/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:55:37,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:55:37,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:55:37,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 11:55:37,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 11:55:37,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 11:55:37,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 11:55:37,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 11:55:37,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 11:55:37,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 11:55:37,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 11:55:37,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 11:55:37,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:55:37,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:55:37,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:55:37,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:55:37,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:55:37,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:55:37,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:55:37,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:55:37,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:55:37,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:55:37,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:55:37,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:55:37,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 11:55:37,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 11:55:37,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 11:55:37,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 11:55:37,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 11:55:37,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 11:55:37,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 11:55:37,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 11:55:37,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 11:55:37,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 11:55:37,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 11:55:37,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 11:55:37,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 11:55:37,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 11:55:37,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:55:37,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:55:37,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:55:37,650 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 [2023-01-28 11:55:37,670 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:55:37,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:55:37,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:55:37,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:55:37,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:55:37,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:55:37,672 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:55:37,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:55:37,672 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:55:37,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:55:37,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:55:37,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:55:37,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:55:37,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:55:37,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:55:37,673 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:55:37,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:55:37,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:55:37,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:55:37,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:55:37,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:55:37,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:55:37,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:55:37,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:55:37,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:55:37,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:55:37,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:55:37,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:55:37,847 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:55:37,847 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:55:37,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-01-28 11:55:38,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:55:38,898 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:55:38,898 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-01-28 11:55:38,902 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def9c8ffb/dc962e6a662849a8acc9acba64fd19d2/FLAG2d6391d3f [2023-01-28 11:55:38,912 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def9c8ffb/dc962e6a662849a8acc9acba64fd19d2 [2023-01-28 11:55:38,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:55:38,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:55:38,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:55:38,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:55:38,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:55:38,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:55:38" (1/1) ... [2023-01-28 11:55:38,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f807e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:38, skipping insertion in model container [2023-01-28 11:55:38,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:55:38" (1/1) ... [2023-01-28 11:55:38,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:55:38,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:55:39,078 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/test-easy10.wvr.c[3907,3920] [2023-01-28 11:55:39,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:55:39,093 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:55:39,124 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/test-easy10.wvr.c[3907,3920] [2023-01-28 11:55:39,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:55:39,134 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:55:39,135 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:55:39,139 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:55:39,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39 WrapperNode [2023-01-28 11:55:39,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:55:39,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:55:39,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:55:39,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:55:39,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,184 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-01-28 11:55:39,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:55:39,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:55:39,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:55:39,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:55:39,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:55:39,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:55:39,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:55:39,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:55:39,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (1/1) ... [2023-01-28 11:55:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:55:39,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:55:39,244 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) [2023-01-28 11:55:39,246 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 [2023-01-28 11:55:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:55:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:55:39,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:55:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:55:39,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:55:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:55:39,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:55:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 11:55:39,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 11:55:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:55:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:55:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:55:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 11:55:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 11:55:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:55:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:55:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:55:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:55:39,278 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 11:55:39,390 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:55:39,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:55:39,614 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:55:39,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:55:39,667 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 11:55:39,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:55:39 BoogieIcfgContainer [2023-01-28 11:55:39,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:55:39,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:55:39,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:55:39,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:55:39,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:55:38" (1/3) ... [2023-01-28 11:55:39,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cef559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:55:39, skipping insertion in model container [2023-01-28 11:55:39,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:55:39" (2/3) ... [2023-01-28 11:55:39,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cef559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:55:39, skipping insertion in model container [2023-01-28 11:55:39,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:55:39" (3/3) ... [2023-01-28 11:55:39,678 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-01-28 11:55:39,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:55:39,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:55:39,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:55:39,795 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 11:55:39,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2023-01-28 11:55:39,894 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2023-01-28 11:55:39,895 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:55:39,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-28 11:55:39,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2023-01-28 11:55:39,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2023-01-28 11:55:39,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:55:39,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2023-01-28 11:55:39,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2023-01-28 11:55:39,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2023-01-28 11:55:39,958 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2023-01-28 11:55:39,959 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:55:39,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-28 11:55:39,961 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 11:55:42,942 INFO L134 LiptonReduction]: Checked pairs total: 11399 [2023-01-28 11:55:42,942 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-01-28 11:55:42,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:55:42,955 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;@6e6658f9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:55:42,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 11:55:42,961 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2023-01-28 11:55:42,961 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:55:42,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:42,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:42,962 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)] === [2023-01-28 11:55:42,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:42,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2048807285, now seen corresponding path program 1 times [2023-01-28 11:55:42,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:42,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759435895] [2023-01-28 11:55:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:42,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:55:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:55:43,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:55:43,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759435895] [2023-01-28 11:55:43,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759435895] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:55:43,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:55:43,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:55:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969836789] [2023-01-28 11:55:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:55:43,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:55:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:55:43,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:55:43,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:55:43,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 11:55:43,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:43,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:55:43,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 11:55:43,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:55:43,646 INFO L130 PetriNetUnfolder]: 585/1061 cut-off events. [2023-01-28 11:55:43,646 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-28 11:55:43,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 1061 events. 585/1061 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5763 event pairs, 180 based on Foata normal form. 26/1059 useless extension candidates. Maximal degree in co-relation 1491. Up to 756 conditions per place. [2023-01-28 11:55:43,655 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-01-28 11:55:43,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 200 flow [2023-01-28 11:55:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:55:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:55:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-28 11:55:43,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-01-28 11:55:43,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-28 11:55:43,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-28 11:55:43,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:55:43,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-28 11:55:43,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-01-28 11:55:43,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:43,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:43,682 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 106 flow. Second operand 3 states and 390 transitions. [2023-01-28 11:55:43,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 200 flow [2023-01-28 11:55:43,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 11:55:43,686 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 98 flow [2023-01-28 11:55:43,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-01-28 11:55:43,691 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-01-28 11:55:43,691 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 98 flow [2023-01-28 11:55:43,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:43,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:43,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:43,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:55:43,692 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)] === [2023-01-28 11:55:43,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1246737449, now seen corresponding path program 2 times [2023-01-28 11:55:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795528950] [2023-01-28 11:55:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:43,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:55:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:55:43,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:55:43,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795528950] [2023-01-28 11:55:43,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795528950] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:55:43,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:55:43,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:55:43,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270611047] [2023-01-28 11:55:43,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:55:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:55:43,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:55:43,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:55:43,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:55:43,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 11:55:43,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:43,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:55:43,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 11:55:43,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:55:44,015 INFO L130 PetriNetUnfolder]: 573/989 cut-off events. [2023-01-28 11:55:44,015 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-28 11:55:44,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 989 events. 573/989 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5242 event pairs, 440 based on Foata normal form. 21/986 useless extension candidates. Maximal degree in co-relation 1738. Up to 836 conditions per place. [2023-01-28 11:55:44,019 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-01-28 11:55:44,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 190 flow [2023-01-28 11:55:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:55:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:55:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-28 11:55:44,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-01-28 11:55:44,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-28 11:55:44,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-28 11:55:44,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:55:44,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-28 11:55:44,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-01-28 11:55:44,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:44,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:44,023 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 3 states and 390 transitions. [2023-01-28 11:55:44,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 190 flow [2023-01-28 11:55:44,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 11:55:44,025 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 102 flow [2023-01-28 11:55:44,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-01-28 11:55:44,026 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-01-28 11:55:44,026 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 102 flow [2023-01-28 11:55:44,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:44,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:44,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:44,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 11:55:44,026 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)] === [2023-01-28 11:55:44,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -794314321, now seen corresponding path program 3 times [2023-01-28 11:55:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:44,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517355378] [2023-01-28 11:55:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:44,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:55:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:55:44,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:55:44,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517355378] [2023-01-28 11:55:44,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517355378] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:55:44,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:55:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:55:44,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263204797] [2023-01-28 11:55:44,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:55:44,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:55:44,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:55:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:55:44,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:55:44,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 11:55:44,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:44,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:55:44,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 11:55:44,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:55:44,367 INFO L130 PetriNetUnfolder]: 623/1095 cut-off events. [2023-01-28 11:55:44,368 INFO L131 PetriNetUnfolder]: For 171/190 co-relation queries the response was YES. [2023-01-28 11:55:44,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 1095 events. 623/1095 cut-off events. For 171/190 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5800 event pairs, 176 based on Foata normal form. 17/1068 useless extension candidates. Maximal degree in co-relation 2220. Up to 816 conditions per place. [2023-01-28 11:55:44,373 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-01-28 11:55:44,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 203 flow [2023-01-28 11:55:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:55:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:55:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-01-28 11:55:44,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-01-28 11:55:44,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-01-28 11:55:44,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-01-28 11:55:44,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:55:44,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-01-28 11:55:44,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-01-28 11:55:44,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:44,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:44,377 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 102 flow. Second operand 3 states and 392 transitions. [2023-01-28 11:55:44,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 203 flow [2023-01-28 11:55:44,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 11:55:44,378 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 106 flow [2023-01-28 11:55:44,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-01-28 11:55:44,379 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-01-28 11:55:44,384 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 106 flow [2023-01-28 11:55:44,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:44,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:44,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:44,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 11:55:44,385 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)] === [2023-01-28 11:55:44,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1839241021, now seen corresponding path program 4 times [2023-01-28 11:55:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815661909] [2023-01-28 11:55:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:55:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:55:46,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:55:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815661909] [2023-01-28 11:55:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815661909] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:55:46,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:55:46,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:55:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568082092] [2023-01-28 11:55:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:55:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:55:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:55:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:55:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:55:46,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:55:46,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 106 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:55:46,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:55:46,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:55:46,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:55:48,214 INFO L130 PetriNetUnfolder]: 8470/12724 cut-off events. [2023-01-28 11:55:48,214 INFO L131 PetriNetUnfolder]: For 1747/1747 co-relation queries the response was YES. [2023-01-28 11:55:48,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26988 conditions, 12724 events. 8470/12724 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 73112 event pairs, 1567 based on Foata normal form. 1/12717 useless extension candidates. Maximal degree in co-relation 10773. Up to 3244 conditions per place. [2023-01-28 11:55:48,263 INFO L137 encePairwiseOnDemand]: 207/221 looper letters, 224 selfloop transitions, 16 changer transitions 16/260 dead transitions. [2023-01-28 11:55:48,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 260 transitions, 1146 flow [2023-01-28 11:55:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 11:55:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 11:55:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1607 transitions. [2023-01-28 11:55:48,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847662141779789 [2023-01-28 11:55:48,270 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1607 transitions. [2023-01-28 11:55:48,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1607 transitions. [2023-01-28 11:55:48,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:55:48,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1607 transitions. [2023-01-28 11:55:48,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 107.13333333333334) internal successors, (1607), 15 states have internal predecessors, (1607), 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) [2023-01-28 11:55:48,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 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) [2023-01-28 11:55:48,278 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 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) [2023-01-28 11:55:48,278 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 106 flow. Second operand 15 states and 1607 transitions. [2023-01-28 11:55:48,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 260 transitions, 1146 flow [2023-01-28 11:55:48,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 260 transitions, 1142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 11:55:48,284 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 221 flow [2023-01-28 11:55:48,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=221, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-01-28 11:55:48,285 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-01-28 11:55:48,285 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 221 flow [2023-01-28 11:55:48,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:55:48,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:48,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 11:55:48,286 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)] === [2023-01-28 11:55:48,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash 491926227, now seen corresponding path program 5 times [2023-01-28 11:55:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:48,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039121690] [2023-01-28 11:55:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:55:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:55:48,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:55:48,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039121690] [2023-01-28 11:55:48,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039121690] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:55:48,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:55:48,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:55:48,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940927938] [2023-01-28 11:55:48,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:55:48,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:55:48,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:55:48,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:55:48,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:55:48,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-28 11:55:48,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:48,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:55:48,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-28 11:55:48,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:55:48,695 INFO L130 PetriNetUnfolder]: 1445/2509 cut-off events. [2023-01-28 11:55:48,696 INFO L131 PetriNetUnfolder]: For 2967/3064 co-relation queries the response was YES. [2023-01-28 11:55:48,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 2509 events. 1445/2509 cut-off events. For 2967/3064 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16297 event pairs, 1093 based on Foata normal form. 59/2447 useless extension candidates. Maximal degree in co-relation 7272. Up to 2221 conditions per place. [2023-01-28 11:55:48,710 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 40 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-01-28 11:55:48,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 322 flow [2023-01-28 11:55:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:55:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:55:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-01-28 11:55:48,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-01-28 11:55:48,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-01-28 11:55:48,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-01-28 11:55:48,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:55:48,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-01-28 11:55:48,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-01-28 11:55:48,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:48,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:55:48,714 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 221 flow. Second operand 3 states and 392 transitions. [2023-01-28 11:55:48,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 322 flow [2023-01-28 11:55:48,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 312 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 11:55:48,728 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 201 flow [2023-01-28 11:55:48,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-01-28 11:55:48,730 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-01-28 11:55:48,730 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 201 flow [2023-01-28 11:55:48,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-01-28 11:55:48,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:48,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:48,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 11:55:48,731 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)] === [2023-01-28 11:55:48,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2048283425, now seen corresponding path program 6 times [2023-01-28 11:55:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82313247] [2023-01-28 11:55:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:55:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:55:49,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:55:49,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82313247] [2023-01-28 11:55:49,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82313247] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:55:49,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:55:50,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:55:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120252710] [2023-01-28 11:55:50,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:55:50,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:55:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:55:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:55:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:55:50,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:55:50,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 201 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:55:50,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:55:50,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:55:50,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:55:52,485 INFO L130 PetriNetUnfolder]: 12797/19577 cut-off events. [2023-01-28 11:55:52,485 INFO L131 PetriNetUnfolder]: For 14911/14911 co-relation queries the response was YES. [2023-01-28 11:55:52,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55233 conditions, 19577 events. 12797/19577 cut-off events. For 14911/14911 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 122873 event pairs, 2369 based on Foata normal form. 1/19578 useless extension candidates. Maximal degree in co-relation 41818. Up to 5867 conditions per place. [2023-01-28 11:55:52,573 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 208 selfloop transitions, 23 changer transitions 9/244 dead transitions. [2023-01-28 11:55:52,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 244 transitions, 1349 flow [2023-01-28 11:55:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 11:55:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 11:55:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1476 transitions. [2023-01-28 11:55:52,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770523594053006 [2023-01-28 11:55:52,577 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1476 transitions. [2023-01-28 11:55:52,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1476 transitions. [2023-01-28 11:55:52,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:55:52,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1476 transitions. [2023-01-28 11:55:52,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.42857142857143) internal successors, (1476), 14 states have internal predecessors, (1476), 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) [2023-01-28 11:55:52,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:55:52,583 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:55:52,583 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 201 flow. Second operand 14 states and 1476 transitions. [2023-01-28 11:55:52,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 244 transitions, 1349 flow [2023-01-28 11:55:52,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 244 transitions, 1345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 11:55:52,671 INFO L231 Difference]: Finished difference. Result has 92 places, 70 transitions, 412 flow [2023-01-28 11:55:52,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=412, PETRI_PLACES=92, PETRI_TRANSITIONS=70} [2023-01-28 11:55:52,671 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2023-01-28 11:55:52,671 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 70 transitions, 412 flow [2023-01-28 11:55:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:55:52,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:52,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:52,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 11:55:52,672 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)] === [2023-01-28 11:55:52,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:52,673 INFO L85 PathProgramCache]: Analyzing trace with hash 516308761, now seen corresponding path program 7 times [2023-01-28 11:55:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:52,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485707645] [2023-01-28 11:55:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:52,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:55:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:55:53,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:55:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485707645] [2023-01-28 11:55:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485707645] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:55:53,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:55:53,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:55:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353410324] [2023-01-28 11:55:53,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:55:53,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:55:53,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:55:53,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:55:53,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:55:53,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:55:53,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 70 transitions, 412 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:55:53,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:55:53,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:55:53,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:55:57,674 INFO L130 PetriNetUnfolder]: 22421/34788 cut-off events. [2023-01-28 11:55:57,674 INFO L131 PetriNetUnfolder]: For 73311/73311 co-relation queries the response was YES. [2023-01-28 11:55:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120405 conditions, 34788 events. 22421/34788 cut-off events. For 73311/73311 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 246472 event pairs, 5189 based on Foata normal form. 1/34789 useless extension candidates. Maximal degree in co-relation 120145. Up to 11164 conditions per place. [2023-01-28 11:55:57,872 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 275 selfloop transitions, 36 changer transitions 9/324 dead transitions. [2023-01-28 11:55:57,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 324 transitions, 2296 flow [2023-01-28 11:55:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 11:55:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 11:55:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1496 transitions. [2023-01-28 11:55:57,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2023-01-28 11:55:57,875 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1496 transitions. [2023-01-28 11:55:57,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1496 transitions. [2023-01-28 11:55:57,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:55:57,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1496 transitions. [2023-01-28 11:55:57,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.85714285714286) internal successors, (1496), 14 states have internal predecessors, (1496), 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) [2023-01-28 11:55:57,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:55:57,882 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:55:57,883 INFO L175 Difference]: Start difference. First operand has 92 places, 70 transitions, 412 flow. Second operand 14 states and 1496 transitions. [2023-01-28 11:55:57,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 324 transitions, 2296 flow [2023-01-28 11:55:59,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 324 transitions, 2242 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-28 11:55:59,122 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 798 flow [2023-01-28 11:55:59,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=798, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-01-28 11:55:59,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2023-01-28 11:55:59,123 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 798 flow [2023-01-28 11:55:59,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:55:59,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:55:59,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:55:59,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 11:55:59,124 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)] === [2023-01-28 11:55:59,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:55:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash 933027707, now seen corresponding path program 8 times [2023-01-28 11:55:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:55:59,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967099526] [2023-01-28 11:55:59,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:55:59,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:55:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:56:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:56:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:56:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967099526] [2023-01-28 11:56:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967099526] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:56:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:56:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:56:00,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727220788] [2023-01-28 11:56:00,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:56:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:56:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:56:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:56:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:56:00,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:56:00,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 798 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:56:00,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:56:00,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:56:00,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:56:06,748 INFO L130 PetriNetUnfolder]: 35953/56513 cut-off events. [2023-01-28 11:56:06,748 INFO L131 PetriNetUnfolder]: For 243293/243293 co-relation queries the response was YES. [2023-01-28 11:56:07,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233532 conditions, 56513 events. 35953/56513 cut-off events. For 243293/243293 co-relation queries the response was YES. Maximal size of possible extension queue 2017. Compared 441665 event pairs, 8935 based on Foata normal form. 1/56514 useless extension candidates. Maximal degree in co-relation 232967. Up to 17367 conditions per place. [2023-01-28 11:56:07,308 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 322 selfloop transitions, 61 changer transitions 9/396 dead transitions. [2023-01-28 11:56:07,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 396 transitions, 3586 flow [2023-01-28 11:56:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 11:56:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 11:56:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1499 transitions. [2023-01-28 11:56:07,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48448610213316096 [2023-01-28 11:56:07,312 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1499 transitions. [2023-01-28 11:56:07,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1499 transitions. [2023-01-28 11:56:07,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:56:07,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1499 transitions. [2023-01-28 11:56:07,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.07142857142857) internal successors, (1499), 14 states have internal predecessors, (1499), 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) [2023-01-28 11:56:07,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:56:07,319 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:56:07,319 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 798 flow. Second operand 14 states and 1499 transitions. [2023-01-28 11:56:07,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 396 transitions, 3586 flow [2023-01-28 11:56:11,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 396 transitions, 3494 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-01-28 11:56:11,827 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 1629 flow [2023-01-28 11:56:11,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1629, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-01-28 11:56:11,828 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2023-01-28 11:56:11,828 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 1629 flow [2023-01-28 11:56:11,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:56:11,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:56:11,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:56:11,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 11:56:11,829 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)] === [2023-01-28 11:56:11,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:56:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1142875245, now seen corresponding path program 9 times [2023-01-28 11:56:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:56:11,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232293714] [2023-01-28 11:56:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:56:11,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:56:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:56:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:56:12,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:56:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232293714] [2023-01-28 11:56:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232293714] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:56:12,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:56:12,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:56:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543529707] [2023-01-28 11:56:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:56:12,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:56:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:56:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:56:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:56:12,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:56:12,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 1629 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:56:12,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:56:12,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:56:12,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:56:21,563 INFO L130 PetriNetUnfolder]: 45151/72741 cut-off events. [2023-01-28 11:56:21,563 INFO L131 PetriNetUnfolder]: For 504152/504152 co-relation queries the response was YES. [2023-01-28 11:56:22,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343217 conditions, 72741 events. 45151/72741 cut-off events. For 504152/504152 co-relation queries the response was YES. Maximal size of possible extension queue 2688. Compared 612510 event pairs, 11539 based on Foata normal form. 1/72742 useless extension candidates. Maximal degree in co-relation 342215. Up to 17698 conditions per place. [2023-01-28 11:56:22,533 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 357 selfloop transitions, 85 changer transitions 10/456 dead transitions. [2023-01-28 11:56:22,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 456 transitions, 5065 flow [2023-01-28 11:56:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 11:56:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 11:56:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1493 transitions. [2023-01-28 11:56:22,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825468648998061 [2023-01-28 11:56:22,540 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1493 transitions. [2023-01-28 11:56:22,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1493 transitions. [2023-01-28 11:56:22,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:56:22,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1493 transitions. [2023-01-28 11:56:22,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.64285714285714) internal successors, (1493), 14 states have internal predecessors, (1493), 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) [2023-01-28 11:56:22,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:56:22,550 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:56:22,550 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 1629 flow. Second operand 14 states and 1493 transitions. [2023-01-28 11:56:22,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 456 transitions, 5065 flow [2023-01-28 11:56:31,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 456 transitions, 4969 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-01-28 11:56:31,449 INFO L231 Difference]: Finished difference. Result has 158 places, 188 transitions, 2619 flow [2023-01-28 11:56:31,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2619, PETRI_PLACES=158, PETRI_TRANSITIONS=188} [2023-01-28 11:56:31,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2023-01-28 11:56:31,450 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 188 transitions, 2619 flow [2023-01-28 11:56:31,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:56:31,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:56:31,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:56:31,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 11:56:31,451 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)] === [2023-01-28 11:56:31,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:56:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash -307061275, now seen corresponding path program 10 times [2023-01-28 11:56:31,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:56:31,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684512365] [2023-01-28 11:56:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:56:31,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:56:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:56:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:56:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:56:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684512365] [2023-01-28 11:56:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684512365] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:56:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:56:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:56:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111256910] [2023-01-28 11:56:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:56:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:56:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:56:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:56:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:56:32,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:56:32,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 188 transitions, 2619 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:56:32,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:56:32,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:56:32,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:56:46,716 INFO L130 PetriNetUnfolder]: 63494/105675 cut-off events. [2023-01-28 11:56:46,717 INFO L131 PetriNetUnfolder]: For 1189542/1189542 co-relation queries the response was YES. [2023-01-28 11:56:47,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571337 conditions, 105675 events. 63494/105675 cut-off events. For 1189542/1189542 co-relation queries the response was YES. Maximal size of possible extension queue 4114. Compared 986921 event pairs, 18359 based on Foata normal form. 1/105668 useless extension candidates. Maximal degree in co-relation 569249. Up to 29841 conditions per place. [2023-01-28 11:56:48,333 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 545 selfloop transitions, 99 changer transitions 11/659 dead transitions. [2023-01-28 11:56:48,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 659 transitions, 9954 flow [2023-01-28 11:56:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 11:56:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 11:56:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1492 transitions. [2023-01-28 11:56:48,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48222365869424694 [2023-01-28 11:56:48,337 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1492 transitions. [2023-01-28 11:56:48,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1492 transitions. [2023-01-28 11:56:48,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:56:48,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1492 transitions. [2023-01-28 11:56:48,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.57142857142857) internal successors, (1492), 14 states have internal predecessors, (1492), 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) [2023-01-28 11:56:48,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:56:48,343 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:56:48,343 INFO L175 Difference]: Start difference. First operand has 158 places, 188 transitions, 2619 flow. Second operand 14 states and 1492 transitions. [2023-01-28 11:56:48,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 659 transitions, 9954 flow [2023-01-28 11:57:18,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 659 transitions, 9699 flow, removed 119 selfloop flow, removed 2 redundant places. [2023-01-28 11:57:18,573 INFO L231 Difference]: Finished difference. Result has 180 places, 264 transitions, 4291 flow [2023-01-28 11:57:18,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4291, PETRI_PLACES=180, PETRI_TRANSITIONS=264} [2023-01-28 11:57:18,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2023-01-28 11:57:18,574 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 264 transitions, 4291 flow [2023-01-28 11:57:18,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:57:18,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:57:18,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:57:18,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 11:57:18,574 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)] === [2023-01-28 11:57:18,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:57:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1994198369, now seen corresponding path program 11 times [2023-01-28 11:57:18,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:57:18,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292615925] [2023-01-28 11:57:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:57:18,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:57:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:57:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:57:19,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:57:19,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292615925] [2023-01-28 11:57:19,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292615925] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:57:19,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:57:19,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:57:19,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969567654] [2023-01-28 11:57:19,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:57:19,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:57:19,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:57:19,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:57:19,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:57:19,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:57:19,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 264 transitions, 4291 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:57:19,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:57:19,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:57:19,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:57:40,377 INFO L130 PetriNetUnfolder]: 75049/128442 cut-off events. [2023-01-28 11:57:40,377 INFO L131 PetriNetUnfolder]: For 1853392/1853392 co-relation queries the response was YES. [2023-01-28 11:57:41,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751359 conditions, 128442 events. 75049/128442 cut-off events. For 1853392/1853392 co-relation queries the response was YES. Maximal size of possible extension queue 5216. Compared 1274523 event pairs, 23957 based on Foata normal form. 1/128443 useless extension candidates. Maximal degree in co-relation 748393. Up to 50069 conditions per place. [2023-01-28 11:57:42,453 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 495 selfloop transitions, 133 changer transitions 9/641 dead transitions. [2023-01-28 11:57:42,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 641 transitions, 10054 flow [2023-01-28 11:57:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 11:57:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 11:57:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1485 transitions. [2023-01-28 11:57:42,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799612152553329 [2023-01-28 11:57:42,481 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1485 transitions. [2023-01-28 11:57:42,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1485 transitions. [2023-01-28 11:57:42,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:57:42,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1485 transitions. [2023-01-28 11:57:42,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.07142857142857) internal successors, (1485), 14 states have internal predecessors, (1485), 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) [2023-01-28 11:57:42,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:57:42,496 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:57:42,497 INFO L175 Difference]: Start difference. First operand has 180 places, 264 transitions, 4291 flow. Second operand 14 states and 1485 transitions. [2023-01-28 11:57:42,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 641 transitions, 10054 flow [2023-01-28 11:58:21,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 641 transitions, 9696 flow, removed 170 selfloop flow, removed 3 redundant places. [2023-01-28 11:58:21,953 INFO L231 Difference]: Finished difference. Result has 201 places, 340 transitions, 6093 flow [2023-01-28 11:58:21,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6093, PETRI_PLACES=201, PETRI_TRANSITIONS=340} [2023-01-28 11:58:21,953 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2023-01-28 11:58:21,956 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 340 transitions, 6093 flow [2023-01-28 11:58:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:58:21,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:58:21,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:58:21,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 11:58:21,957 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)] === [2023-01-28 11:58:21,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:58:21,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1945538019, now seen corresponding path program 12 times [2023-01-28 11:58:21,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:58:21,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090288827] [2023-01-28 11:58:21,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:58:21,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:58:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:58:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:58:22,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:58:22,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090288827] [2023-01-28 11:58:22,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090288827] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:58:22,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:58:22,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 11:58:22,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094371673] [2023-01-28 11:58:22,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:58:22,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:58:22,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:58:22,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:58:22,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:58:22,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 11:58:22,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 340 transitions, 6093 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 11:58:22,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:58:22,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 11:58:22,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:58:53,563 INFO L130 PetriNetUnfolder]: 92388/166651 cut-off events. [2023-01-28 11:58:53,563 INFO L131 PetriNetUnfolder]: For 2878832/2878832 co-relation queries the response was YES. [2023-01-28 11:58:55,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022179 conditions, 166651 events. 92388/166651 cut-off events. For 2878832/2878832 co-relation queries the response was YES. Maximal size of possible extension queue 7261. Compared 1831828 event pairs, 25395 based on Foata normal form. 1/166652 useless extension candidates. Maximal degree in co-relation 1021916. Up to 42656 conditions per place. [2023-01-28 11:58:56,496 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 792 selfloop transitions, 96 changer transitions 12/904 dead transitions. [2023-01-28 11:58:56,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 904 transitions, 16482 flow [2023-01-28 11:58:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 11:58:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 11:58:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1508 transitions. [2023-01-28 11:58:56,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2023-01-28 11:58:56,499 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1508 transitions. [2023-01-28 11:58:56,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1508 transitions. [2023-01-28 11:58:56,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:58:56,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1508 transitions. [2023-01-28 11:58:56,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.71428571428571) internal successors, (1508), 14 states have internal predecessors, (1508), 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) [2023-01-28 11:58:56,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:58:56,504 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-01-28 11:58:56,504 INFO L175 Difference]: Start difference. First operand has 201 places, 340 transitions, 6093 flow. Second operand 14 states and 1508 transitions. [2023-01-28 11:58:56,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 904 transitions, 16482 flow [2023-01-28 12:00:06,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 904 transitions, 15900 flow, removed 275 selfloop flow, removed 3 redundant places. [2023-01-28 12:00:06,021 INFO L231 Difference]: Finished difference. Result has 222 places, 404 transitions, 7415 flow [2023-01-28 12:00:06,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5858, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7415, PETRI_PLACES=222, PETRI_TRANSITIONS=404} [2023-01-28 12:00:06,023 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2023-01-28 12:00:06,023 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 404 transitions, 7415 flow [2023-01-28 12:00:06,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 12:00:06,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:00:06,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:00:06,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 12:00:06,024 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)] === [2023-01-28 12:00:06,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:00:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1093714013, now seen corresponding path program 13 times [2023-01-28 12:00:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:00:06,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852450806] [2023-01-28 12:00:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:00:06,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:00:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:00:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:00:07,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:00:07,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852450806] [2023-01-28 12:00:07,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852450806] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:00:07,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:00:07,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 12:00:07,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634332594] [2023-01-28 12:00:07,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:00:07,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 12:00:07,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:00:07,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 12:00:07,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-28 12:00:07,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-28 12:00:07,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 404 transitions, 7415 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 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) [2023-01-28 12:00:07,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:00:07,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-28 12:00:07,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand