/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-commit-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:29:49,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:29:49,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:29:49,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:29:49,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:29:49,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:29:49,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:29:49,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:29:49,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:29:49,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:29:49,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:29:49,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:29:49,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:29:49,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:29:49,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:29:49,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:29:49,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:29:49,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:29:49,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:29:49,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:29:49,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:29:49,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:29:49,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:29:49,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:29:49,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 21:29:49,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 21:29:49,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 21:29:49,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 21:29:49,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 21:29:49,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 21:29:49,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:29:49,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:29:49,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:29:49,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:29:49,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:29:49,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:29:49,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:29:49,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:29:49,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:29:49,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:29:49,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:29:49,279 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 21:29:49,299 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:29:49,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:29:49,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:29:49,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:29:49,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:29:49,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:29:49,300 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:29:49,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:29:49,301 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:29:49,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:29:49,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:29:49,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:29:49,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:29:49,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:29:49,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:29:49,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:29:49,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:29:49,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:29:49,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:29:49,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:29:49,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:29:49,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:29:49,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:29:49,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:29:49,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:29:49,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:29:49,513 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:29:49,513 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:29:49,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-01-27 21:29:50,491 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:29:50,614 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:29:50,615 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-01-27 21:29:50,619 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e11ab7bc9/e7efbf7732e24cbb8a02f5a72ea62930/FLAG072a487b7 [2023-01-27 21:29:50,628 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e11ab7bc9/e7efbf7732e24cbb8a02f5a72ea62930 [2023-01-27 21:29:50,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:29:50,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:29:50,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:29:50,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:29:50,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:29:50,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c9d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50, skipping insertion in model container [2023-01-27 21:29:50,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:29:50,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:29:50,823 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-commit-2.wvr.c[5846,5859] [2023-01-27 21:29:50,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:29:50,838 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:29:50,871 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-commit-2.wvr.c[5846,5859] [2023-01-27 21:29:50,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:29:50,882 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:29:50,883 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:29:50,887 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:29:50,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50 WrapperNode [2023-01-27 21:29:50,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:29:50,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:29:50,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:29:50,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:29:50,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,948 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 474 [2023-01-27 21:29:50,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:29:50,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:29:50,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:29:50,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:29:50,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:50,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:29:50,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:29:50,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:29:50,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:29:50,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (1/1) ... [2023-01-27 21:29:51,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:29:51,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:29:51,027 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 21:29:51,048 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 21:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:29:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:29:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:29:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:29:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:29:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:29:51,059 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 21:29:51,220 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:29:51,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:29:51,572 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:29:51,697 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:29:51,698 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-27 21:29:51,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:29:51 BoogieIcfgContainer [2023-01-27 21:29:51,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:29:51,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:29:51,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:29:51,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:29:51,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:29:50" (1/3) ... [2023-01-27 21:29:51,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db2f52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:29:51, skipping insertion in model container [2023-01-27 21:29:51,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:29:50" (2/3) ... [2023-01-27 21:29:51,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db2f52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:29:51, skipping insertion in model container [2023-01-27 21:29:51,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:29:51" (3/3) ... [2023-01-27 21:29:51,705 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-01-27 21:29:51,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:29:51,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:29:51,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:29:51,782 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 21:29:51,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 321 transitions, 674 flow [2023-01-27 21:29:51,915 INFO L130 PetriNetUnfolder]: 25/317 cut-off events. [2023-01-27 21:29:51,915 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:29:51,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 317 events. 25/317 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 205 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 278. Up to 2 conditions per place. [2023-01-27 21:29:51,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 321 transitions, 674 flow [2023-01-27 21:29:51,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 305 transitions, 634 flow [2023-01-27 21:29:51,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:29:51,942 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 305 transitions, 634 flow [2023-01-27 21:29:51,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 305 transitions, 634 flow [2023-01-27 21:29:51,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 305 transitions, 634 flow [2023-01-27 21:29:52,013 INFO L130 PetriNetUnfolder]: 25/305 cut-off events. [2023-01-27 21:29:52,014 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:29:52,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 305 events. 25/305 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 278. Up to 2 conditions per place. [2023-01-27 21:29:52,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 2928 [2023-01-27 21:30:00,030 INFO L134 LiptonReduction]: Checked pairs total: 6242 [2023-01-27 21:30:00,030 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-01-27 21:30:00,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:30:00,061 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;@27705f54, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:30:00,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 21:30:00,075 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-01-27 21:30:00,075 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:30:00,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:00,077 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] [2023-01-27 21:30:00,077 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 2 more)] === [2023-01-27 21:30:00,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash -349444433, now seen corresponding path program 1 times [2023-01-27 21:30:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:00,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648520437] [2023-01-27 21:30:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:00,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:00,577 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 21:30:00,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648520437] [2023-01-27 21:30:00,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648520437] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:00,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:00,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 21:30:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051515785] [2023-01-27 21:30:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:00,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:30:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:30:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:30:00,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 644 [2023-01-27 21:30:00,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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 21:30:00,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:00,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 644 [2023-01-27 21:30:00,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:00,945 INFO L130 PetriNetUnfolder]: 2346/3110 cut-off events. [2023-01-27 21:30:00,945 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2023-01-27 21:30:00,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6500 conditions, 3110 events. 2346/3110 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11954 event pairs, 381 based on Foata normal form. 1/2317 useless extension candidates. Maximal degree in co-relation 5552. Up to 2810 conditions per place. [2023-01-27 21:30:00,961 INFO L137 encePairwiseOnDemand]: 638/644 looper letters, 58 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2023-01-27 21:30:00,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 301 flow [2023-01-27 21:30:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:30:00,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:30:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2023-01-27 21:30:01,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684265010351967 [2023-01-27 21:30:01,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 905 transitions. [2023-01-27 21:30:01,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 905 transitions. [2023-01-27 21:30:01,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:01,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 905 transitions. [2023-01-27 21:30:01,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 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 21:30:01,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:01,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:01,085 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 106 flow. Second operand 3 states and 905 transitions. [2023-01-27 21:30:01,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 301 flow [2023-01-27 21:30:01,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 271 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:30:01,095 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 123 flow [2023-01-27 21:30:01,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-01-27 21:30:01,098 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-01-27 21:30:01,098 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 123 flow [2023-01-27 21:30:01,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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 21:30:01,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:01,099 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 21:30:01,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:30:01,099 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 2 more)] === [2023-01-27 21:30:01,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1893474723, now seen corresponding path program 1 times [2023-01-27 21:30:01,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:01,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432075821] [2023-01-27 21:30:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:01,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:01,221 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 21:30:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432075821] [2023-01-27 21:30:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432075821] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:30:01,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640985333] [2023-01-27 21:30:01,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:30:01,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:01,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:30:01,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:30:01,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-27 21:30:01,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 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 21:30:01,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:01,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-27 21:30:01,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:01,589 INFO L130 PetriNetUnfolder]: 2646/3592 cut-off events. [2023-01-27 21:30:01,589 INFO L131 PetriNetUnfolder]: For 811/811 co-relation queries the response was YES. [2023-01-27 21:30:01,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 3592 events. 2646/3592 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13439 event pairs, 1817 based on Foata normal form. 166/3568 useless extension candidates. Maximal degree in co-relation 3795. Up to 3111 conditions per place. [2023-01-27 21:30:01,600 INFO L137 encePairwiseOnDemand]: 637/644 looper letters, 44 selfloop transitions, 2 changer transitions 30/76 dead transitions. [2023-01-27 21:30:01,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 76 transitions, 355 flow [2023-01-27 21:30:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:30:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:30:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1018 transitions. [2023-01-27 21:30:01,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951863354037267 [2023-01-27 21:30:01,603 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1018 transitions. [2023-01-27 21:30:01,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1018 transitions. [2023-01-27 21:30:01,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:01,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1018 transitions. [2023-01-27 21:30:01,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 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 21:30:01,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:01,609 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:01,609 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 123 flow. Second operand 4 states and 1018 transitions. [2023-01-27 21:30:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 76 transitions, 355 flow [2023-01-27 21:30:01,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 76 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:30:01,610 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 140 flow [2023-01-27 21:30:01,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-01-27 21:30:01,611 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2023-01-27 21:30:01,611 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 140 flow [2023-01-27 21:30:01,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 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 21:30:01,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:01,612 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] [2023-01-27 21:30:01,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:30:01,612 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 2 more)] === [2023-01-27 21:30:01,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1954963629, now seen corresponding path program 1 times [2023-01-27 21:30:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:01,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913195760] [2023-01-27 21:30:01,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:01,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:01,726 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 21:30:01,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:01,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913195760] [2023-01-27 21:30:01,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913195760] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:01,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:01,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:30:01,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926687391] [2023-01-27 21:30:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:01,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:30:01,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:01,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:30:01,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:30:01,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-27 21:30:01,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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 21:30:01,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:01,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-27 21:30:01,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:02,123 INFO L130 PetriNetUnfolder]: 2852/3829 cut-off events. [2023-01-27 21:30:02,124 INFO L131 PetriNetUnfolder]: For 1529/1529 co-relation queries the response was YES. [2023-01-27 21:30:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9573 conditions, 3829 events. 2852/3829 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14402 event pairs, 765 based on Foata normal form. 140/3965 useless extension candidates. Maximal degree in co-relation 9559. Up to 2698 conditions per place. [2023-01-27 21:30:02,138 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-01-27 21:30:02,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 347 flow [2023-01-27 21:30:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:30:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:30:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 904 transitions. [2023-01-27 21:30:02,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46790890269151136 [2023-01-27 21:30:02,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 904 transitions. [2023-01-27 21:30:02,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 904 transitions. [2023-01-27 21:30:02,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:02,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 904 transitions. [2023-01-27 21:30:02,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 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 21:30:02,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:02,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:02,145 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 140 flow. Second operand 3 states and 904 transitions. [2023-01-27 21:30:02,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 347 flow [2023-01-27 21:30:02,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 343 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:30:02,150 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 144 flow [2023-01-27 21:30:02,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-01-27 21:30:02,151 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-01-27 21:30:02,153 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 144 flow [2023-01-27 21:30:02,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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 21:30:02,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:02,154 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] [2023-01-27 21:30:02,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:30:02,154 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 2 more)] === [2023-01-27 21:30:02,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -418605730, now seen corresponding path program 1 times [2023-01-27 21:30:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214561583] [2023-01-27 21:30:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:02,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:02,351 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 21:30:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214561583] [2023-01-27 21:30:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214561583] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:02,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:30:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463993359] [2023-01-27 21:30:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:02,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:30:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:30:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:30:02,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 644 [2023-01-27 21:30:02,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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 21:30:02,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:02,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 644 [2023-01-27 21:30:02,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:02,656 INFO L130 PetriNetUnfolder]: 2676/3627 cut-off events. [2023-01-27 21:30:02,656 INFO L131 PetriNetUnfolder]: For 1635/1635 co-relation queries the response was YES. [2023-01-27 21:30:02,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 3627 events. 2676/3627 cut-off events. For 1635/1635 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13554 event pairs, 689 based on Foata normal form. 132/3755 useless extension candidates. Maximal degree in co-relation 9313. Up to 2700 conditions per place. [2023-01-27 21:30:02,669 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-01-27 21:30:02,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 353 flow [2023-01-27 21:30:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:30:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:30:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2023-01-27 21:30:02,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2023-01-27 21:30:02,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2023-01-27 21:30:02,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2023-01-27 21:30:02,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:02,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2023-01-27 21:30:02,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 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 21:30:02,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:02,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:02,681 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 144 flow. Second operand 3 states and 896 transitions. [2023-01-27 21:30:02,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 353 flow [2023-01-27 21:30:02,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:30:02,685 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 150 flow [2023-01-27 21:30:02,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-01-27 21:30:02,686 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-01-27 21:30:02,686 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 150 flow [2023-01-27 21:30:02,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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 21:30:02,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:02,687 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] [2023-01-27 21:30:02,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:30:02,687 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 2 more)] === [2023-01-27 21:30:02,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -354281914, now seen corresponding path program 1 times [2023-01-27 21:30:02,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:02,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095671871] [2023-01-27 21:30:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:02,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:02,850 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 21:30:02,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:02,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095671871] [2023-01-27 21:30:02,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095671871] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:02,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:02,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:30:02,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614885259] [2023-01-27 21:30:02,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:02,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:30:02,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:02,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:30:02,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:30:02,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 644 [2023-01-27 21:30:02,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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 21:30:02,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:02,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 644 [2023-01-27 21:30:02,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:03,224 INFO L130 PetriNetUnfolder]: 3151/4250 cut-off events. [2023-01-27 21:30:03,224 INFO L131 PetriNetUnfolder]: For 2502/2502 co-relation queries the response was YES. [2023-01-27 21:30:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 4250 events. 3151/4250 cut-off events. For 2502/2502 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15712 event pairs, 896 based on Foata normal form. 104/4350 useless extension candidates. Maximal degree in co-relation 11289. Up to 2724 conditions per place. [2023-01-27 21:30:03,240 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 61 selfloop transitions, 2 changer transitions 8/71 dead transitions. [2023-01-27 21:30:03,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 361 flow [2023-01-27 21:30:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:30:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:30:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 899 transitions. [2023-01-27 21:30:03,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46532091097308487 [2023-01-27 21:30:03,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 899 transitions. [2023-01-27 21:30:03,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 899 transitions. [2023-01-27 21:30:03,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:03,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 899 transitions. [2023-01-27 21:30:03,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 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 21:30:03,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:03,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:03,247 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 150 flow. Second operand 3 states and 899 transitions. [2023-01-27 21:30:03,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 361 flow [2023-01-27 21:30:03,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:30:03,249 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 156 flow [2023-01-27 21:30:03,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-01-27 21:30:03,250 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-01-27 21:30:03,250 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 156 flow [2023-01-27 21:30:03,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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 21:30:03,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:03,251 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] [2023-01-27 21:30:03,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:30:03,251 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 2 more)] === [2023-01-27 21:30:03,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -556616439, now seen corresponding path program 1 times [2023-01-27 21:30:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098616895] [2023-01-27 21:30:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:03,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:03,372 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 21:30:03,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098616895] [2023-01-27 21:30:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098616895] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:03,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:30:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612965864] [2023-01-27 21:30:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:03,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:30:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:30:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:30:03,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-27 21:30:03,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 21:30:03,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:03,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-27 21:30:03,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:03,886 INFO L130 PetriNetUnfolder]: 4217/5773 cut-off events. [2023-01-27 21:30:03,886 INFO L131 PetriNetUnfolder]: For 3607/3607 co-relation queries the response was YES. [2023-01-27 21:30:03,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15544 conditions, 5773 events. 4217/5773 cut-off events. For 3607/3607 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 23145 event pairs, 3251 based on Foata normal form. 80/5846 useless extension candidates. Maximal degree in co-relation 15520. Up to 4248 conditions per place. [2023-01-27 21:30:03,902 INFO L137 encePairwiseOnDemand]: 639/644 looper letters, 44 selfloop transitions, 3 changer transitions 34/81 dead transitions. [2023-01-27 21:30:03,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 418 flow [2023-01-27 21:30:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:30:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:30:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2023-01-27 21:30:03,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963509316770186 [2023-01-27 21:30:03,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2023-01-27 21:30:03,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2023-01-27 21:30:03,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:03,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2023-01-27 21:30:03,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 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 21:30:03,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:03,909 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:03,910 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 156 flow. Second operand 4 states and 1021 transitions. [2023-01-27 21:30:03,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 418 flow [2023-01-27 21:30:03,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:30:03,933 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 172 flow [2023-01-27 21:30:03,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-01-27 21:30:03,933 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2023-01-27 21:30:03,934 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 172 flow [2023-01-27 21:30:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 21:30:03,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:03,934 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 21:30:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:30:03,934 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 2 more)] === [2023-01-27 21:30:03,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2129506320, now seen corresponding path program 1 times [2023-01-27 21:30:03,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:03,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669617434] [2023-01-27 21:30:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:03,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:30:04,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:04,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669617434] [2023-01-27 21:30:04,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669617434] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:04,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:04,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:30:04,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154713483] [2023-01-27 21:30:04,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:04,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:30:04,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:30:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:30:04,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-27 21:30:04,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 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 21:30:04,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:04,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-27 21:30:04,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:04,535 INFO L130 PetriNetUnfolder]: 3401/4661 cut-off events. [2023-01-27 21:30:04,535 INFO L131 PetriNetUnfolder]: For 3070/3070 co-relation queries the response was YES. [2023-01-27 21:30:04,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12616 conditions, 4661 events. 3401/4661 cut-off events. For 3070/3070 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 18054 event pairs, 2604 based on Foata normal form. 38/4694 useless extension candidates. Maximal degree in co-relation 12587. Up to 4246 conditions per place. [2023-01-27 21:30:04,548 INFO L137 encePairwiseOnDemand]: 639/644 looper letters, 45 selfloop transitions, 3 changer transitions 24/72 dead transitions. [2023-01-27 21:30:04,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 380 flow [2023-01-27 21:30:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:30:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:30:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1011 transitions. [2023-01-27 21:30:04,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924689440993789 [2023-01-27 21:30:04,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1011 transitions. [2023-01-27 21:30:04,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1011 transitions. [2023-01-27 21:30:04,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:04,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1011 transitions. [2023-01-27 21:30:04,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 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 21:30:04,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:04,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:04,556 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 172 flow. Second operand 4 states and 1011 transitions. [2023-01-27 21:30:04,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 380 flow [2023-01-27 21:30:04,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 370 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 21:30:04,560 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 180 flow [2023-01-27 21:30:04,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-01-27 21:30:04,561 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-01-27 21:30:04,561 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 180 flow [2023-01-27 21:30:04,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 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 21:30:04,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:04,564 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 21:30:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 21:30:04,564 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 2 more)] === [2023-01-27 21:30:04,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1842908479, now seen corresponding path program 1 times [2023-01-27 21:30:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774448311] [2023-01-27 21:30:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:30:04,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774448311] [2023-01-27 21:30:04,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774448311] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:04,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:04,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:30:04,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252683741] [2023-01-27 21:30:04,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:04,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:30:04,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:30:04,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:30:04,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-27 21:30:04,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 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 21:30:04,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:04,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-27 21:30:04,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:05,110 INFO L130 PetriNetUnfolder]: 3522/4838 cut-off events. [2023-01-27 21:30:05,111 INFO L131 PetriNetUnfolder]: For 3203/3203 co-relation queries the response was YES. [2023-01-27 21:30:05,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13084 conditions, 4838 events. 3522/4838 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 18911 event pairs, 2708 based on Foata normal form. 56/4891 useless extension candidates. Maximal degree in co-relation 13055. Up to 4244 conditions per place. [2023-01-27 21:30:05,127 INFO L137 encePairwiseOnDemand]: 634/644 looper letters, 41 selfloop transitions, 8 changer transitions 25/74 dead transitions. [2023-01-27 21:30:05,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 404 flow [2023-01-27 21:30:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:30:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:30:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1251 transitions. [2023-01-27 21:30:05,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38850931677018635 [2023-01-27 21:30:05,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1251 transitions. [2023-01-27 21:30:05,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1251 transitions. [2023-01-27 21:30:05,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:05,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1251 transitions. [2023-01-27 21:30:05,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.2) internal successors, (1251), 5 states have internal predecessors, (1251), 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 21:30:05,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 644.0) internal successors, (3864), 6 states have internal predecessors, (3864), 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 21:30:05,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 644.0) internal successors, (3864), 6 states have internal predecessors, (3864), 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 21:30:05,136 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 180 flow. Second operand 5 states and 1251 transitions. [2023-01-27 21:30:05,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 404 flow [2023-01-27 21:30:05,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 392 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 21:30:05,140 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 202 flow [2023-01-27 21:30:05,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-01-27 21:30:05,142 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-01-27 21:30:05,142 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 202 flow [2023-01-27 21:30:05,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 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 21:30:05,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:05,143 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 21:30:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 21:30:05,143 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 2 more)] === [2023-01-27 21:30:05,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1999596867, now seen corresponding path program 1 times [2023-01-27 21:30:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:05,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125374158] [2023-01-27 21:30:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:05,298 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 21:30:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125374158] [2023-01-27 21:30:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125374158] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:05,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:05,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:30:05,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728601220] [2023-01-27 21:30:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:05,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:30:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:30:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:30:05,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-27 21:30:05,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 21:30:05,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:05,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-27 21:30:05,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:05,554 INFO L130 PetriNetUnfolder]: 1883/2543 cut-off events. [2023-01-27 21:30:05,554 INFO L131 PetriNetUnfolder]: For 1868/1868 co-relation queries the response was YES. [2023-01-27 21:30:05,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6966 conditions, 2543 events. 1883/2543 cut-off events. For 1868/1868 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8435 event pairs, 709 based on Foata normal form. 30/2572 useless extension candidates. Maximal degree in co-relation 6933. Up to 2325 conditions per place. [2023-01-27 21:30:05,562 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 51 selfloop transitions, 2 changer transitions 9/62 dead transitions. [2023-01-27 21:30:05,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 358 flow [2023-01-27 21:30:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:30:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:30:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-01-27 21:30:05,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616977225672878 [2023-01-27 21:30:05,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-01-27 21:30:05,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-01-27 21:30:05,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:05,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-01-27 21:30:05,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 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 21:30:05,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:05,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 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 21:30:05,568 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 202 flow. Second operand 3 states and 892 transitions. [2023-01-27 21:30:05,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 358 flow [2023-01-27 21:30:05,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 340 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 21:30:05,571 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 198 flow [2023-01-27 21:30:05,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-01-27 21:30:05,571 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-01-27 21:30:05,571 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 198 flow [2023-01-27 21:30:05,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 21:30:05,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:05,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:30:05,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:30:05,572 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 2 more)] === [2023-01-27 21:30:05,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash -852059088, now seen corresponding path program 1 times [2023-01-27 21:30:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:05,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960006660] [2023-01-27 21:30:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:05,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:30:05,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:05,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960006660] [2023-01-27 21:30:05,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960006660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:05,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:05,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:30:05,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141650705] [2023-01-27 21:30:05,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:05,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:30:05,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:30:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:30:05,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-27 21:30:05,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 288.25) internal successors, (1153), 4 states have internal predecessors, (1153), 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 21:30:05,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:05,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-27 21:30:05,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:06,407 INFO L130 PetriNetUnfolder]: 5057/6765 cut-off events. [2023-01-27 21:30:06,407 INFO L131 PetriNetUnfolder]: For 5355/5355 co-relation queries the response was YES. [2023-01-27 21:30:06,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19325 conditions, 6765 events. 5057/6765 cut-off events. For 5355/5355 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26305 event pairs, 1639 based on Foata normal form. 198/6962 useless extension candidates. Maximal degree in co-relation 19294. Up to 2697 conditions per place. [2023-01-27 21:30:06,432 INFO L137 encePairwiseOnDemand]: 637/644 looper letters, 89 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2023-01-27 21:30:06,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 578 flow [2023-01-27 21:30:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:30:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:30:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1207 transitions. [2023-01-27 21:30:06,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468555900621118 [2023-01-27 21:30:06,435 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1207 transitions. [2023-01-27 21:30:06,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1207 transitions. [2023-01-27 21:30:06,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:06,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1207 transitions. [2023-01-27 21:30:06,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 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 21:30:06,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:06,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:06,452 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 198 flow. Second operand 4 states and 1207 transitions. [2023-01-27 21:30:06,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 578 flow [2023-01-27 21:30:06,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 101 transitions, 574 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:30:06,456 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 294 flow [2023-01-27 21:30:06,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-01-27 21:30:06,457 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2023-01-27 21:30:06,457 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 294 flow [2023-01-27 21:30:06,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.25) internal successors, (1153), 4 states have internal predecessors, (1153), 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 21:30:06,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:06,458 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:30:06,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 21:30:06,458 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 2 more)] === [2023-01-27 21:30:06,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 335744450, now seen corresponding path program 1 times [2023-01-27 21:30:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445105274] [2023-01-27 21:30:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:30:06,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445105274] [2023-01-27 21:30:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445105274] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:30:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446019534] [2023-01-27 21:30:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:06,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:30:06,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:30:06,709 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 21:30:06,712 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 21:30:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:06,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 21:30:06,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:30:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:30:07,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:30:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:30:07,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446019534] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:30:07,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:30:07,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-27 21:30:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48915232] [2023-01-27 21:30:07,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:30:07,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 21:30:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 21:30:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-27 21:30:07,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 644 [2023-01-27 21:30:07,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 239.33333333333334) internal successors, (2872), 12 states have internal predecessors, (2872), 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 21:30:07,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:07,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 644 [2023-01-27 21:30:07,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:07,850 INFO L130 PetriNetUnfolder]: 5288/7161 cut-off events. [2023-01-27 21:30:07,850 INFO L131 PetriNetUnfolder]: For 10275/10275 co-relation queries the response was YES. [2023-01-27 21:30:07,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23568 conditions, 7161 events. 5288/7161 cut-off events. For 10275/10275 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28333 event pairs, 3732 based on Foata normal form. 16/7175 useless extension candidates. Maximal degree in co-relation 22532. Up to 6765 conditions per place. [2023-01-27 21:30:07,872 INFO L137 encePairwiseOnDemand]: 638/644 looper letters, 57 selfloop transitions, 3 changer transitions 45/105 dead transitions. [2023-01-27 21:30:07,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 662 flow [2023-01-27 21:30:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:30:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:30:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1491 transitions. [2023-01-27 21:30:07,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3858695652173913 [2023-01-27 21:30:07,875 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1491 transitions. [2023-01-27 21:30:07,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1491 transitions. [2023-01-27 21:30:07,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:07,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1491 transitions. [2023-01-27 21:30:07,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 21:30:07,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 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 21:30:07,882 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 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 21:30:07,882 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 294 flow. Second operand 6 states and 1491 transitions. [2023-01-27 21:30:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 662 flow [2023-01-27 21:30:07,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 636 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-01-27 21:30:07,890 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 294 flow [2023-01-27 21:30:07,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2023-01-27 21:30:07,891 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-01-27 21:30:07,891 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 294 flow [2023-01-27 21:30:07,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 239.33333333333334) internal successors, (2872), 12 states have internal predecessors, (2872), 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 21:30:07,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:07,892 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:30:07,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 21:30:08,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-27 21:30:08,098 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 2 more)] === [2023-01-27 21:30:08,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash -493373472, now seen corresponding path program 2 times [2023-01-27 21:30:08,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:08,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965531347] [2023-01-27 21:30:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:08,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:30:08,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:08,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965531347] [2023-01-27 21:30:08,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965531347] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:30:08,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18297879] [2023-01-27 21:30:08,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:30:08,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:30:08,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:30:08,334 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 21:30:08,336 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 21:30:08,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:30:08,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:30:08,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 21:30:08,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:30:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:30:08,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:30:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:30:08,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18297879] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:30:08,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:30:08,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 21:30:08,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896364159] [2023-01-27 21:30:08,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:30:08,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 21:30:08,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:08,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 21:30:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-01-27 21:30:08,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 644 [2023-01-27 21:30:08,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 237.88888888888889) internal successors, (4282), 18 states have internal predecessors, (4282), 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 21:30:08,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:08,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 644 [2023-01-27 21:30:08,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:09,812 INFO L130 PetriNetUnfolder]: 5372/7294 cut-off events. [2023-01-27 21:30:09,812 INFO L131 PetriNetUnfolder]: For 8521/8521 co-relation queries the response was YES. [2023-01-27 21:30:09,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23031 conditions, 7294 events. 5372/7294 cut-off events. For 8521/8521 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28948 event pairs, 3740 based on Foata normal form. 28/7320 useless extension candidates. Maximal degree in co-relation 22993. Up to 6765 conditions per place. [2023-01-27 21:30:09,843 INFO L137 encePairwiseOnDemand]: 638/644 looper letters, 57 selfloop transitions, 4 changer transitions 54/115 dead transitions. [2023-01-27 21:30:09,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 115 transitions, 728 flow [2023-01-27 21:30:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:30:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:30:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1969 transitions. [2023-01-27 21:30:09,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38218167701863354 [2023-01-27 21:30:09,847 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1969 transitions. [2023-01-27 21:30:09,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1969 transitions. [2023-01-27 21:30:09,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:09,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1969 transitions. [2023-01-27 21:30:09,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 246.125) internal successors, (1969), 8 states have internal predecessors, (1969), 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 21:30:09,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 644.0) internal successors, (5796), 9 states have internal predecessors, (5796), 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 21:30:09,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 644.0) internal successors, (5796), 9 states have internal predecessors, (5796), 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 21:30:09,856 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 294 flow. Second operand 8 states and 1969 transitions. [2023-01-27 21:30:09,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 115 transitions, 728 flow [2023-01-27 21:30:09,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 708 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-27 21:30:09,863 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 314 flow [2023-01-27 21:30:09,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-01-27 21:30:09,864 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2023-01-27 21:30:09,864 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 314 flow [2023-01-27 21:30:09,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 237.88888888888889) internal successors, (4282), 18 states have internal predecessors, (4282), 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 21:30:09,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:09,865 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:30:09,887 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 21:30:10,089 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,SelfDestructingSolverStorable11 [2023-01-27 21:30:10,090 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:30:10,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2111651186, now seen corresponding path program 3 times [2023-01-27 21:30:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:10,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456226987] [2023-01-27 21:30:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:10,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-27 21:30:10,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456226987] [2023-01-27 21:30:10,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456226987] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:30:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989888429] [2023-01-27 21:30:10,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:30:10,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:30:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:30:10,568 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 21:30:10,610 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 21:30:10,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 21:30:10,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:30:10,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 21:30:10,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:30:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-27 21:30:10,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:30:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-27 21:30:10,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989888429] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:30:10,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:30:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-01-27 21:30:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607602503] [2023-01-27 21:30:10,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:30:10,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 21:30:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 21:30:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-27 21:30:10,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 644 [2023-01-27 21:30:10,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 314 flow. Second operand has 12 states, 12 states have (on average 235.5) internal successors, (2826), 12 states have internal predecessors, (2826), 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 21:30:10,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:10,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 644 [2023-01-27 21:30:10,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:13,257 INFO L130 PetriNetUnfolder]: 18348/25227 cut-off events. [2023-01-27 21:30:13,257 INFO L131 PetriNetUnfolder]: For 40134/40134 co-relation queries the response was YES. [2023-01-27 21:30:13,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82252 conditions, 25227 events. 18348/25227 cut-off events. For 40134/40134 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 126503 event pairs, 6024 based on Foata normal form. 1976/27199 useless extension candidates. Maximal degree in co-relation 82207. Up to 6441 conditions per place. [2023-01-27 21:30:13,400 INFO L137 encePairwiseOnDemand]: 634/644 looper letters, 139 selfloop transitions, 14 changer transitions 161/314 dead transitions. [2023-01-27 21:30:13,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 314 transitions, 2022 flow [2023-01-27 21:30:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 21:30:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 21:30:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5063 transitions. [2023-01-27 21:30:13,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.374371487725525 [2023-01-27 21:30:13,412 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5063 transitions. [2023-01-27 21:30:13,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5063 transitions. [2023-01-27 21:30:13,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:13,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5063 transitions. [2023-01-27 21:30:13,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 241.0952380952381) internal successors, (5063), 21 states have internal predecessors, (5063), 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 21:30:13,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 644.0) internal successors, (14168), 22 states have internal predecessors, (14168), 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 21:30:13,430 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 644.0) internal successors, (14168), 22 states have internal predecessors, (14168), 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 21:30:13,430 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 314 flow. Second operand 21 states and 5063 transitions. [2023-01-27 21:30:13,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 314 transitions, 2022 flow [2023-01-27 21:30:13,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 314 transitions, 1930 flow, removed 43 selfloop flow, removed 6 redundant places. [2023-01-27 21:30:13,454 INFO L231 Difference]: Finished difference. Result has 95 places, 67 transitions, 383 flow [2023-01-27 21:30:13,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=383, PETRI_PLACES=95, PETRI_TRANSITIONS=67} [2023-01-27 21:30:13,455 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2023-01-27 21:30:13,455 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 67 transitions, 383 flow [2023-01-27 21:30:13,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 235.5) internal successors, (2826), 12 states have internal predecessors, (2826), 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 21:30:13,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:13,456 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:30:13,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 21:30:13,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:30:13,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:30:13,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:13,664 INFO L85 PathProgramCache]: Analyzing trace with hash -990366533, now seen corresponding path program 1 times [2023-01-27 21:30:13,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:13,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288950256] [2023-01-27 21:30:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-27 21:30:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:13,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288950256] [2023-01-27 21:30:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288950256] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:30:13,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:30:13,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:30:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797102676] [2023-01-27 21:30:13,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:30:13,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:30:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:30:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:30:13,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-27 21:30:13,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 67 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 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 21:30:13,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:13,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-27 21:30:13,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:18,869 INFO L130 PetriNetUnfolder]: 37552/50260 cut-off events. [2023-01-27 21:30:18,870 INFO L131 PetriNetUnfolder]: For 133074/133074 co-relation queries the response was YES. [2023-01-27 21:30:19,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179980 conditions, 50260 events. 37552/50260 cut-off events. For 133074/133074 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 246066 event pairs, 12155 based on Foata normal form. 1340/51598 useless extension candidates. Maximal degree in co-relation 179921. Up to 17334 conditions per place. [2023-01-27 21:30:19,159 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 134 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2023-01-27 21:30:19,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 1045 flow [2023-01-27 21:30:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:30:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:30:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1207 transitions. [2023-01-27 21:30:19,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468555900621118 [2023-01-27 21:30:19,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1207 transitions. [2023-01-27 21:30:19,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1207 transitions. [2023-01-27 21:30:19,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:19,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1207 transitions. [2023-01-27 21:30:19,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 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 21:30:19,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:19,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 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 21:30:19,166 INFO L175 Difference]: Start difference. First operand has 95 places, 67 transitions, 383 flow. Second operand 4 states and 1207 transitions. [2023-01-27 21:30:19,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 1045 flow [2023-01-27 21:30:19,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 139 transitions, 994 flow, removed 19 selfloop flow, removed 9 redundant places. [2023-01-27 21:30:19,280 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 386 flow [2023-01-27 21:30:19,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2023-01-27 21:30:19,280 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2023-01-27 21:30:19,280 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 386 flow [2023-01-27 21:30:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 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 21:30:19,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:19,281 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:30:19,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 21:30:19,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:30:19,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -156124942, now seen corresponding path program 1 times [2023-01-27 21:30:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:19,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568157746] [2023-01-27 21:30:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:19,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:30:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568157746] [2023-01-27 21:30:25,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568157746] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:30:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388194480] [2023-01-27 21:30:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:25,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:30:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:30:25,393 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 21:30:25,394 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 21:30:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:25,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 133 conjunts are in the unsatisfiable core [2023-01-27 21:30:25,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:30:26,269 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 15 treesize of output 11 [2023-01-27 21:30:26,375 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 21:30:26,493 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 21:30:26,602 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 21:30:26,702 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 21:30:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:30:28,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:30:38,975 WARN L222 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:31:05,347 WARN L222 SmtUtils]: Spent 26.13s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:31:55,715 WARN L222 SmtUtils]: Spent 50.17s on a formula simplification. DAG size of input: 65 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:32:19,974 WARN L222 SmtUtils]: Spent 24.13s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:32:42,740 WARN L222 SmtUtils]: Spent 22.59s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:33:45,274 WARN L222 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 88 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:34:39,657 WARN L222 SmtUtils]: Spent 54.16s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:37:00,786 WARN L222 SmtUtils]: Spent 2.31m on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:37:47,386 WARN L222 SmtUtils]: Spent 46.13s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:38:03,256 WARN L222 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 131 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:38:03,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:38:03,395 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 276 treesize of output 192 [2023-01-27 21:38:03,685 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:38:03,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 6961241 treesize of output 6694659 [2023-01-27 21:38:10,506 WARN L222 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 3537 DAG size of output: 828 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 21:38:10,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:38:10,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 20027 treesize of output 19619 [2023-01-27 21:38:10,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:38:10,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 19421 treesize of output 14771 [2023-01-27 21:38:11,394 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:38:11,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 14573 treesize of output 13559 [2023-01-27 21:38:11,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:38:11,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 13361 treesize of output 11135 Received shutdown request... [2023-01-27 21:44:10,133 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 21:44:10,133 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 21:44:10,140 WARN L238 SmtUtils]: Removed 1 from assertion stack [2023-01-27 21:44:10,142 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 21:44:10,153 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 21:44:10,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 21:44:10,348 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-4-9-7-9-5-8-4-6-4-9-4-4-3-3-4-4-4-2-2-3-2-2-2-3-2-2-2-1 context. [2023-01-27 21:44:10,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-27 21:44:10,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 21:44:10,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 21:44:10,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-27 21:44:10,350 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:44:10,353 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:44:10,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:44:10,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:44:10 BasicIcfg [2023-01-27 21:44:10,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:44:10,355 INFO L158 Benchmark]: Toolchain (without parser) took 859724.44ms. Allocated memory was 413.1MB in the beginning and 6.5GB in the end (delta: 6.1GB). Free memory was 347.3MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-01-27 21:44:10,355 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 413.1MB. Free memory is still 359.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:44:10,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.87ms. Allocated memory is still 413.1MB. Free memory was 347.0MB in the beginning and 333.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 21:44:10,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.77ms. Allocated memory is still 413.1MB. Free memory was 333.7MB in the beginning and 330.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 21:44:10,355 INFO L158 Benchmark]: Boogie Preprocessor took 47.44ms. Allocated memory is still 413.1MB. Free memory was 330.2MB in the beginning and 327.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:44:10,355 INFO L158 Benchmark]: RCFGBuilder took 702.82ms. Allocated memory was 413.1MB in the beginning and 805.3MB in the end (delta: 392.2MB). Free memory was 327.6MB in the beginning and 698.2MB in the end (delta: -370.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.0GB. [2023-01-27 21:44:10,356 INFO L158 Benchmark]: TraceAbstraction took 858653.22ms. Allocated memory was 805.3MB in the beginning and 6.5GB in the end (delta: 5.7GB). Free memory was 698.2MB in the beginning and 2.7GB in the end (delta: -2.0GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-01-27 21:44:10,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 413.1MB. Free memory is still 359.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 255.87ms. Allocated memory is still 413.1MB. Free memory was 347.0MB in the beginning and 333.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.77ms. Allocated memory is still 413.1MB. Free memory was 333.7MB in the beginning and 330.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.44ms. Allocated memory is still 413.1MB. Free memory was 330.2MB in the beginning and 327.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 702.82ms. Allocated memory was 413.1MB in the beginning and 805.3MB in the end (delta: 392.2MB). Free memory was 327.6MB in the beginning and 698.2MB in the end (delta: -370.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.0GB. * TraceAbstraction took 858653.22ms. Allocated memory was 805.3MB in the beginning and 6.5GB in the end (delta: 5.7GB). Free memory was 698.2MB in the beginning and 2.7GB in the end (delta: -2.0GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 293 PlacesBefore, 46 PlacesAfterwards, 305 TransitionsBefore, 41 TransitionsAfterwards, 2928 CoEnabledTransitionPairs, 7 FixpointIterations, 206 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 47 TrivialYvCompositions, 15 ConcurrentYvCompositions, 17 ChoiceCompositions, 323 TotalNumberOfCompositions, 6242 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3905, independent: 3762, independent conditional: 0, independent unconditional: 3762, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1737, independent: 1688, independent conditional: 0, independent unconditional: 1688, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3905, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 1737, unknown conditional: 0, unknown unconditional: 1737] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 135, Positive conditional cache size: 0, Positive unconditional cache size: 135, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-4-9-7-9-5-8-4-6-4-9-4-4-3-3-4-4-4-2-2-3-2-2-2-3-2-2-2-1 context. - TimeoutResultAtElement [Line: 177]: 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 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-4-9-7-9-5-8-4-6-4-9-4-4-3-3-4-4-4-2-2-3-2-2-2-3-2-2-2-1 context. - TimeoutResultAtElement [Line: 178]: 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 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-4-9-7-9-5-8-4-6-4-9-4-4-3-3-4-4-4-2-2-3-2-2-2-3-2-2-2-1 context. - TimeoutResultAtElement [Line: 179]: 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 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-4-9-7-9-5-8-4-6-4-9-4-4-3-3-4-4-4-2-2-3-2-2-2-3-2-2-2-1 context. - TimeoutResultAtElement [Line: 176]: 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 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-4-9-7-9-5-8-4-6-4-9-4-4-3-3-4-4-4-2-2-3-2-2-2-3-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 341 locations, 5 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: 858.5s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 560 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 560 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2353 IncrementalHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 0 mSDtfsCounter, 2353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=14, InterpolantAutomatonStates: 75, 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, 1.0s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 603 NumberOfCodeBlocks, 591 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 2087 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1534 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 20 InterpolantComputations, 11 PerfectInterpolantSequences, 135/155 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