/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:05:14,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:05:14,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:05:14,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:05:14,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:05:14,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:05:14,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:05:14,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:05:14,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:05:14,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:05:14,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:05:14,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:05:14,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:05:14,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:05:14,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:05:14,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:05:14,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:05:14,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:05:14,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:05:14,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:05:14,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:05:14,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:05:14,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:05:14,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:05:14,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:05:14,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:05:14,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:05:14,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:05:14,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:05:14,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:05:14,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:05:14,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:05:14,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:05:14,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:05:14,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:05:14,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:05:14,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:05:14,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:05:14,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:05:14,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:05:14,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:05:14,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:05:14,241 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:05:14,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:05:14,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:05:14,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:05:14,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:05:14,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:05:14,243 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:05:14,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:05:14,243 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:05:14,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:05:14,244 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:05:14,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:05:14,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:05:14,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:05:14,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:05:14,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:05:14,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:05:14,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:05:14,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:05:14,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:05:14,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:05:14,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:05:14,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:05:14,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:05:14,250 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:05:14,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:05:14,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:05:14,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:05:14,612 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:05:14,612 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:05:14,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-01-27 20:05:16,644 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:05:16,798 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:05:16,798 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-01-27 20:05:16,805 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a801fced/9bd07509999d417faf15fc0d5111dcec/FLAG8e62cf5e6 [2023-01-27 20:05:16,816 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a801fced/9bd07509999d417faf15fc0d5111dcec [2023-01-27 20:05:16,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:05:16,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:05:16,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:05:16,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:05:16,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:05:16,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:05:16" (1/1) ... [2023-01-27 20:05:16,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658f43e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:16, skipping insertion in model container [2023-01-27 20:05:16,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:05:16" (1/1) ... [2023-01-27 20:05:16,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:05:16,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:05:17,109 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-01-27 20:05:17,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:05:17,157 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:05:17,197 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-01-27 20:05:17,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:05:17,232 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:05:17,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17 WrapperNode [2023-01-27 20:05:17,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:05:17,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:05:17,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:05:17,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:05:17,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,314 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 281 [2023-01-27 20:05:17,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:05:17,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:05:17,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:05:17,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:05:17,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:05:17,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:05:17,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:05:17,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:05:17,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (1/1) ... [2023-01-27 20:05:17,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:05:17,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:17,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:05:17,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:05:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:05:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:05:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:05:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:05:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:05:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:05:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:05:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:05:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:05:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:05:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:05:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:05:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:05:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:05:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:05:17,548 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:05:17,673 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:05:17,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:05:18,492 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:05:18,509 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:05:18,509 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 20:05:18,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:05:18 BoogieIcfgContainer [2023-01-27 20:05:18,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:05:18,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:05:18,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:05:18,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:05:18,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:05:16" (1/3) ... [2023-01-27 20:05:18,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac0825d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:05:18, skipping insertion in model container [2023-01-27 20:05:18,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:05:17" (2/3) ... [2023-01-27 20:05:18,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac0825d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:05:18, skipping insertion in model container [2023-01-27 20:05:18,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:05:18" (3/3) ... [2023-01-27 20:05:18,547 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-01-27 20:05:18,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:05:18,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:05:18,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:05:18,762 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:05:18,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 324 transitions, 672 flow [2023-01-27 20:05:19,047 INFO L130 PetriNetUnfolder]: 29/321 cut-off events. [2023-01-27 20:05:19,047 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:05:19,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 29/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 494 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-01-27 20:05:19,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 324 transitions, 672 flow [2023-01-27 20:05:19,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 311 transitions, 640 flow [2023-01-27 20:05:19,079 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:05:19,103 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 311 transitions, 640 flow [2023-01-27 20:05:19,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 311 transitions, 640 flow [2023-01-27 20:05:19,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 640 flow [2023-01-27 20:05:19,155 INFO L130 PetriNetUnfolder]: 29/311 cut-off events. [2023-01-27 20:05:19,155 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:05:19,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 29/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 493 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-01-27 20:05:19,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 15390 [2023-01-27 20:05:36,666 INFO L134 LiptonReduction]: Checked pairs total: 14156 [2023-01-27 20:05:36,667 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-01-27 20:05:36,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:05:36,700 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@297e71a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:05:36,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:05:36,724 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-01-27 20:05:36,724 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:05:36,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:36,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:36,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:36,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:36,738 INFO L85 PathProgramCache]: Analyzing trace with hash -266383442, now seen corresponding path program 1 times [2023-01-27 20:05:36,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:36,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915586359] [2023-01-27 20:05:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:36,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:05:37,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:37,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915586359] [2023-01-27 20:05:37,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915586359] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:37,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:05:37,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:05:37,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495673283] [2023-01-27 20:05:37,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:37,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:05:37,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:37,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:05:37,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:05:37,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 676 [2023-01-27 20:05:37,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:37,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:37,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 676 [2023-01-27 20:05:37,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:37,850 INFO L130 PetriNetUnfolder]: 370/545 cut-off events. [2023-01-27 20:05:37,851 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-01-27 20:05:37,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 545 events. 370/545 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1529 event pairs, 253 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 936. Up to 543 conditions per place. [2023-01-27 20:05:37,856 INFO L137 encePairwiseOnDemand]: 668/676 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-01-27 20:05:37,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 150 flow [2023-01-27 20:05:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:05:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:05:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-01-27 20:05:37,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40433925049309666 [2023-01-27 20:05:37,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-01-27 20:05:37,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-01-27 20:05:37,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:37,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-01-27 20:05:37,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:37,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:37,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:37,936 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 820 transitions. [2023-01-27 20:05:37,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 150 flow [2023-01-27 20:05:37,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:05:37,964 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 98 flow [2023-01-27 20:05:37,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-01-27 20:05:37,986 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-01-27 20:05:37,987 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 98 flow [2023-01-27 20:05:37,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:37,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:37,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:37,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:05:37,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:37,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash -820998595, now seen corresponding path program 1 times [2023-01-27 20:05:37,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:37,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803924889] [2023-01-27 20:05:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:37,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:05:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803924889] [2023-01-27 20:05:38,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803924889] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:38,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:05:38,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:05:38,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615010936] [2023-01-27 20:05:38,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:38,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:05:38,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:05:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:05:38,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 676 [2023-01-27 20:05:38,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:38,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:38,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 676 [2023-01-27 20:05:38,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:38,688 INFO L130 PetriNetUnfolder]: 658/966 cut-off events. [2023-01-27 20:05:38,688 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 20:05:38,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 966 events. 658/966 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3451 event pairs, 253 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1954. Up to 546 conditions per place. [2023-01-27 20:05:38,698 INFO L137 encePairwiseOnDemand]: 673/676 looper letters, 45 selfloop transitions, 2 changer transitions 6/53 dead transitions. [2023-01-27 20:05:38,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 53 transitions, 249 flow [2023-01-27 20:05:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:05:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:05:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 894 transitions. [2023-01-27 20:05:38,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4408284023668639 [2023-01-27 20:05:38,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 894 transitions. [2023-01-27 20:05:38,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 894 transitions. [2023-01-27 20:05:38,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:38,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 894 transitions. [2023-01-27 20:05:38,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:38,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:38,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:38,710 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 98 flow. Second operand 3 states and 894 transitions. [2023-01-27 20:05:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 53 transitions, 249 flow [2023-01-27 20:05:38,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:05:38,715 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 104 flow [2023-01-27 20:05:38,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2023-01-27 20:05:38,716 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-01-27 20:05:38,716 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 104 flow [2023-01-27 20:05:38,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:38,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:38,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:38,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:05:38,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:38,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1628203704, now seen corresponding path program 1 times [2023-01-27 20:05:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:38,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028169705] [2023-01-27 20:05:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:05:38,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:38,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028169705] [2023-01-27 20:05:38,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028169705] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:38,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228931492] [2023-01-27 20:05:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:38,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:38,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:38,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:38,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:05:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:05:39,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:05:39,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:05:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:05:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228931492] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:05:39,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:05:39,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-27 20:05:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801439769] [2023-01-27 20:05:39,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:05:39,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:05:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:05:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:05:39,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 676 [2023-01-27 20:05:39,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 265.375) internal successors, (2123), 8 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:39,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:39,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 676 [2023-01-27 20:05:39,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:39,787 INFO L130 PetriNetUnfolder]: 658/975 cut-off events. [2023-01-27 20:05:39,787 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-01-27 20:05:39,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 975 events. 658/975 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3195 event pairs, 477 based on Foata normal form. 0/760 useless extension candidates. Maximal degree in co-relation 2085. Up to 964 conditions per place. [2023-01-27 20:05:39,791 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 28 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2023-01-27 20:05:39,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 226 flow [2023-01-27 20:05:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:05:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:05:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1617 transitions. [2023-01-27 20:05:39,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39866863905325445 [2023-01-27 20:05:39,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1617 transitions. [2023-01-27 20:05:39,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1617 transitions. [2023-01-27 20:05:39,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:39,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1617 transitions. [2023-01-27 20:05:39,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.5) internal successors, (1617), 6 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:39,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:39,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:39,805 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 104 flow. Second operand 6 states and 1617 transitions. [2023-01-27 20:05:39,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 226 flow [2023-01-27 20:05:39,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:05:39,807 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 198 flow [2023-01-27 20:05:39,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-01-27 20:05:39,807 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-01-27 20:05:39,807 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 198 flow [2023-01-27 20:05:39,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 265.375) internal successors, (2123), 8 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:39,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:39,824 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:39,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:40,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:40,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:40,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1306613477, now seen corresponding path program 2 times [2023-01-27 20:05:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:40,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832913285] [2023-01-27 20:05:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:40,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-27 20:05:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:40,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832913285] [2023-01-27 20:05:40,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832913285] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:40,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191912994] [2023-01-27 20:05:40,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:05:40,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:40,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:40,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:40,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:05:41,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:05:41,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:41,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:05:41,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-27 20:05:41,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:05:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-27 20:05:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191912994] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:05:41,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:05:41,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-01-27 20:05:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703633828] [2023-01-27 20:05:41,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:05:41,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 20:05:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 20:05:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:05:41,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 676 [2023-01-27 20:05:41,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 198 flow. Second operand has 17 states, 17 states have (on average 263.5882352941176) internal successors, (4481), 17 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:41,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:41,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 676 [2023-01-27 20:05:41,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:41,862 INFO L130 PetriNetUnfolder]: 658/978 cut-off events. [2023-01-27 20:05:41,862 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2023-01-27 20:05:41,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 978 events. 658/978 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3195 event pairs, 477 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 2057. Up to 964 conditions per place. [2023-01-27 20:05:41,867 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 28 selfloop transitions, 18 changer transitions 0/46 dead transitions. [2023-01-27 20:05:41,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 308 flow [2023-01-27 20:05:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:05:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:05:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1875 transitions. [2023-01-27 20:05:41,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962383770076078 [2023-01-27 20:05:41,890 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1875 transitions. [2023-01-27 20:05:41,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1875 transitions. [2023-01-27 20:05:41,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:41,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1875 transitions. [2023-01-27 20:05:41,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:41,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 676.0) internal successors, (5408), 8 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:41,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 676.0) internal successors, (5408), 8 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:41,924 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 198 flow. Second operand 7 states and 1875 transitions. [2023-01-27 20:05:41,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 308 flow [2023-01-27 20:05:41,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 284 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-27 20:05:41,953 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 242 flow [2023-01-27 20:05:41,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-01-27 20:05:41,954 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-01-27 20:05:41,954 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 242 flow [2023-01-27 20:05:41,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 263.5882352941176) internal successors, (4481), 17 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:41,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:41,962 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:41,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 20:05:42,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 20:05:42,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:42,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash 8528152, now seen corresponding path program 3 times [2023-01-27 20:05:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:42,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565176278] [2023-01-27 20:05:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:05:42,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:42,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565176278] [2023-01-27 20:05:42,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565176278] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:42,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097780059] [2023-01-27 20:05:42,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:05:42,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:42,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:42,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:43,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:05:43,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:05:43,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:43,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 20:05:43,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:05:43,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:05:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097780059] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:43,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:05:43,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:05:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498274764] [2023-01-27 20:05:43,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:05:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:05:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:05:43,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 676 [2023-01-27 20:05:43,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:43,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:43,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 676 [2023-01-27 20:05:43,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:44,085 INFO L130 PetriNetUnfolder]: 1407/2064 cut-off events. [2023-01-27 20:05:44,085 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2023-01-27 20:05:44,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 2064 events. 1407/2064 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8510 event pairs, 477 based on Foata normal form. 1/1561 useless extension candidates. Maximal degree in co-relation 4365. Up to 1015 conditions per place. [2023-01-27 20:05:44,091 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 76 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2023-01-27 20:05:44,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 82 transitions, 499 flow [2023-01-27 20:05:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:05:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:05:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1141 transitions. [2023-01-27 20:05:44,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219674556213018 [2023-01-27 20:05:44,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1141 transitions. [2023-01-27 20:05:44,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1141 transitions. [2023-01-27 20:05:44,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:44,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1141 transitions. [2023-01-27 20:05:44,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:44,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:44,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:44,113 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 242 flow. Second operand 4 states and 1141 transitions. [2023-01-27 20:05:44,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 82 transitions, 499 flow [2023-01-27 20:05:44,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 463 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 20:05:44,120 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 239 flow [2023-01-27 20:05:44,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2023-01-27 20:05:44,140 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-01-27 20:05:44,140 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 239 flow [2023-01-27 20:05:44,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:44,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:44,141 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:44,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:44,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:44,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:44,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2105961796, now seen corresponding path program 4 times [2023-01-27 20:05:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259195061] [2023-01-27 20:05:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:44,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:05:44,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:44,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259195061] [2023-01-27 20:05:44,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259195061] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:44,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367246983] [2023-01-27 20:05:44,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:05:44,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:44,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:45,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:05:45,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:05:45,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:45,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 20:05:45,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:45,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:05:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367246983] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:45,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:05:45,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:05:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491559377] [2023-01-27 20:05:45,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:45,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:05:45,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:05:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:05:45,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 676 [2023-01-27 20:05:45,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:45,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:45,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 676 [2023-01-27 20:05:45,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:45,889 INFO L130 PetriNetUnfolder]: 2025/2955 cut-off events. [2023-01-27 20:05:45,889 INFO L131 PetriNetUnfolder]: For 1137/1137 co-relation queries the response was YES. [2023-01-27 20:05:45,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 2955 events. 2025/2955 cut-off events. For 1137/1137 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12771 event pairs, 820 based on Foata normal form. 1/2516 useless extension candidates. Maximal degree in co-relation 7299. Up to 1739 conditions per place. [2023-01-27 20:05:45,900 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 76 selfloop transitions, 7 changer transitions 1/84 dead transitions. [2023-01-27 20:05:45,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 509 flow [2023-01-27 20:05:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:05:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:05:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2023-01-27 20:05:45,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42122781065088755 [2023-01-27 20:05:45,920 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2023-01-27 20:05:45,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2023-01-27 20:05:45,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:45,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2023-01-27 20:05:45,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:45,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:45,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:45,933 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 239 flow. Second operand 4 states and 1139 transitions. [2023-01-27 20:05:45,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 509 flow [2023-01-27 20:05:45,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 509 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 20:05:45,937 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 288 flow [2023-01-27 20:05:45,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-01-27 20:05:45,939 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-01-27 20:05:45,939 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 288 flow [2023-01-27 20:05:45,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:45,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:45,940 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:45,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:46,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:46,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:46,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1019027948, now seen corresponding path program 1 times [2023-01-27 20:05:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:46,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546489796] [2023-01-27 20:05:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:46,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546489796] [2023-01-27 20:05:46,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546489796] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271141132] [2023-01-27 20:05:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:46,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:46,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:46,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:46,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:05:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:46,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:05:46,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:46,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:05:46,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271141132] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:46,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:05:46,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:05:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236760164] [2023-01-27 20:05:46,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:46,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:05:46,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:05:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:05:46,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:05:46,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:46,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:46,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:05:46,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:47,639 INFO L130 PetriNetUnfolder]: 2197/3199 cut-off events. [2023-01-27 20:05:47,639 INFO L131 PetriNetUnfolder]: For 2563/2563 co-relation queries the response was YES. [2023-01-27 20:05:47,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9024 conditions, 3199 events. 2197/3199 cut-off events. For 2563/2563 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14135 event pairs, 382 based on Foata normal form. 0/2743 useless extension candidates. Maximal degree in co-relation 8926. Up to 1217 conditions per place. [2023-01-27 20:05:47,670 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 88 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2023-01-27 20:05:47,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 621 flow [2023-01-27 20:05:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:05:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:05:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1457 transitions. [2023-01-27 20:05:47,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43106508875739646 [2023-01-27 20:05:47,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1457 transitions. [2023-01-27 20:05:47,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1457 transitions. [2023-01-27 20:05:47,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:47,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1457 transitions. [2023-01-27 20:05:47,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:47,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:47,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:47,701 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 288 flow. Second operand 5 states and 1457 transitions. [2023-01-27 20:05:47,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 97 transitions, 621 flow [2023-01-27 20:05:47,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 619 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 20:05:47,717 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 333 flow [2023-01-27 20:05:47,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-01-27 20:05:47,718 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-01-27 20:05:47,719 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 333 flow [2023-01-27 20:05:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:47,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:47,722 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:47,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:47,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:47,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash -673776660, now seen corresponding path program 2 times [2023-01-27 20:05:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:47,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580162558] [2023-01-27 20:05:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:47,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:48,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580162558] [2023-01-27 20:05:48,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580162558] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212293860] [2023-01-27 20:05:48,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:05:48,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:48,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:48,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:48,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:05:48,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:05:48,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:48,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:05:48,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:05:49,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:05:49,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212293860] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:49,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:05:49,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:05:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949014399] [2023-01-27 20:05:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:49,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:05:49,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:05:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:05:49,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:05:49,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:49,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:49,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:05:49,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:49,648 INFO L130 PetriNetUnfolder]: 2233/3281 cut-off events. [2023-01-27 20:05:49,648 INFO L131 PetriNetUnfolder]: For 5247/5247 co-relation queries the response was YES. [2023-01-27 20:05:49,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 3281 events. 2233/3281 cut-off events. For 5247/5247 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15022 event pairs, 777 based on Foata normal form. 22/3083 useless extension candidates. Maximal degree in co-relation 9860. Up to 1558 conditions per place. [2023-01-27 20:05:49,672 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 78 selfloop transitions, 8 changer transitions 15/101 dead transitions. [2023-01-27 20:05:49,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 693 flow [2023-01-27 20:05:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:05:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:05:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1458 transitions. [2023-01-27 20:05:49,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43136094674556213 [2023-01-27 20:05:49,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1458 transitions. [2023-01-27 20:05:49,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1458 transitions. [2023-01-27 20:05:49,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:49,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1458 transitions. [2023-01-27 20:05:49,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:49,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:49,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:49,682 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 333 flow. Second operand 5 states and 1458 transitions. [2023-01-27 20:05:49,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 693 flow [2023-01-27 20:05:49,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 676 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:05:49,697 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 355 flow [2023-01-27 20:05:49,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-01-27 20:05:49,699 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2023-01-27 20:05:49,699 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 355 flow [2023-01-27 20:05:49,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:49,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:49,700 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:49,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:49,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:49,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:49,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:49,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1334638094, now seen corresponding path program 3 times [2023-01-27 20:05:49,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:49,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008742328] [2023-01-27 20:05:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:49,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008742328] [2023-01-27 20:05:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008742328] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555218772] [2023-01-27 20:05:50,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:05:50,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:50,513 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:50,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:05:50,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:05:50,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:50,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:05:50,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:51,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:05:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:51,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555218772] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:51,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:05:51,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-01-27 20:05:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370397117] [2023-01-27 20:05:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:51,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:05:51,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:05:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:05:51,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:05:51,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:51,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:51,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:05:51,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:51,801 INFO L130 PetriNetUnfolder]: 2319/3404 cut-off events. [2023-01-27 20:05:51,801 INFO L131 PetriNetUnfolder]: For 6348/6348 co-relation queries the response was YES. [2023-01-27 20:05:51,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 3404 events. 2319/3404 cut-off events. For 6348/6348 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15599 event pairs, 558 based on Foata normal form. 36/3212 useless extension candidates. Maximal degree in co-relation 10862. Up to 1211 conditions per place. [2023-01-27 20:05:51,878 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 96 selfloop transitions, 13 changer transitions 1/110 dead transitions. [2023-01-27 20:05:51,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 773 flow [2023-01-27 20:05:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:05:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:05:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1465 transitions. [2023-01-27 20:05:51,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334319526627219 [2023-01-27 20:05:51,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1465 transitions. [2023-01-27 20:05:51,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1465 transitions. [2023-01-27 20:05:51,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:51,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1465 transitions. [2023-01-27 20:05:51,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:51,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:51,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:51,896 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 355 flow. Second operand 5 states and 1465 transitions. [2023-01-27 20:05:51,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 773 flow [2023-01-27 20:05:51,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 760 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 20:05:51,922 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 423 flow [2023-01-27 20:05:51,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-01-27 20:05:51,929 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2023-01-27 20:05:51,929 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 423 flow [2023-01-27 20:05:51,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:51,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:51,930 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:51,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:52,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:52,134 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:52,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash -991347606, now seen corresponding path program 4 times [2023-01-27 20:05:52,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:52,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039726806] [2023-01-27 20:05:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039726806] [2023-01-27 20:05:52,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039726806] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31542156] [2023-01-27 20:05:52,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:05:52,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:52,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:52,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:52,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:05:52,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:05:52,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:52,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:05:52,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:52,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:05:52,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31542156] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:52,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:05:52,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:05:52,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946296828] [2023-01-27 20:05:52,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:52,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:05:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:05:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:05:52,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:05:52,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 423 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:52,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:52,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:05:52,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:53,687 INFO L130 PetriNetUnfolder]: 2239/3277 cut-off events. [2023-01-27 20:05:53,687 INFO L131 PetriNetUnfolder]: For 7915/7915 co-relation queries the response was YES. [2023-01-27 20:05:53,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11612 conditions, 3277 events. 2239/3277 cut-off events. For 7915/7915 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14785 event pairs, 749 based on Foata normal form. 22/3079 useless extension candidates. Maximal degree in co-relation 11505. Up to 1558 conditions per place. [2023-01-27 20:05:53,705 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 76 selfloop transitions, 11 changer transitions 13/100 dead transitions. [2023-01-27 20:05:53,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 743 flow [2023-01-27 20:05:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:05:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:05:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1458 transitions. [2023-01-27 20:05:53,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43136094674556213 [2023-01-27 20:05:53,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1458 transitions. [2023-01-27 20:05:53,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1458 transitions. [2023-01-27 20:05:53,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:53,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1458 transitions. [2023-01-27 20:05:53,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:53,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:53,718 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:53,718 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 423 flow. Second operand 5 states and 1458 transitions. [2023-01-27 20:05:53,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 743 flow [2023-01-27 20:05:53,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 743 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 20:05:53,735 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 452 flow [2023-01-27 20:05:53,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-01-27 20:05:53,736 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2023-01-27 20:05:53,736 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 452 flow [2023-01-27 20:05:53,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:53,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:53,736 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:53,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:53,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-27 20:05:53,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:53,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1221850100, now seen corresponding path program 5 times [2023-01-27 20:05:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996502626] [2023-01-27 20:05:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:53,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:54,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:54,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996502626] [2023-01-27 20:05:54,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996502626] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:54,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882676878] [2023-01-27 20:05:54,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:05:54,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:54,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:54,433 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:54,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 20:05:55,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:05:55,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:55,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:05:55,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:55,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:05:55,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882676878] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:55,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:05:55,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:05:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596792491] [2023-01-27 20:05:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:05:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:05:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:05:55,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:05:55,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:55,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:55,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:05:55,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:56,019 INFO L130 PetriNetUnfolder]: 2145/3137 cut-off events. [2023-01-27 20:05:56,019 INFO L131 PetriNetUnfolder]: For 10229/10229 co-relation queries the response was YES. [2023-01-27 20:05:56,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 3137 events. 2145/3137 cut-off events. For 10229/10229 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13883 event pairs, 922 based on Foata normal form. 22/2947 useless extension candidates. Maximal degree in co-relation 11531. Up to 2061 conditions per place. [2023-01-27 20:05:56,039 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 79 selfloop transitions, 9 changer transitions 13/101 dead transitions. [2023-01-27 20:05:56,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 787 flow [2023-01-27 20:05:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:05:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:05:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-01-27 20:05:56,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-01-27 20:05:56,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-01-27 20:05:56,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-01-27 20:05:56,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:56,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-01-27 20:05:56,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:56,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:56,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:56,068 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 452 flow. Second operand 5 states and 1456 transitions. [2023-01-27 20:05:56,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 787 flow [2023-01-27 20:05:56,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 759 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 20:05:56,101 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 449 flow [2023-01-27 20:05:56,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-01-27 20:05:56,102 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-01-27 20:05:56,102 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 449 flow [2023-01-27 20:05:56,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:56,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:56,102 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:56,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:56,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:56,313 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:56,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1105708102, now seen corresponding path program 6 times [2023-01-27 20:05:56,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:56,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497513203] [2023-01-27 20:05:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:56,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:56,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:56,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497513203] [2023-01-27 20:05:56,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497513203] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:56,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696797258] [2023-01-27 20:05:56,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:05:56,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:56,917 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:56,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 20:05:57,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:05:57,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:05:57,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:05:57,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:57,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:05:57,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696797258] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:05:57,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:05:57,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:05:57,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088102681] [2023-01-27 20:05:57,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:57,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:05:57,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:05:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:05:57,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:05:57,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:57,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:57,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:05:57,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:05:58,216 INFO L130 PetriNetUnfolder]: 2065/3000 cut-off events. [2023-01-27 20:05:58,216 INFO L131 PetriNetUnfolder]: For 9864/9864 co-relation queries the response was YES. [2023-01-27 20:05:58,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11300 conditions, 3000 events. 2065/3000 cut-off events. For 9864/9864 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12975 event pairs, 826 based on Foata normal form. 36/2832 useless extension candidates. Maximal degree in co-relation 11190. Up to 1798 conditions per place. [2023-01-27 20:05:58,275 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 97 selfloop transitions, 12 changer transitions 1/110 dead transitions. [2023-01-27 20:05:58,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 841 flow [2023-01-27 20:05:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:05:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:05:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1741 transitions. [2023-01-27 20:05:58,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292406311637081 [2023-01-27 20:05:58,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1741 transitions. [2023-01-27 20:05:58,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1741 transitions. [2023-01-27 20:05:58,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:05:58,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1741 transitions. [2023-01-27 20:05:58,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:58,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:58,299 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:58,299 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 449 flow. Second operand 6 states and 1741 transitions. [2023-01-27 20:05:58,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 841 flow [2023-01-27 20:05:58,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 813 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 20:05:58,344 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 475 flow [2023-01-27 20:05:58,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-01-27 20:05:58,345 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-01-27 20:05:58,345 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 475 flow [2023-01-27 20:05:58,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:58,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:05:58,346 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:05:58,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 20:05:58,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-27 20:05:58,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:05:58,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:05:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1050703873, now seen corresponding path program 1 times [2023-01-27 20:05:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:05:58,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363592968] [2023-01-27 20:05:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:58,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:05:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:05:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:05:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363592968] [2023-01-27 20:05:59,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363592968] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517852920] [2023-01-27 20:05:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:05:59,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:05:59,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:05:59,084 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:05:59,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 20:05:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:05:59,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:05:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:05:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:05:59,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:05:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:05:59,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517852920] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:05:59,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:05:59,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 10 [2023-01-27 20:05:59,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268858609] [2023-01-27 20:05:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:05:59,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:05:59,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:05:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:05:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:05:59,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:05:59,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 475 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:05:59,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:05:59,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:05:59,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:00,297 INFO L130 PetriNetUnfolder]: 2188/3163 cut-off events. [2023-01-27 20:06:00,298 INFO L131 PetriNetUnfolder]: For 9105/9105 co-relation queries the response was YES. [2023-01-27 20:06:00,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12221 conditions, 3163 events. 2188/3163 cut-off events. For 9105/9105 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14004 event pairs, 180 based on Foata normal form. 76/3027 useless extension candidates. Maximal degree in co-relation 12109. Up to 2033 conditions per place. [2023-01-27 20:06:00,321 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 93 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2023-01-27 20:06:00,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 857 flow [2023-01-27 20:06:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:06:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:06:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1454 transitions. [2023-01-27 20:06:00,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301775147928994 [2023-01-27 20:06:00,324 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1454 transitions. [2023-01-27 20:06:00,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1454 transitions. [2023-01-27 20:06:00,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:00,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1454 transitions. [2023-01-27 20:06:00,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.8) internal successors, (1454), 5 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:00,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:00,338 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:00,338 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 475 flow. Second operand 5 states and 1454 transitions. [2023-01-27 20:06:00,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 857 flow [2023-01-27 20:06:00,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 106 transitions, 790 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-01-27 20:06:00,376 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 499 flow [2023-01-27 20:06:00,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-01-27 20:06:00,377 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-01-27 20:06:00,377 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 499 flow [2023-01-27 20:06:00,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:00,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:00,377 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:00,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:00,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-27 20:06:00,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:00,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash 80380509, now seen corresponding path program 2 times [2023-01-27 20:06:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:00,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678694767] [2023-01-27 20:06:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678694767] [2023-01-27 20:06:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678694767] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414069220] [2023-01-27 20:06:01,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:06:01,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:01,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:01,014 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:01,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 20:06:01,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:06:01,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:06:01,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:06:01,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:01,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:06:01,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414069220] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:06:01,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:06:01,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:06:01,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907898054] [2023-01-27 20:06:01,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:06:01,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:06:01,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:06:01,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:06:01,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:06:01,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:01,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:01,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:06:01,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:02,298 INFO L130 PetriNetUnfolder]: 2170/3145 cut-off events. [2023-01-27 20:06:02,298 INFO L131 PetriNetUnfolder]: For 9206/9206 co-relation queries the response was YES. [2023-01-27 20:06:02,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12062 conditions, 3145 events. 2170/3145 cut-off events. For 9206/9206 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13915 event pairs, 752 based on Foata normal form. 18/2951 useless extension candidates. Maximal degree in co-relation 11951. Up to 1803 conditions per place. [2023-01-27 20:06:02,315 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 82 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2023-01-27 20:06:02,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 787 flow [2023-01-27 20:06:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:06:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:06:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1449 transitions. [2023-01-27 20:06:02,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428698224852071 [2023-01-27 20:06:02,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1449 transitions. [2023-01-27 20:06:02,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1449 transitions. [2023-01-27 20:06:02,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:02,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1449 transitions. [2023-01-27 20:06:02,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:02,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:02,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:02,344 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 499 flow. Second operand 5 states and 1449 transitions. [2023-01-27 20:06:02,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 787 flow [2023-01-27 20:06:02,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 768 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 20:06:02,368 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 535 flow [2023-01-27 20:06:02,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-01-27 20:06:02,368 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2023-01-27 20:06:02,380 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 535 flow [2023-01-27 20:06:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:02,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:02,380 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:02,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-27 20:06:02,589 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:02,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash 370126421, now seen corresponding path program 3 times [2023-01-27 20:06:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114787167] [2023-01-27 20:06:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:02,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:03,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:03,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114787167] [2023-01-27 20:06:03,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114787167] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:03,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778771694] [2023-01-27 20:06:03,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:06:03,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:03,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:03,038 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:03,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 20:06:03,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:06:03,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:06:03,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:06:03,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:03,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:06:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778771694] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:06:03,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:06:03,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:06:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472539116] [2023-01-27 20:06:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:06:03,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:06:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:06:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:06:03,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:06:03,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:03,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:03,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:06:03,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:04,231 INFO L130 PetriNetUnfolder]: 2260/3275 cut-off events. [2023-01-27 20:06:04,231 INFO L131 PetriNetUnfolder]: For 10263/10263 co-relation queries the response was YES. [2023-01-27 20:06:04,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13182 conditions, 3275 events. 2260/3275 cut-off events. For 10263/10263 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14490 event pairs, 770 based on Foata normal form. 76/3131 useless extension candidates. Maximal degree in co-relation 13070. Up to 1825 conditions per place. [2023-01-27 20:06:04,264 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 94 selfloop transitions, 16 changer transitions 1/111 dead transitions. [2023-01-27 20:06:04,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 894 flow [2023-01-27 20:06:04,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:06:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:06:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1741 transitions. [2023-01-27 20:06:04,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292406311637081 [2023-01-27 20:06:04,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1741 transitions. [2023-01-27 20:06:04,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1741 transitions. [2023-01-27 20:06:04,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:04,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1741 transitions. [2023-01-27 20:06:04,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:04,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:04,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:04,275 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 535 flow. Second operand 6 states and 1741 transitions. [2023-01-27 20:06:04,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 894 flow [2023-01-27 20:06:04,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 862 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 20:06:04,306 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 544 flow [2023-01-27 20:06:04,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-01-27 20:06:04,307 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-01-27 20:06:04,307 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 544 flow [2023-01-27 20:06:04,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:04,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:04,307 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:04,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:04,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 20:06:04,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:04,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:04,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1112195801, now seen corresponding path program 4 times [2023-01-27 20:06:04,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:04,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735962619] [2023-01-27 20:06:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:04,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735962619] [2023-01-27 20:06:04,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735962619] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672202173] [2023-01-27 20:06:04,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:06:04,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:04,917 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:04,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 20:06:05,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:06:05,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:06:05,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:06:05,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:05,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:06:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672202173] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:06:05,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:06:05,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:06:05,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886992112] [2023-01-27 20:06:05,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:06:05,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:06:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:06:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:06:05,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:06:05,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:05,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:05,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:06:05,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:05,969 INFO L130 PetriNetUnfolder]: 2242/3257 cut-off events. [2023-01-27 20:06:05,969 INFO L131 PetriNetUnfolder]: For 12776/12776 co-relation queries the response was YES. [2023-01-27 20:06:05,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13563 conditions, 3257 events. 2242/3257 cut-off events. For 12776/12776 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14440 event pairs, 847 based on Foata normal form. 18/3055 useless extension candidates. Maximal degree in co-relation 13450. Up to 2087 conditions per place. [2023-01-27 20:06:05,995 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 87 selfloop transitions, 13 changer transitions 9/109 dead transitions. [2023-01-27 20:06:05,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 924 flow [2023-01-27 20:06:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:06:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:06:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2023-01-27 20:06:05,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298816568047337 [2023-01-27 20:06:05,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2023-01-27 20:06:05,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2023-01-27 20:06:05,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:05,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2023-01-27 20:06:06,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:06,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:06,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:06,006 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 544 flow. Second operand 5 states and 1453 transitions. [2023-01-27 20:06:06,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 924 flow [2023-01-27 20:06:06,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 877 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-27 20:06:06,032 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 555 flow [2023-01-27 20:06:06,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=555, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2023-01-27 20:06:06,049 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2023-01-27 20:06:06,049 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 555 flow [2023-01-27 20:06:06,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:06,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:06,049 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:06,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:06,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:06,250 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:06,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash -293042749, now seen corresponding path program 5 times [2023-01-27 20:06:06,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818328542] [2023-01-27 20:06:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:06,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:06,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818328542] [2023-01-27 20:06:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818328542] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274905217] [2023-01-27 20:06:06,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:06:06,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:06,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:06,621 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:06,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 20:06:06,995 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:06:06,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:06:07,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:06:07,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:07,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:06:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274905217] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:06:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-01-27 20:06:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414627427] [2023-01-27 20:06:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:06:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:06:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:06:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:06:07,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:06:07,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:07,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:07,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:06:07,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:07,806 INFO L130 PetriNetUnfolder]: 2141/3138 cut-off events. [2023-01-27 20:06:07,806 INFO L131 PetriNetUnfolder]: For 13140/13140 co-relation queries the response was YES. [2023-01-27 20:06:07,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13278 conditions, 3138 events. 2141/3138 cut-off events. For 13140/13140 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13910 event pairs, 847 based on Foata normal form. 76/2998 useless extension candidates. Maximal degree in co-relation 13164. Up to 2087 conditions per place. [2023-01-27 20:06:07,836 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 92 selfloop transitions, 15 changer transitions 1/108 dead transitions. [2023-01-27 20:06:07,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 913 flow [2023-01-27 20:06:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:06:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:06:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-01-27 20:06:07,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-01-27 20:06:07,857 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-01-27 20:06:07,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-01-27 20:06:07,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:07,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-01-27 20:06:07,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:07,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:07,865 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:07,865 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 555 flow. Second operand 5 states and 1456 transitions. [2023-01-27 20:06:07,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 108 transitions, 913 flow [2023-01-27 20:06:07,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 884 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-27 20:06:07,936 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 577 flow [2023-01-27 20:06:07,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-01-27 20:06:07,945 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2023-01-27 20:06:07,945 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 577 flow [2023-01-27 20:06:07,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:07,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:07,946 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:07,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:08,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-27 20:06:08,153 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:08,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:08,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2055287147, now seen corresponding path program 6 times [2023-01-27 20:06:08,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:08,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398185702] [2023-01-27 20:06:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:08,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:08,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:08,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398185702] [2023-01-27 20:06:08,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398185702] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:08,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838886445] [2023-01-27 20:06:08,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:06:08,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:08,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:08,629 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:08,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 20:06:09,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:06:09,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:06:09,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:06:09,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:09,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:06:09,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838886445] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:06:09,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:06:09,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-27 20:06:09,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911622218] [2023-01-27 20:06:09,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:06:09,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:06:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:06:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:06:09,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-27 20:06:09,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:09,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:09,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-27 20:06:09,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:10,250 INFO L130 PetriNetUnfolder]: 2023/2941 cut-off events. [2023-01-27 20:06:10,251 INFO L131 PetriNetUnfolder]: For 10935/10935 co-relation queries the response was YES. [2023-01-27 20:06:10,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12167 conditions, 2941 events. 2023/2941 cut-off events. For 10935/10935 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12653 event pairs, 847 based on Foata normal form. 18/2759 useless extension candidates. Maximal degree in co-relation 12053. Up to 2087 conditions per place. [2023-01-27 20:06:10,300 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 76 selfloop transitions, 15 changer transitions 10/101 dead transitions. [2023-01-27 20:06:10,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 881 flow [2023-01-27 20:06:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:06:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:06:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1449 transitions. [2023-01-27 20:06:10,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428698224852071 [2023-01-27 20:06:10,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1449 transitions. [2023-01-27 20:06:10,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1449 transitions. [2023-01-27 20:06:10,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:10,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1449 transitions. [2023-01-27 20:06:10,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:10,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:10,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:10,343 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 577 flow. Second operand 5 states and 1449 transitions. [2023-01-27 20:06:10,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 881 flow [2023-01-27 20:06:10,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 859 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 20:06:10,388 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 573 flow [2023-01-27 20:06:10,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=573, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2023-01-27 20:06:10,388 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2023-01-27 20:06:10,388 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 573 flow [2023-01-27 20:06:10,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:10,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:10,389 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:10,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 20:06:10,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:10,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1707227891, now seen corresponding path program 1 times [2023-01-27 20:06:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:10,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681539915] [2023-01-27 20:06:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-01-27 20:06:11,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681539915] [2023-01-27 20:06:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681539915] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012404371] [2023-01-27 20:06:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:11,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:11,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:11,024 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:11,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 20:06:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:11,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 82 conjunts are in the unsatisfiable core [2023-01-27 20:06:11,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:12,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:06:12,042 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 [2023-01-27 20:06:12,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:06:12,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:06:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:06:12,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:06:16,781 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (.cse3 (< |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (and (or (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse1 (select (select .cse0 ~o_4~0.base) c_~o_4~0.offset)) (.cse2 (select (select .cse0 c_~o_0~0.base) c_~o_0~0.offset))) (or (<= (select (select .cse0 ~o_2~0.base) c_~o_2~0.offset) .cse1) (< .cse2 .cse1) (< .cse1 .cse2))))) .cse3) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse6 (select (select .cse7 ~o_4~0.base) c_~o_4~0.offset)) (.cse8 (select (select .cse7 c_~o_0~0.base) c_~o_0~0.offset))) (or (forall ((~o_2~0.base Int)) (let ((.cse4 (select .cse7 ~o_2~0.base))) (or (not (= (select .cse4 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (<= (select .cse4 c_~o_2~0.offset) .cse6)))) (< .cse8 .cse6) (< .cse6 .cse8))))) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse10 (select (select .cse11 ~o_4~0.base) c_~o_4~0.offset))) (or (forall ((~o_2~0.base Int)) (let ((.cse9 (select .cse11 ~o_2~0.base))) (or (not (= (select .cse9 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (< .cse10 (select .cse9 c_~o_2~0.offset))))) (<= (select (select .cse11 c_~o_0~0.base) c_~o_0~0.offset) .cse10))))) (or .cse3 (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse13 (select (select .cse12 ~o_4~0.base) c_~o_4~0.offset))) (or (<= (select (select .cse12 c_~o_0~0.base) c_~o_0~0.offset) .cse13) (< .cse13 (select (select .cse12 ~o_2~0.base) c_~o_2~0.offset))))))) (or (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse14 (select (select .cse15 ~o_4~0.base) c_~o_4~0.offset))) (or (<= .cse14 (select (select .cse15 c_~o_0~0.base) c_~o_0~0.offset)) (< (select (select .cse15 ~o_2~0.base) c_~o_2~0.offset) .cse14))))) .cse3) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse16 (select (select .cse17 ~o_4~0.base) c_~o_4~0.offset))) (or (<= .cse16 (select (select .cse17 c_~o_0~0.base) c_~o_0~0.offset)) (forall ((~o_2~0.base Int)) (let ((.cse18 (select .cse17 ~o_2~0.base))) (or (not (= (select .cse18 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (< (select .cse18 c_~o_2~0.offset) .cse16)))))))) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse20 (select (select .cse21 ~o_4~0.base) c_~o_4~0.offset)) (.cse22 (select (select .cse21 c_~o_0~0.base) c_~o_0~0.offset))) (or (forall ((~o_2~0.base Int)) (let ((.cse19 (select .cse21 ~o_2~0.base))) (or (not (= (select .cse19 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (<= .cse20 (select .cse19 c_~o_2~0.offset))))) (< .cse22 .cse20) (< .cse20 .cse22))))) (or (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse23 (select (select .cse24 ~o_4~0.base) c_~o_4~0.offset)) (.cse25 (select (select .cse24 c_~o_0~0.base) c_~o_0~0.offset))) (or (<= .cse23 (select (select .cse24 ~o_2~0.base) c_~o_2~0.offset)) (< .cse25 .cse23) (< .cse23 .cse25))))) .cse3))) is different from false [2023-01-27 20:06:17,098 INFO L321 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-01-27 20:06:17,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 244 treesize of output 273 [2023-01-27 20:06:17,181 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:06:17,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 172 treesize of output 198 [2023-01-27 20:06:25,077 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 20:06:25,083 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-27 20:06:25,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 1 [2023-01-27 20:06:25,086 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 20:06:25,101 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-27 20:06:25,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 1 [2023-01-27 20:06:25,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 20:06:25,117 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-27 20:06:25,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 1 [2023-01-27 20:06:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:06:25,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012404371] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:06:25,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:06:25,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 16, 14] total 34 [2023-01-27 20:06:25,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978388317] [2023-01-27 20:06:25,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:06:25,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-27 20:06:25,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:25,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-27 20:06:25,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1005, Unknown=1, NotChecked=64, Total=1190 [2023-01-27 20:06:25,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 676 [2023-01-27 20:06:25,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 573 flow. Second operand has 35 states, 35 states have (on average 223.57142857142858) internal successors, (7825), 35 states have internal predecessors, (7825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:25,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:25,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 676 [2023-01-27 20:06:25,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:31,351 INFO L130 PetriNetUnfolder]: 3918/5639 cut-off events. [2023-01-27 20:06:31,352 INFO L131 PetriNetUnfolder]: For 25606/25606 co-relation queries the response was YES. [2023-01-27 20:06:31,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23438 conditions, 5639 events. 3918/5639 cut-off events. For 25606/25606 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27801 event pairs, 749 based on Foata normal form. 2/5273 useless extension candidates. Maximal degree in co-relation 23323. Up to 1655 conditions per place. [2023-01-27 20:06:31,386 INFO L137 encePairwiseOnDemand]: 660/676 looper letters, 219 selfloop transitions, 55 changer transitions 114/388 dead transitions. [2023-01-27 20:06:31,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 388 transitions, 4182 flow [2023-01-27 20:06:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:06:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:06:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5063 transitions. [2023-01-27 20:06:31,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34043840774610007 [2023-01-27 20:06:31,422 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5063 transitions. [2023-01-27 20:06:31,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5063 transitions. [2023-01-27 20:06:31,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:31,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5063 transitions. [2023-01-27 20:06:31,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 230.13636363636363) internal successors, (5063), 22 states have internal predecessors, (5063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:31,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 676.0) internal successors, (15548), 23 states have internal predecessors, (15548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:31,489 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 676.0) internal successors, (15548), 23 states have internal predecessors, (15548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:31,489 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 573 flow. Second operand 22 states and 5063 transitions. [2023-01-27 20:06:31,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 388 transitions, 4182 flow [2023-01-27 20:06:31,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 388 transitions, 3752 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-01-27 20:06:31,529 INFO L231 Difference]: Finished difference. Result has 115 places, 121 transitions, 1297 flow [2023-01-27 20:06:31,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1297, PETRI_PLACES=115, PETRI_TRANSITIONS=121} [2023-01-27 20:06:31,529 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 81 predicate places. [2023-01-27 20:06:31,529 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 121 transitions, 1297 flow [2023-01-27 20:06:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 223.57142857142858) internal successors, (7825), 35 states have internal predecessors, (7825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:31,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:31,541 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:31,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:31,748 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:31,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash 361103584, now seen corresponding path program 2 times [2023-01-27 20:06:31,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:31,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792312182] [2023-01-27 20:06:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:31,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:06:32,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:32,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792312182] [2023-01-27 20:06:32,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792312182] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:32,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485923234] [2023-01-27 20:06:32,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:06:32,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:32,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:32,064 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:32,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 20:06:32,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:06:32,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:06:32,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-27 20:06:32,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:06:33,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:06:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:06:34,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485923234] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:06:34,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:06:34,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 10] total 24 [2023-01-27 20:06:34,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321192696] [2023-01-27 20:06:34,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:06:34,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 20:06:34,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 20:06:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-01-27 20:06:34,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 676 [2023-01-27 20:06:34,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 1297 flow. Second operand has 25 states, 25 states have (on average 256.08) internal successors, (6402), 25 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:34,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:34,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 676 [2023-01-27 20:06:34,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:06:41,407 INFO L130 PetriNetUnfolder]: 9070/13068 cut-off events. [2023-01-27 20:06:41,407 INFO L131 PetriNetUnfolder]: For 124535/124535 co-relation queries the response was YES. [2023-01-27 20:06:41,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75424 conditions, 13068 events. 9070/13068 cut-off events. For 124535/124535 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 70112 event pairs, 731 based on Foata normal form. 9/13077 useless extension candidates. Maximal degree in co-relation 75374. Up to 3195 conditions per place. [2023-01-27 20:06:41,590 INFO L137 encePairwiseOnDemand]: 661/676 looper letters, 325 selfloop transitions, 267 changer transitions 369/961 dead transitions. [2023-01-27 20:06:41,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 961 transitions, 12493 flow [2023-01-27 20:06:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-01-27 20:06:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-01-27 20:06:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 13413 transitions. [2023-01-27 20:06:41,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890532544378698 [2023-01-27 20:06:41,611 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 13413 transitions. [2023-01-27 20:06:41,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 13413 transitions. [2023-01-27 20:06:41,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:06:41,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 13413 transitions. [2023-01-27 20:06:41,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 263.0) internal successors, (13413), 51 states have internal predecessors, (13413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:41,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 676.0) internal successors, (35152), 52 states have internal predecessors, (35152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:41,646 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 676.0) internal successors, (35152), 52 states have internal predecessors, (35152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:41,646 INFO L175 Difference]: Start difference. First operand has 115 places, 121 transitions, 1297 flow. Second operand 51 states and 13413 transitions. [2023-01-27 20:06:41,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 961 transitions, 12493 flow [2023-01-27 20:06:42,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 961 transitions, 11350 flow, removed 559 selfloop flow, removed 8 redundant places. [2023-01-27 20:06:42,131 INFO L231 Difference]: Finished difference. Result has 192 places, 388 transitions, 5981 flow [2023-01-27 20:06:42,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5981, PETRI_PLACES=192, PETRI_TRANSITIONS=388} [2023-01-27 20:06:42,131 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 158 predicate places. [2023-01-27 20:06:42,131 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 388 transitions, 5981 flow [2023-01-27 20:06:42,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 256.08) internal successors, (6402), 25 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:42,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:06:42,132 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:06:42,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-27 20:06:42,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:42,345 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:06:42,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:06:42,345 INFO L85 PathProgramCache]: Analyzing trace with hash -489564831, now seen corresponding path program 3 times [2023-01-27 20:06:42,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:06:42,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810999302] [2023-01-27 20:06:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:06:42,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:06:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:06:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-01-27 20:06:45,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:06:45,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810999302] [2023-01-27 20:06:45,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810999302] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:06:45,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750428198] [2023-01-27 20:06:45,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:06:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:06:45,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:06:45,863 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:06:45,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 20:06:46,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-27 20:06:46,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:06:46,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 85 conjunts are in the unsatisfiable core [2023-01-27 20:06:46,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:06:47,952 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-27 20:06:47,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2023-01-27 20:06:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-01-27 20:06:48,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:06:51,103 INFO L321 Elim1Store]: treesize reduction 19, result has 90.7 percent of original size [2023-01-27 20:06:51,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 199 [2023-01-27 20:06:58,427 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-27 20:06:58,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 1 [2023-01-27 20:06:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-01-27 20:06:58,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750428198] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:06:58,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:06:58,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 14] total 39 [2023-01-27 20:06:58,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129798280] [2023-01-27 20:06:58,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:06:58,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-27 20:06:58,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:06:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-27 20:06:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2023-01-27 20:06:58,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 676 [2023-01-27 20:06:58,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 388 transitions, 5981 flow. Second operand has 40 states, 40 states have (on average 225.075) internal successors, (9003), 40 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:06:58,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:06:58,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 676 [2023-01-27 20:06:58,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:07:42,743 INFO L130 PetriNetUnfolder]: 15096/21763 cut-off events. [2023-01-27 20:07:42,743 INFO L131 PetriNetUnfolder]: For 437570/437570 co-relation queries the response was YES. [2023-01-27 20:07:43,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169243 conditions, 21763 events. 15096/21763 cut-off events. For 437570/437570 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 124707 event pairs, 1042 based on Foata normal form. 45/21808 useless extension candidates. Maximal degree in co-relation 169103. Up to 6203 conditions per place. [2023-01-27 20:07:43,198 INFO L137 encePairwiseOnDemand]: 658/676 looper letters, 648 selfloop transitions, 844 changer transitions 253/1745 dead transitions. [2023-01-27 20:07:43,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1745 transitions, 27640 flow [2023-01-27 20:07:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-01-27 20:07:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-01-27 20:07:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 21489 transitions. [2023-01-27 20:07:43,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34181141439205953 [2023-01-27 20:07:43,254 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 21489 transitions. [2023-01-27 20:07:43,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 21489 transitions. [2023-01-27 20:07:43,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:07:43,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 21489 transitions. [2023-01-27 20:07:43,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 231.06451612903226) internal successors, (21489), 93 states have internal predecessors, (21489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:07:43,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 676.0) internal successors, (63544), 94 states have internal predecessors, (63544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:07:43,444 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 676.0) internal successors, (63544), 94 states have internal predecessors, (63544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:07:43,444 INFO L175 Difference]: Start difference. First operand has 192 places, 388 transitions, 5981 flow. Second operand 93 states and 21489 transitions. [2023-01-27 20:07:43,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1745 transitions, 27640 flow [2023-01-27 20:07:48,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 1745 transitions, 24299 flow, removed 1665 selfloop flow, removed 24 redundant places. [2023-01-27 20:07:48,600 INFO L231 Difference]: Finished difference. Result has 285 places, 1104 transitions, 17571 flow [2023-01-27 20:07:48,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=17571, PETRI_PLACES=285, PETRI_TRANSITIONS=1104} [2023-01-27 20:07:48,601 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 251 predicate places. [2023-01-27 20:07:48,601 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 1104 transitions, 17571 flow [2023-01-27 20:07:48,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 225.075) internal successors, (9003), 40 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:07:48,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:07:48,604 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:07:48,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 20:07:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:07:48,812 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:07:48,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:07:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -541040723, now seen corresponding path program 4 times [2023-01-27 20:07:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:07:48,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214900656] [2023-01-27 20:07:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:07:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:07:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:07:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-01-27 20:07:53,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:07:53,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214900656] [2023-01-27 20:07:53,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214900656] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:07:53,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195595137] [2023-01-27 20:07:53,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:07:53,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:07:53,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:07:53,510 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:07:53,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 20:07:53,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:07:53,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:07:53,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 84 conjunts are in the unsatisfiable core [2023-01-27 20:07:53,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:07:54,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:07:54,212 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 [2023-01-27 20:07:54,973 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 20:07:54,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-01-27 20:07:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-01-27 20:07:55,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:07:57,445 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))) (and (forall ((v_ArrVal_2156 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2156))) (let ((.cse4 (select .cse3 ~o_2~0.base))) (or (forall ((~o_4~0.base Int)) (let ((.cse0 (select .cse4 c_~o_2~0.offset)) (.cse1 (select (select .cse3 ~o_4~0.base) c_~o_4~0.offset)) (.cse2 (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset))) (or (= .cse0 .cse1) (= .cse2 .cse1) (< .cse0 .cse1) (< .cse1 .cse2)))) (not (= (select .cse4 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)))))) (forall ((v_ArrVal_2156 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2156))) (let ((.cse6 (select .cse9 ~o_2~0.base))) (or (not (= (select .cse6 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (forall ((~o_4~0.base Int)) (let ((.cse7 (select .cse6 c_~o_2~0.offset)) (.cse8 (select (select .cse9 ~o_4~0.base) c_~o_4~0.offset))) (or (= .cse7 .cse8) (< .cse8 .cse7) (<= (select (select .cse9 c_~o_0~0.base) c_~o_0~0.offset) .cse8)))))))))) is different from false [2023-01-27 20:07:57,631 INFO L321 Elim1Store]: treesize reduction 23, result has 81.0 percent of original size [2023-01-27 20:07:57,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 244 treesize of output 269 [2023-01-27 20:07:57,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:07:57,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 172 treesize of output 198 [2023-01-27 20:08:05,956 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 20:08:05,961 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-27 20:08:05,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 1 [2023-01-27 20:08:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-01-27 20:08:06,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195595137] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:08:06,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:08:06,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 14] total 48 [2023-01-27 20:08:06,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347955673] [2023-01-27 20:08:06,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:08:06,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-01-27 20:08:06,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:08:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-01-27 20:08:06,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2173, Unknown=1, NotChecked=94, Total=2450 [2023-01-27 20:08:06,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 676 [2023-01-27 20:08:06,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1104 transitions, 17571 flow. Second operand has 50 states, 50 states have (on average 200.02) internal successors, (10001), 50 states have internal predecessors, (10001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:08:06,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:08:06,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 676 [2023-01-27 20:08:06,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:08:33,645 INFO L130 PetriNetUnfolder]: 23286/33325 cut-off events. [2023-01-27 20:08:33,646 INFO L131 PetriNetUnfolder]: For 1557338/1557338 co-relation queries the response was YES. [2023-01-27 20:08:34,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342277 conditions, 33325 events. 23286/33325 cut-off events. For 1557338/1557338 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 200788 event pairs, 1080 based on Foata normal form. 24/33349 useless extension candidates. Maximal degree in co-relation 342080. Up to 9262 conditions per place. [2023-01-27 20:08:34,711 INFO L137 encePairwiseOnDemand]: 655/676 looper letters, 1351 selfloop transitions, 1097 changer transitions 141/2589 dead transitions. [2023-01-27 20:08:34,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 2589 transitions, 48666 flow [2023-01-27 20:08:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-01-27 20:08:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-01-27 20:08:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 11553 transitions. [2023-01-27 20:08:34,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3051827979712595 [2023-01-27 20:08:34,727 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 11553 transitions. [2023-01-27 20:08:34,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 11553 transitions. [2023-01-27 20:08:34,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:08:34,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 11553 transitions. [2023-01-27 20:08:34,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 206.30357142857142) internal successors, (11553), 56 states have internal predecessors, (11553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:08:34,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 676.0) internal successors, (38532), 57 states have internal predecessors, (38532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:08:34,799 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 676.0) internal successors, (38532), 57 states have internal predecessors, (38532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:08:34,799 INFO L175 Difference]: Start difference. First operand has 285 places, 1104 transitions, 17571 flow. Second operand 56 states and 11553 transitions. [2023-01-27 20:08:34,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 2589 transitions, 48666 flow [2023-01-27 20:08:57,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 2589 transitions, 45133 flow, removed 1696 selfloop flow, removed 10 redundant places. [2023-01-27 20:08:57,591 INFO L231 Difference]: Finished difference. Result has 353 places, 1657 transitions, 29562 flow [2023-01-27 20:08:57,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=15470, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=556, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=29562, PETRI_PLACES=353, PETRI_TRANSITIONS=1657} [2023-01-27 20:08:57,592 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 319 predicate places. [2023-01-27 20:08:57,592 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 1657 transitions, 29562 flow [2023-01-27 20:08:57,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 200.02) internal successors, (10001), 50 states have internal predecessors, (10001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:08:57,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:08:57,594 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:08:57,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 20:08:57,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-27 20:08:57,801 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:08:57,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:08:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1981758789, now seen corresponding path program 5 times [2023-01-27 20:08:57,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:08:57,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482867621] [2023-01-27 20:08:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:08:57,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:08:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:09:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-27 20:09:04,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:09:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482867621] [2023-01-27 20:09:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482867621] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:09:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194599435] [2023-01-27 20:09:04,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:09:04,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:09:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:09:04,341 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:09:04,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-27 20:09:05,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-01-27 20:09:05,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:09:05,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 80 conjunts are in the unsatisfiable core [2023-01-27 20:09:05,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:09:05,789 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 20:09:05,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-01-27 20:09:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 20:09:05,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:09:08,360 INFO L321 Elim1Store]: treesize reduction 36, result has 70.2 percent of original size [2023-01-27 20:09:08,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 98 [2023-01-27 20:09:08,679 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-27 20:09:08,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 1 [2023-01-27 20:09:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 20:09:08,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194599435] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:09:08,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:09:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 12] total 51 [2023-01-27 20:09:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934026286] [2023-01-27 20:09:08,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:09:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-01-27 20:09:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:09:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-01-27 20:09:08,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2429, Unknown=0, NotChecked=0, Total=2652 [2023-01-27 20:09:08,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 676 [2023-01-27 20:09:08,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 1657 transitions, 29562 flow. Second operand has 52 states, 52 states have (on average 190.90384615384616) internal successors, (9927), 52 states have internal predecessors, (9927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:09:08,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:09:08,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 676 [2023-01-27 20:09:08,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:14,161 INFO L130 PetriNetUnfolder]: 155389/221984 cut-off events. [2023-01-27 20:12:14,162 INFO L131 PetriNetUnfolder]: For 12561849/12561849 co-relation queries the response was YES. [2023-01-27 20:12:22,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448562 conditions, 221984 events. 155389/221984 cut-off events. For 12561849/12561849 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 1680300 event pairs, 11732 based on Foata normal form. 88/222072 useless extension candidates. Maximal degree in co-relation 2448327. Up to 60896 conditions per place. [2023-01-27 20:12:23,944 INFO L137 encePairwiseOnDemand]: 656/676 looper letters, 6731 selfloop transitions, 8345 changer transitions 236/15312 dead transitions. [2023-01-27 20:12:23,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 15312 transitions, 320909 flow [2023-01-27 20:12:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2023-01-27 20:12:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2023-01-27 20:12:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 41028 transitions. [2023-01-27 20:12:24,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29178994082840237 [2023-01-27 20:12:24,008 INFO L72 ComplementDD]: Start complementDD. Operand 208 states and 41028 transitions. [2023-01-27 20:12:24,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 41028 transitions. [2023-01-27 20:12:24,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:24,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 208 states and 41028 transitions. [2023-01-27 20:12:24,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 209 states, 208 states have (on average 197.25) internal successors, (41028), 208 states have internal predecessors, (41028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:24,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 209 states, 209 states have (on average 676.0) internal successors, (141284), 209 states have internal predecessors, (141284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:24,319 INFO L81 ComplementDD]: Finished complementDD. Result has 209 states, 209 states have (on average 676.0) internal successors, (141284), 209 states have internal predecessors, (141284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:24,319 INFO L175 Difference]: Start difference. First operand has 353 places, 1657 transitions, 29562 flow. Second operand 208 states and 41028 transitions. [2023-01-27 20:12:24,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 15312 transitions, 320909 flow