/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 07:56:01,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 07:56:01,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 07:56:01,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 07:56:01,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 07:56:01,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 07:56:01,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 07:56:01,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 07:56:01,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 07:56:01,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 07:56:01,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 07:56:01,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 07:56:01,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 07:56:01,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 07:56:01,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 07:56:01,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 07:56:01,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 07:56:01,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 07:56:01,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 07:56:01,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 07:56:01,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 07:56:01,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 07:56:01,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 07:56:01,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 07:56:01,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 07:56:01,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 07:56:01,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 07:56:01,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 07:56:01,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 07:56:01,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 07:56:01,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 07:56:01,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 07:56:01,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 07:56:01,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 07:56:01,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 07:56:01,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 07:56:01,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 07:56:01,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 07:56:01,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 07:56:01,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 07:56:01,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 07:56:01,579 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-RepeatedSemanticLbe.epf [2022-12-13 07:56:01,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 07:56:01,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 07:56:01,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 07:56:01,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 07:56:01,608 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 07:56:01,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 07:56:01,609 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 07:56:01,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 07:56:01,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 07:56:01,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 07:56:01,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 07:56:01,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 07:56:01,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 07:56:01,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 07:56:01,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 07:56:01,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 07:56:01,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 07:56:01,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 07:56:01,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 07:56:01,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 07:56:01,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 07:56:01,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 07:56:01,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 07:56:01,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 07:56:01,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 07:56:01,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 07:56:01,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 07:56:01,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 07:56:01,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-13 07:56:01,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 07:56:01,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 07:56:01,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 07:56:01,867 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 07:56:01,867 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 07:56:01,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-13 07:56:02,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 07:56:03,025 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 07:56:03,025 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-13 07:56:03,030 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5a339d7/cce2d2ae80e14206be417becce811dc0/FLAG0e4f1f59a [2022-12-13 07:56:03,041 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5a339d7/cce2d2ae80e14206be417becce811dc0 [2022-12-13 07:56:03,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 07:56:03,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 07:56:03,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 07:56:03,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 07:56:03,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 07:56:03,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf3e8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03, skipping insertion in model container [2022-12-13 07:56:03,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 07:56:03,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 07:56:03,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,165 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-13 07:56:03,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 07:56:03,176 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 07:56:03,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 07:56:03,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 07:56:03,210 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-13 07:56:03,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 07:56:03,223 INFO L208 MainTranslator]: Completed translation [2022-12-13 07:56:03,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03 WrapperNode [2022-12-13 07:56:03,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 07:56:03,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 07:56:03,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 07:56:03,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 07:56:03,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,272 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 174 [2022-12-13 07:56:03,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 07:56:03,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 07:56:03,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 07:56:03,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 07:56:03,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 07:56:03,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 07:56:03,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 07:56:03,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 07:56:03,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (1/1) ... [2022-12-13 07:56:03,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 07:56:03,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 07:56:03,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 07:56:03,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 07:56:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 07:56:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 07:56:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 07:56:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 07:56:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 07:56:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 07:56:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 07:56:03,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 07:56:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 07:56:03,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 07:56:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 07:56:03,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 07:56:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 07:56:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 07:56:03,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 07:56:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 07:56:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 07:56:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 07:56:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 07:56:03,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 07:56:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 07:56:03,398 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 07:56:03,529 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 07:56:03,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 07:56:03,869 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 07:56:03,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 07:56:03,949 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 07:56:03,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:56:03 BoogieIcfgContainer [2022-12-13 07:56:03,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 07:56:03,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 07:56:03,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 07:56:03,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 07:56:03,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:56:03" (1/3) ... [2022-12-13 07:56:03,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ada7dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:56:03, skipping insertion in model container [2022-12-13 07:56:03,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:56:03" (2/3) ... [2022-12-13 07:56:03,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ada7dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:56:03, skipping insertion in model container [2022-12-13 07:56:03,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:56:03" (3/3) ... [2022-12-13 07:56:03,956 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-12-13 07:56:03,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 07:56:03,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 07:56:03,969 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 07:56:04,018 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 07:56:04,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 183 transitions, 406 flow [2022-12-13 07:56:04,142 INFO L130 PetriNetUnfolder]: 14/178 cut-off events. [2022-12-13 07:56:04,142 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 07:56:04,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 178 events. 14/178 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2022-12-13 07:56:04,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 183 transitions, 406 flow [2022-12-13 07:56:04,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 164 transitions, 358 flow [2022-12-13 07:56:04,156 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:56:04,181 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 164 transitions, 358 flow [2022-12-13 07:56:04,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 164 transitions, 358 flow [2022-12-13 07:56:04,226 INFO L130 PetriNetUnfolder]: 14/164 cut-off events. [2022-12-13 07:56:04,226 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 07:56:04,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 164 events. 14/164 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 130 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2022-12-13 07:56:04,232 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 164 transitions, 358 flow [2022-12-13 07:56:04,232 INFO L226 LiptonReduction]: Number of co-enabled transitions 3806 [2022-12-13 07:56:12,483 INFO L241 LiptonReduction]: Total number of compositions: 126 [2022-12-13 07:56:12,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 07:56:12,505 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=REPEATED_LIPTON_PN, 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;@2423a057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 07:56:12,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 07:56:12,525 INFO L130 PetriNetUnfolder]: 5/37 cut-off events. [2022-12-13 07:56:12,526 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 07:56:12,526 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:56:12,535 INFO L214 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] [2022-12-13 07:56:12,536 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 3 more)] === [2022-12-13 07:56:12,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:56:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1329809375, now seen corresponding path program 1 times [2022-12-13 07:56:12,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:56:12,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443889260] [2022-12-13 07:56:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:56:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 07:56:12,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:56:12,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443889260] [2022-12-13 07:56:12,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443889260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:56:12,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:56:12,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 07:56:12,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213259233] [2022-12-13 07:56:12,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:56:12,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 07:56:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:56:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 07:56:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 07:56:12,965 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 07:56:12,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:12,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:56:12,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 07:56:12,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:56:13,607 INFO L130 PetriNetUnfolder]: 6110/7594 cut-off events. [2022-12-13 07:56:13,608 INFO L131 PetriNetUnfolder]: For 287/287 co-relation queries the response was YES. [2022-12-13 07:56:13,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15782 conditions, 7594 events. 6110/7594 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 30199 event pairs, 2980 based on Foata normal form. 0/5304 useless extension candidates. Maximal degree in co-relation 13404. Up to 6012 conditions per place. [2022-12-13 07:56:13,648 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 52 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2022-12-13 07:56:13,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 266 flow [2022-12-13 07:56:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 07:56:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 07:56:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-12-13 07:56:13,660 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-12-13 07:56:13,663 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2022-12-13 07:56:13,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 57 transitions, 266 flow [2022-12-13 07:56:13,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 57 transitions, 266 flow [2022-12-13 07:56:13,754 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:56:13,755 INFO L89 Accepts]: Start accepts. Operand has 52 places, 57 transitions, 266 flow [2022-12-13 07:56:13,758 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:56:13,758 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:56:13,758 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 57 transitions, 266 flow [2022-12-13 07:56:13,761 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 57 transitions, 266 flow [2022-12-13 07:56:13,761 INFO L226 LiptonReduction]: Number of co-enabled transitions 138 [2022-12-13 07:56:13,765 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 07:56:13,766 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 12 [2022-12-13 07:56:13,766 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 266 flow [2022-12-13 07:56:13,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:13,766 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:56:13,766 INFO L214 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] [2022-12-13 07:56:13,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 07:56:13,766 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 3 more)] === [2022-12-13 07:56:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:56:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash 200545949, now seen corresponding path program 1 times [2022-12-13 07:56:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:56:13,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115417332] [2022-12-13 07:56:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:13,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:56:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 07:56:13,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:56:13,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115417332] [2022-12-13 07:56:13,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115417332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:56:13,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:56:13,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 07:56:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335470070] [2022-12-13 07:56:13,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:56:13,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 07:56:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:56:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 07:56:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 07:56:13,848 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 07:56:13,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:13,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:56:13,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 07:56:13,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:56:14,458 INFO L130 PetriNetUnfolder]: 7646/9442 cut-off events. [2022-12-13 07:56:14,459 INFO L131 PetriNetUnfolder]: For 520/708 co-relation queries the response was YES. [2022-12-13 07:56:14,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29053 conditions, 9442 events. 7646/9442 cut-off events. For 520/708 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 38763 event pairs, 3057 based on Foata normal form. 3/6608 useless extension candidates. Maximal degree in co-relation 25548. Up to 7726 conditions per place. [2022-12-13 07:56:14,502 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 83 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2022-12-13 07:56:14,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 90 transitions, 595 flow [2022-12-13 07:56:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 07:56:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 07:56:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-12-13 07:56:14,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-12-13 07:56:14,504 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2022-12-13 07:56:14,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 90 transitions, 595 flow [2022-12-13 07:56:14,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 90 transitions, 595 flow [2022-12-13 07:56:14,565 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:56:14,565 INFO L89 Accepts]: Start accepts. Operand has 55 places, 90 transitions, 595 flow [2022-12-13 07:56:14,566 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:56:14,566 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:56:14,566 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 90 transitions, 595 flow [2022-12-13 07:56:14,568 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 90 transitions, 595 flow [2022-12-13 07:56:14,568 INFO L226 LiptonReduction]: Number of co-enabled transitions 222 [2022-12-13 07:56:14,571 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 07:56:14,572 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 7 [2022-12-13 07:56:14,572 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 90 transitions, 595 flow [2022-12-13 07:56:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:14,572 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:56:14,572 INFO L214 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] [2022-12-13 07:56:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 07:56:14,572 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 3 more)] === [2022-12-13 07:56:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:56:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash -462492978, now seen corresponding path program 1 times [2022-12-13 07:56:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:56:14,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654285666] [2022-12-13 07:56:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:56:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 07:56:14,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:56:14,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654285666] [2022-12-13 07:56:14,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654285666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:56:14,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:56:14,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 07:56:14,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078413188] [2022-12-13 07:56:14,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:56:14,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 07:56:14,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:56:14,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 07:56:14,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 07:56:14,694 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 38 [2022-12-13 07:56:14,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 90 transitions, 595 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:14,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:56:14,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 38 [2022-12-13 07:56:14,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:56:15,467 INFO L130 PetriNetUnfolder]: 9416/11784 cut-off events. [2022-12-13 07:56:15,467 INFO L131 PetriNetUnfolder]: For 4694/4925 co-relation queries the response was YES. [2022-12-13 07:56:15,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46952 conditions, 11784 events. 9416/11784 cut-off events. For 4694/4925 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 49384 event pairs, 2613 based on Foata normal form. 11/9000 useless extension candidates. Maximal degree in co-relation 41372. Up to 9190 conditions per place. [2022-12-13 07:56:15,512 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 145 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2022-12-13 07:56:15,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 152 transitions, 1302 flow [2022-12-13 07:56:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 07:56:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 07:56:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-12-13 07:56:15,514 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2022-12-13 07:56:15,514 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2022-12-13 07:56:15,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 152 transitions, 1302 flow [2022-12-13 07:56:15,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 152 transitions, 1302 flow [2022-12-13 07:56:15,582 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:56:15,583 INFO L89 Accepts]: Start accepts. Operand has 58 places, 152 transitions, 1302 flow [2022-12-13 07:56:15,584 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:56:15,584 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:56:15,584 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 152 transitions, 1302 flow [2022-12-13 07:56:15,588 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 152 transitions, 1302 flow [2022-12-13 07:56:15,588 INFO L226 LiptonReduction]: Number of co-enabled transitions 198 [2022-12-13 07:56:15,591 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 07:56:15,592 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 10 [2022-12-13 07:56:15,592 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 152 transitions, 1302 flow [2022-12-13 07:56:15,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:15,592 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:56:15,592 INFO L214 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] [2022-12-13 07:56:15,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 07:56:15,592 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 3 more)] === [2022-12-13 07:56:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:56:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash 174833201, now seen corresponding path program 1 times [2022-12-13 07:56:15,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:56:15,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324067791] [2022-12-13 07:56:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:15,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:56:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 07:56:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:56:15,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324067791] [2022-12-13 07:56:15,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324067791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:56:15,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:56:15,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 07:56:15,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529487004] [2022-12-13 07:56:15,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:56:15,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 07:56:15,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:56:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 07:56:15,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 07:56:15,663 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 38 [2022-12-13 07:56:15,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 152 transitions, 1302 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:15,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:56:15,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 38 [2022-12-13 07:56:15,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:56:16,734 INFO L130 PetriNetUnfolder]: 12120/15187 cut-off events. [2022-12-13 07:56:16,734 INFO L131 PetriNetUnfolder]: For 23976/24150 co-relation queries the response was YES. [2022-12-13 07:56:16,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73978 conditions, 15187 events. 12120/15187 cut-off events. For 23976/24150 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 61511 event pairs, 2813 based on Foata normal form. 174/12724 useless extension candidates. Maximal degree in co-relation 65335. Up to 11595 conditions per place. [2022-12-13 07:56:16,791 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 247 selfloop transitions, 10 changer transitions 0/258 dead transitions. [2022-12-13 07:56:16,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 258 transitions, 2709 flow [2022-12-13 07:56:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 07:56:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 07:56:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-12-13 07:56:16,792 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2022-12-13 07:56:16,793 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2022-12-13 07:56:16,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 258 transitions, 2709 flow [2022-12-13 07:56:16,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 258 transitions, 2709 flow [2022-12-13 07:56:16,878 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:56:16,879 INFO L89 Accepts]: Start accepts. Operand has 61 places, 258 transitions, 2709 flow [2022-12-13 07:56:16,882 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:56:16,882 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:56:16,882 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 258 transitions, 2709 flow [2022-12-13 07:56:16,885 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 258 transitions, 2709 flow [2022-12-13 07:56:16,885 INFO L226 LiptonReduction]: Number of co-enabled transitions 2 [2022-12-13 07:56:16,890 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 07:56:16,896 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 18 [2022-12-13 07:56:16,896 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 258 transitions, 2709 flow [2022-12-13 07:56:16,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:16,896 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:56:16,897 INFO L214 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] [2022-12-13 07:56:16,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 07:56:16,897 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 3 more)] === [2022-12-13 07:56:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:56:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash -660413667, now seen corresponding path program 1 times [2022-12-13 07:56:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:56:16,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085003657] [2022-12-13 07:56:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:16,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:56:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 07:56:16,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:56:16,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085003657] [2022-12-13 07:56:16,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085003657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:56:16,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:56:16,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 07:56:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032856171] [2022-12-13 07:56:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:56:16,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 07:56:16,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:56:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 07:56:16,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 07:56:16,995 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 07:56:16,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 258 transitions, 2709 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:16,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:56:16,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 07:56:16,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:56:18,016 INFO L130 PetriNetUnfolder]: 12120/15188 cut-off events. [2022-12-13 07:56:18,016 INFO L131 PetriNetUnfolder]: For 48807/48981 co-relation queries the response was YES. [2022-12-13 07:56:18,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88074 conditions, 15188 events. 12120/15188 cut-off events. For 48807/48981 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61550 event pairs, 3165 based on Foata normal form. 174/12725 useless extension candidates. Maximal degree in co-relation 77800. Up to 14090 conditions per place. [2022-12-13 07:56:18,086 INFO L137 encePairwiseOnDemand]: 35/38 looper letters, 255 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2022-12-13 07:56:18,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 259 transitions, 3233 flow [2022-12-13 07:56:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 07:56:18,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 07:56:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-12-13 07:56:18,087 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2022-12-13 07:56:18,087 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2022-12-13 07:56:18,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 259 transitions, 3233 flow [2022-12-13 07:56:18,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 259 transitions, 3233 flow [2022-12-13 07:56:18,188 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:56:18,188 INFO L89 Accepts]: Start accepts. Operand has 63 places, 259 transitions, 3233 flow [2022-12-13 07:56:18,193 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:56:18,193 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:56:18,193 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 259 transitions, 3233 flow [2022-12-13 07:56:18,195 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 259 transitions, 3233 flow [2022-12-13 07:56:18,196 INFO L226 LiptonReduction]: Number of co-enabled transitions 2 [2022-12-13 07:56:20,259 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 07:56:20,260 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2072 [2022-12-13 07:56:20,260 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 258 transitions, 3221 flow [2022-12-13 07:56:20,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:20,260 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:56:20,260 INFO L214 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] [2022-12-13 07:56:20,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 07:56:20,260 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 3 more)] === [2022-12-13 07:56:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:56:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1284598036, now seen corresponding path program 1 times [2022-12-13 07:56:20,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:56:20,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30378527] [2022-12-13 07:56:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:56:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 07:56:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:56:21,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30378527] [2022-12-13 07:56:21,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30378527] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 07:56:21,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194457485] [2022-12-13 07:56:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:21,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 07:56:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 07:56:21,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 07:56:21,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 07:56:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:21,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 07:56:21,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 07:56:21,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 07:56:21,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 07:56:21,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 07:56:21,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 07:56:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 07:56:21,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-13 07:56:21,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 07:56:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 07:56:21,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 07:56:21,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2022-12-13 07:56:21,850 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (<= c_~min~0 (+ .cse0 1))))) (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~A~0.base) c_~A~0.offset))) (or (< 2147483645 .cse1) (< (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) (+ .cse1 1)) (< c_~min~0 (+ .cse1 3)))))) is different from false [2022-12-13 07:56:22,047 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_281 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281))) (or (not (< c_~min~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset))) (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse1 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse1) (<= c_~min~0 (+ .cse1 1)))))))) (forall ((v_ArrVal_281 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281))) (let ((.cse2 (select (select .cse4 c_~A~0.base) c_~A~0.offset))) (or (< c_~min~0 .cse2) (forall ((v_ArrVal_282 (Array Int Int))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~A~0.base) c_~A~0.offset))) (or (<= .cse2 (+ .cse3 1)) (<= 2147483647 .cse3))))))))) is different from false [2022-12-13 07:56:22,078 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_282 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281))) (let ((.cse1 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~A~0.base) c_~A~0.offset))) (or (<= (select (select .cse0 c_~A~0.base) c_~A~0.offset) (+ .cse1 1)) (<= 2147483647 .cse1))))) (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_282 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281))) (let ((.cse2 (select (select .cse4 c_~A~0.base) c_~A~0.offset)) (.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) c_~A~0.base) c_~A~0.offset))) (or (< .cse2 (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) 1)) (<= 2147483647 .cse3) (< .cse2 (+ 3 .cse3))))))) is different from false [2022-12-13 07:56:22,123 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_280 (Array Int Int)) (v_ArrVal_282 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_280))) (let ((.cse3 (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281))) (let ((.cse1 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (select (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse0 (+ 3 .cse1)) (<= 2147483647 .cse1) (< .cse0 (+ (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 1))))))) (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_280 (Array Int Int)) (v_ArrVal_282 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_280) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281))) (let ((.cse5 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ .cse5 1)) (<= 2147483647 .cse5)))))) is different from false [2022-12-13 07:56:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 07:56:22,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194457485] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 07:56:22,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 07:56:22,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 29 [2022-12-13 07:56:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399563420] [2022-12-13 07:56:22,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 07:56:22,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 07:56:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:56:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 07:56:22,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=593, Unknown=8, NotChecked=212, Total=930 [2022-12-13 07:56:22,129 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 07:56:22,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 258 transitions, 3221 flow. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:22,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:56:22,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 07:56:22,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:56:49,703 INFO L130 PetriNetUnfolder]: 187521/236674 cut-off events. [2022-12-13 07:56:49,703 INFO L131 PetriNetUnfolder]: For 889929/891724 co-relation queries the response was YES. [2022-12-13 07:56:50,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1598457 conditions, 236674 events. 187521/236674 cut-off events. For 889929/891724 co-relation queries the response was YES. Maximal size of possible extension queue 6487. Compared 1353806 event pairs, 2631 based on Foata normal form. 1822/184299 useless extension candidates. Maximal degree in co-relation 1584209. Up to 221501 conditions per place. [2022-12-13 07:56:51,278 INFO L137 encePairwiseOnDemand]: 18/38 looper letters, 2365 selfloop transitions, 1079 changer transitions 4004/7450 dead transitions. [2022-12-13 07:56:51,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 7450 transitions, 107682 flow [2022-12-13 07:56:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-13 07:56:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2022-12-13 07:56:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 2007 transitions. [2022-12-13 07:56:51,298 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5281578947368422 [2022-12-13 07:56:51,299 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 112 predicate places. [2022-12-13 07:56:51,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 7450 transitions, 107682 flow [2022-12-13 07:56:52,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 3446 transitions, 49811 flow [2022-12-13 07:56:53,450 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:56:53,450 INFO L89 Accepts]: Start accepts. Operand has 112 places, 3446 transitions, 49811 flow [2022-12-13 07:56:53,464 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:56:53,464 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:56:53,464 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 3446 transitions, 49811 flow [2022-12-13 07:56:53,675 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 3446 transitions, 49811 flow [2022-12-13 07:56:53,675 INFO L226 LiptonReduction]: Number of co-enabled transitions 2 [2022-12-13 07:56:53,750 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 07:56:53,751 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 301 [2022-12-13 07:56:53,751 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 3446 transitions, 49811 flow [2022-12-13 07:56:53,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:53,751 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:56:53,751 INFO L214 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] [2022-12-13 07:56:53,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-13 07:56:53,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 07:56:53,957 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 3 more)] === [2022-12-13 07:56:53,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:56:53,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1605396820, now seen corresponding path program 2 times [2022-12-13 07:56:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:56:53,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386391113] [2022-12-13 07:56:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:56:53,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:56:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:56:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 07:56:54,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:56:54,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386391113] [2022-12-13 07:56:54,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386391113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:56:54,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:56:54,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 07:56:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094910489] [2022-12-13 07:56:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:56:54,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 07:56:54,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:56:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 07:56:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 07:56:54,207 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 07:56:54,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 3446 transitions, 49811 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:56:54,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:56:54,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 07:56:54,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:57:36,040 INFO L130 PetriNetUnfolder]: 140861/180481 cut-off events. [2022-12-13 07:57:36,040 INFO L131 PetriNetUnfolder]: For 813740/815057 co-relation queries the response was YES. [2022-12-13 07:57:36,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382536 conditions, 180481 events. 140861/180481 cut-off events. For 813740/815057 co-relation queries the response was YES. Maximal size of possible extension queue 5256. Compared 1048850 event pairs, 281 based on Foata normal form. 1344/137188 useless extension candidates. Maximal degree in co-relation 1369892. Up to 168627 conditions per place. [2022-12-13 07:57:37,066 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 2772 selfloop transitions, 53 changer transitions 5233/8060 dead transitions. [2022-12-13 07:57:37,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 8060 transitions, 132047 flow [2022-12-13 07:57:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 07:57:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 07:57:37,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2022-12-13 07:57:37,067 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2022-12-13 07:57:37,067 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 67 predicate places. [2022-12-13 07:57:37,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 8060 transitions, 132047 flow [2022-12-13 07:57:37,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 2827 transitions, 46717 flow [2022-12-13 07:57:38,614 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:57:38,614 INFO L89 Accepts]: Start accepts. Operand has 96 places, 2827 transitions, 46717 flow [2022-12-13 07:57:38,634 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:57:38,635 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:57:38,635 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 2827 transitions, 46717 flow [2022-12-13 07:57:38,728 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 2827 transitions, 46717 flow [2022-12-13 07:57:38,728 INFO L226 LiptonReduction]: Number of co-enabled transitions 2 [2022-12-13 07:57:38,795 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 07:57:38,796 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 182 [2022-12-13 07:57:38,796 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 2827 transitions, 46717 flow [2022-12-13 07:57:38,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:57:38,796 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:57:38,796 INFO L214 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] [2022-12-13 07:57:38,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 07:57:38,797 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 3 more)] === [2022-12-13 07:57:38,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:57:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2129746104, now seen corresponding path program 3 times [2022-12-13 07:57:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:57:38,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047307626] [2022-12-13 07:57:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:57:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:57:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:57:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 07:57:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:57:39,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047307626] [2022-12-13 07:57:39,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047307626] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 07:57:39,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203635488] [2022-12-13 07:57:39,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 07:57:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 07:57:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 07:57:39,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 07:57:39,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 07:57:39,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 07:57:39,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 07:57:39,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 07:57:39,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 07:57:39,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 07:57:39,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 07:57:39,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 07:57:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 07:57:39,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 07:57:45,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-12-13 07:57:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 07:57:45,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203635488] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 07:57:45,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 07:57:45,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 7] total 20 [2022-12-13 07:57:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796630400] [2022-12-13 07:57:45,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:57:45,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 07:57:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:57:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 07:57:45,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=362, Unknown=9, NotChecked=0, Total=462 [2022-12-13 07:57:45,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 07:57:45,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 2827 transitions, 46717 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:57:45,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:57:45,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 07:57:45,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 07:58:32,256 INFO L130 PetriNetUnfolder]: 126102/160139 cut-off events. [2022-12-13 07:58:32,257 INFO L131 PetriNetUnfolder]: For 1062608/1063740 co-relation queries the response was YES. [2022-12-13 07:58:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382460 conditions, 160139 events. 126102/160139 cut-off events. For 1062608/1063740 co-relation queries the response was YES. Maximal size of possible extension queue 4368. Compared 892134 event pairs, 371 based on Foata normal form. 1140/121873 useless extension candidates. Maximal degree in co-relation 1362183. Up to 149868 conditions per place. [2022-12-13 07:58:33,344 INFO L137 encePairwiseOnDemand]: 26/38 looper letters, 3961 selfloop transitions, 443 changer transitions 2203/6609 dead transitions. [2022-12-13 07:58:33,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 6609 transitions, 122108 flow [2022-12-13 07:58:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 07:58:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 07:58:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2022-12-13 07:58:33,345 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5215311004784688 [2022-12-13 07:58:33,347 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, 57 predicate places. [2022-12-13 07:58:33,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 6609 transitions, 122108 flow [2022-12-13 07:58:34,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 4406 transitions, 81467 flow [2022-12-13 07:58:35,126 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 07:58:35,126 INFO L89 Accepts]: Start accepts. Operand has 101 places, 4406 transitions, 81467 flow [2022-12-13 07:58:35,146 INFO L95 Accepts]: Finished accepts. [2022-12-13 07:58:35,146 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 07:58:35,146 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 4406 transitions, 81467 flow [2022-12-13 07:58:35,254 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 4406 transitions, 81467 flow [2022-12-13 07:58:35,254 INFO L226 LiptonReduction]: Number of co-enabled transitions 2 [2022-12-13 07:58:35,314 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 07:58:35,315 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 189 [2022-12-13 07:58:35,316 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 4406 transitions, 81467 flow [2022-12-13 07:58:35,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:58:35,316 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 07:58:35,316 INFO L214 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] [2022-12-13 07:58:35,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 07:58:35,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 07:58:35,522 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 3 more)] === [2022-12-13 07:58:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:58:35,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2094294812, now seen corresponding path program 4 times [2022-12-13 07:58:35,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:58:35,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163786439] [2022-12-13 07:58:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:58:35,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:58:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:58:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 07:58:35,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:58:35,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163786439] [2022-12-13 07:58:35,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163786439] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 07:58:35,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487780085] [2022-12-13 07:58:35,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 07:58:35,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 07:58:35,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 07:58:35,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 07:58:35,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 07:58:36,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 07:58:36,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 07:58:36,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 07:58:36,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 07:58:36,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 07:58:36,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 07:58:36,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 07:58:36,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 07:58:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 07:58:36,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 07:58:42,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-12-13 07:58:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 07:58:42,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487780085] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 07:58:42,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 07:58:42,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2022-12-13 07:58:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506308165] [2022-12-13 07:58:42,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 07:58:42,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 07:58:42,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:58:42,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 07:58:42,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=608, Unknown=16, NotChecked=0, Total=756 [2022-12-13 07:58:42,557 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 38 [2022-12-13 07:58:42,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 4406 transitions, 81467 flow. Second operand has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:58:42,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 07:58:42,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 38 [2022-12-13 07:58:42,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand