./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 13:58:57,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 13:58:57,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 13:58:57,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 13:58:57,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 13:58:57,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 13:58:57,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 13:58:57,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 13:58:57,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 13:58:57,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 13:58:57,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 13:58:57,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 13:58:57,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 13:58:57,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 13:58:57,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 13:58:57,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 13:58:57,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 13:58:57,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 13:58:57,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 13:58:58,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 13:58:58,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 13:58:58,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 13:58:58,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 13:58:58,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 13:58:58,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 13:58:58,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 13:58:58,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 13:58:58,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 13:58:58,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 13:58:58,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 13:58:58,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 13:58:58,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 13:58:58,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 13:58:58,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 13:58:58,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 13:58:58,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 13:58:58,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 13:58:58,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 13:58:58,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 13:58:58,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 13:58:58,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 13:58:58,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 13:58:58,060 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 13:58:58,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 13:58:58,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 13:58:58,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 13:58:58,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 13:58:58,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 13:58:58,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 13:58:58,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 13:58:58,063 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 13:58:58,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 13:58:58,064 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 13:58:58,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 13:58:58,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 13:58:58,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 13:58:58,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 13:58:58,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 13:58:58,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 13:58:58,066 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 13:58:58,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 13:58:58,066 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 13:58:58,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 13:58:58,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 13:58:58,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 13:58:58,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 13:58:58,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:58:58,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 13:58:58,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 13:58:58,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 13:58:58,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 13:58:58,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 13:58:58,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 13:58:58,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 13:58:58,069 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 13:58:58,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 13:58:58,069 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 13:58:58,069 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 13:58:58,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 13:58:58,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 13:58:58,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 13:58:58,419 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 13:58:58,420 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 13:58:58,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-09-01 13:58:59,603 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 13:58:59,832 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 13:58:59,833 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-09-01 13:58:59,839 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1311d08ef/84b20b6d3db843b79805e48b7c156f78/FLAG1520133b2 [2023-09-01 13:58:59,861 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1311d08ef/84b20b6d3db843b79805e48b7c156f78 [2023-09-01 13:58:59,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 13:58:59,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 13:58:59,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 13:58:59,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 13:58:59,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 13:58:59,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:58:59" (1/1) ... [2023-09-01 13:58:59,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7ad1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:58:59, skipping insertion in model container [2023-09-01 13:58:59,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:58:59" (1/1) ... [2023-09-01 13:58:59,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 13:58:59,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 13:59:00,046 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-09-01 13:59:00,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:59:00,060 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 13:59:00,079 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-09-01 13:59:00,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:59:00,089 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:59:00,089 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:59:00,094 INFO L208 MainTranslator]: Completed translation [2023-09-01 13:59:00,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00 WrapperNode [2023-09-01 13:59:00,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 13:59:00,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 13:59:00,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 13:59:00,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 13:59:00,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,128 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-09-01 13:59:00,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 13:59:00,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 13:59:00,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 13:59:00,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 13:59:00,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 13:59:00,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 13:59:00,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 13:59:00,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 13:59:00,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (1/1) ... [2023-09-01 13:59:00,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:59:00,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:00,185 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) [2023-09-01 13:59:00,201 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 [2023-09-01 13:59:00,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 13:59:00,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 13:59:00,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 13:59:00,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 13:59:00,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 13:59:00,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 13:59:00,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 13:59:00,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 13:59:00,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 13:59:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 13:59:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 13:59:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 13:59:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 13:59:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 13:59:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 13:59:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 13:59:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 13:59:00,225 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 13:59:00,319 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 13:59:00,321 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 13:59:00,670 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 13:59:00,719 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 13:59:00,720 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 13:59:00,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:59:00 BoogieIcfgContainer [2023-09-01 13:59:00,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 13:59:00,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 13:59:00,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 13:59:00,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 13:59:00,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:58:59" (1/3) ... [2023-09-01 13:59:00,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cf282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:59:00, skipping insertion in model container [2023-09-01 13:59:00,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:59:00" (2/3) ... [2023-09-01 13:59:00,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cf282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:59:00, skipping insertion in model container [2023-09-01 13:59:00,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:59:00" (3/3) ... [2023-09-01 13:59:00,729 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-09-01 13:59:00,739 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 13:59:00,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 13:59:00,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 13:59:00,747 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 13:59:00,847 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 13:59:00,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 144 transitions, 312 flow [2023-09-01 13:59:00,979 INFO L130 PetriNetUnfolder]: 12/141 cut-off events. [2023-09-01 13:59:00,979 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:59:00,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 141 events. 12/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-09-01 13:59:00,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 144 transitions, 312 flow [2023-09-01 13:59:00,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 131 transitions, 280 flow [2023-09-01 13:59:00,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 13:59:01,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 131 transitions, 280 flow [2023-09-01 13:59:01,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 131 transitions, 280 flow [2023-09-01 13:59:01,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 280 flow [2023-09-01 13:59:01,063 INFO L130 PetriNetUnfolder]: 12/131 cut-off events. [2023-09-01 13:59:01,064 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:59:01,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 12/131 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-09-01 13:59:01,069 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-09-01 13:59:05,723 INFO L134 LiptonReduction]: Checked pairs total: 1615 [2023-09-01 13:59:05,723 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-09-01 13:59:05,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 13:59:05,744 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=true, 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;@2c946c05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 13:59:05,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 13:59:05,752 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-09-01 13:59:05,752 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:59:05,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:05,753 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] [2023-09-01 13:59:05,753 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)] === [2023-09-01 13:59:05,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1107178468, now seen corresponding path program 1 times [2023-09-01 13:59:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:05,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317994152] [2023-09-01 13:59:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317994152] [2023-09-01 13:59:06,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317994152] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:59:06,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:59:06,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 13:59:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416088218] [2023-09-01 13:59:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:59:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:59:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:59:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 13:59:06,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 273 [2023-09-01 13:59:06,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:06,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:06,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 273 [2023-09-01 13:59:06,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:06,849 INFO L130 PetriNetUnfolder]: 679/943 cut-off events. [2023-09-01 13:59:06,849 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-09-01 13:59:06,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 943 events. 679/943 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3493 event pairs, 265 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-09-01 13:59:06,857 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 55 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-09-01 13:59:06,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 65 transitions, 304 flow [2023-09-01 13:59:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 13:59:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 13:59:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 870 transitions. [2023-09-01 13:59:06,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552590266875981 [2023-09-01 13:59:06,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 870 transitions. [2023-09-01 13:59:06,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 870 transitions. [2023-09-01 13:59:06,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:06,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 870 transitions. [2023-09-01 13:59:06,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.28571428571429) internal successors, (870), 7 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:06,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:06,896 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:06,898 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 7 states and 870 transitions. [2023-09-01 13:59:06,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 65 transitions, 304 flow [2023-09-01 13:59:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 65 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 13:59:06,905 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 97 flow [2023-09-01 13:59:06,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-09-01 13:59:06,910 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-09-01 13:59:06,910 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 97 flow [2023-09-01 13:59:06,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:06,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:06,913 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] [2023-09-01 13:59:06,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 13:59:06,914 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)] === [2023-09-01 13:59:06,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1966737023, now seen corresponding path program 1 times [2023-09-01 13:59:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700834810] [2023-09-01 13:59:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:07,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700834810] [2023-09-01 13:59:07,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700834810] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:59:07,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:59:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 13:59:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219430784] [2023-09-01 13:59:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:59:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 13:59:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 13:59:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 13:59:07,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 273 [2023-09-01 13:59:07,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:07,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 273 [2023-09-01 13:59:07,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:07,253 INFO L130 PetriNetUnfolder]: 342/475 cut-off events. [2023-09-01 13:59:07,253 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-09-01 13:59:07,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 475 events. 342/475 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1468 event pairs, 133 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 1137. Up to 371 conditions per place. [2023-09-01 13:59:07,257 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 30 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-09-01 13:59:07,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 168 flow [2023-09-01 13:59:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 13:59:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 13:59:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2023-09-01 13:59:07,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45146520146520147 [2023-09-01 13:59:07,259 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 493 transitions. [2023-09-01 13:59:07,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 493 transitions. [2023-09-01 13:59:07,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:07,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 493 transitions. [2023-09-01 13:59:07,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,263 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,264 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 97 flow. Second operand 4 states and 493 transitions. [2023-09-01 13:59:07,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 168 flow [2023-09-01 13:59:07,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 157 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 13:59:07,266 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 77 flow [2023-09-01 13:59:07,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-09-01 13:59:07,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-09-01 13:59:07,268 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 77 flow [2023-09-01 13:59:07,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:07,268 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] [2023-09-01 13:59:07,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 13:59:07,269 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)] === [2023-09-01 13:59:07,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash -805618038, now seen corresponding path program 1 times [2023-09-01 13:59:07,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:07,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675134835] [2023-09-01 13:59:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:07,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:07,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675134835] [2023-09-01 13:59:07,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675134835] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:07,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867850462] [2023-09-01 13:59:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:07,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:07,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:07,373 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) [2023-09-01 13:59:07,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 13:59:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:07,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 13:59:07,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:07,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:07,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867850462] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:07,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 13:59:07,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-09-01 13:59:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504292007] [2023-09-01 13:59:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:59:07,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:59:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:59:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 13:59:07,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 273 [2023-09-01 13:59:07,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:07,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 273 [2023-09-01 13:59:07,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:07,752 INFO L130 PetriNetUnfolder]: 311/453 cut-off events. [2023-09-01 13:59:07,752 INFO L131 PetriNetUnfolder]: For 117/143 co-relation queries the response was YES. [2023-09-01 13:59:07,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 453 events. 311/453 cut-off events. For 117/143 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1443 event pairs, 73 based on Foata normal form. 26/371 useless extension candidates. Maximal degree in co-relation 1011. Up to 349 conditions per place. [2023-09-01 13:59:07,755 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 31 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-09-01 13:59:07,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 177 flow [2023-09-01 13:59:07,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 13:59:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 13:59:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 604 transitions. [2023-09-01 13:59:07,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424908424908425 [2023-09-01 13:59:07,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 604 transitions. [2023-09-01 13:59:07,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 604 transitions. [2023-09-01 13:59:07,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:07,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 604 transitions. [2023-09-01 13:59:07,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,763 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,763 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 77 flow. Second operand 5 states and 604 transitions. [2023-09-01 13:59:07,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 177 flow [2023-09-01 13:59:07,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 13:59:07,765 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 88 flow [2023-09-01 13:59:07,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-09-01 13:59:07,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-09-01 13:59:07,766 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 88 flow [2023-09-01 13:59:07,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:07,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:07,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:07,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 13:59:07,978 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 [2023-09-01 13:59:07,979 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)] === [2023-09-01 13:59:07,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1619003621, now seen corresponding path program 1 times [2023-09-01 13:59:07,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:07,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111148194] [2023-09-01 13:59:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:07,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111148194] [2023-09-01 13:59:08,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111148194] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241135728] [2023-09-01 13:59:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:08,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:08,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:08,677 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) [2023-09-01 13:59:08,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 13:59:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:08,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 13:59:08,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:09,214 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-09-01 13:59:09,215 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 73 treesize of output 59 [2023-09-01 13:59:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:09,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:09,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:09,463 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 85 treesize of output 45 [2023-09-01 13:59:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:09,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241135728] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:09,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:09,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-09-01 13:59:09,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773192247] [2023-09-01 13:59:09,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:09,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 13:59:09,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 13:59:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-09-01 13:59:10,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 273 [2023-09-01 13:59:10,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 88 flow. Second operand has 23 states, 23 states have (on average 101.6086956521739) internal successors, (2337), 23 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:10,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:10,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 273 [2023-09-01 13:59:10,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:11,164 INFO L130 PetriNetUnfolder]: 599/864 cut-off events. [2023-09-01 13:59:11,164 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2023-09-01 13:59:11,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 864 events. 599/864 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3184 event pairs, 84 based on Foata normal form. 1/639 useless extension candidates. Maximal degree in co-relation 1966. Up to 639 conditions per place. [2023-09-01 13:59:11,169 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 64 selfloop transitions, 25 changer transitions 1/91 dead transitions. [2023-09-01 13:59:11,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 91 transitions, 453 flow [2023-09-01 13:59:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 13:59:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 13:59:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1077 transitions. [2023-09-01 13:59:11,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945054945054945 [2023-09-01 13:59:11,173 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1077 transitions. [2023-09-01 13:59:11,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1077 transitions. [2023-09-01 13:59:11,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:11,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1077 transitions. [2023-09-01 13:59:11,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:11,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:11,179 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:11,180 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 88 flow. Second operand 10 states and 1077 transitions. [2023-09-01 13:59:11,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 91 transitions, 453 flow [2023-09-01 13:59:11,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 431 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-09-01 13:59:11,182 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 230 flow [2023-09-01 13:59:11,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2023-09-01 13:59:11,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2023-09-01 13:59:11,184 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 230 flow [2023-09-01 13:59:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 101.6086956521739) internal successors, (2337), 23 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:11,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:11,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:11,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 13:59:11,390 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 [2023-09-01 13:59:11,391 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)] === [2023-09-01 13:59:11,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash 431023461, now seen corresponding path program 2 times [2023-09-01 13:59:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843793213] [2023-09-01 13:59:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:11,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843793213] [2023-09-01 13:59:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843793213] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135254528] [2023-09-01 13:59:11,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:59:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:11,985 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) [2023-09-01 13:59:12,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 13:59:12,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:59:12,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:12,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 13:59:12,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:12,384 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:59:12,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:12,387 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 64 treesize of output 37 [2023-09-01 13:59:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:12,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:12,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:12,528 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 85 treesize of output 45 [2023-09-01 13:59:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:12,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135254528] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:12,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:12,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-09-01 13:59:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678600918] [2023-09-01 13:59:12,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:12,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 13:59:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 13:59:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-09-01 13:59:13,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 273 [2023-09-01 13:59:13,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 230 flow. Second operand has 25 states, 25 states have (on average 98.52) internal successors, (2463), 25 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:13,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:13,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 273 [2023-09-01 13:59:13,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:14,896 INFO L130 PetriNetUnfolder]: 843/1253 cut-off events. [2023-09-01 13:59:14,896 INFO L131 PetriNetUnfolder]: For 848/848 co-relation queries the response was YES. [2023-09-01 13:59:14,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 1253 events. 843/1253 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4605 event pairs, 128 based on Foata normal form. 16/1269 useless extension candidates. Maximal degree in co-relation 2872. Up to 832 conditions per place. [2023-09-01 13:59:14,904 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 98 selfloop transitions, 57 changer transitions 7/162 dead transitions. [2023-09-01 13:59:14,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 162 transitions, 949 flow [2023-09-01 13:59:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-01 13:59:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-09-01 13:59:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2168 transitions. [2023-09-01 13:59:14,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37816152101866385 [2023-09-01 13:59:14,910 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2168 transitions. [2023-09-01 13:59:14,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2168 transitions. [2023-09-01 13:59:14,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:14,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2168 transitions. [2023-09-01 13:59:14,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 103.23809523809524) internal successors, (2168), 21 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:14,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:14,923 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:14,923 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 230 flow. Second operand 21 states and 2168 transitions. [2023-09-01 13:59:14,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 162 transitions, 949 flow [2023-09-01 13:59:14,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 943 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 13:59:14,928 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 625 flow [2023-09-01 13:59:14,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=625, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-09-01 13:59:14,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-09-01 13:59:14,929 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 625 flow [2023-09-01 13:59:14,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.52) internal successors, (2463), 25 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:14,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:14,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:14,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 13:59:15,136 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 [2023-09-01 13:59:15,137 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)] === [2023-09-01 13:59:15,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1301817307, now seen corresponding path program 3 times [2023-09-01 13:59:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463381074] [2023-09-01 13:59:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:15,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463381074] [2023-09-01 13:59:15,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463381074] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781953318] [2023-09-01 13:59:15,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:59:15,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:15,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:15,662 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) [2023-09-01 13:59:15,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 13:59:15,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:59:15,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:15,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 13:59:15,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:16,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:59:16,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:16,104 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 64 treesize of output 37 [2023-09-01 13:59:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:16,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:16,303 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:16,303 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 85 treesize of output 45 [2023-09-01 13:59:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:16,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781953318] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:16,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:16,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-09-01 13:59:16,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600856996] [2023-09-01 13:59:16,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 13:59:16,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 13:59:16,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-09-01 13:59:17,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 273 [2023-09-01 13:59:17,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 625 flow. Second operand has 23 states, 23 states have (on average 102.6086956521739) internal successors, (2360), 23 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:17,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:17,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 273 [2023-09-01 13:59:17,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:18,304 INFO L130 PetriNetUnfolder]: 1085/1624 cut-off events. [2023-09-01 13:59:18,304 INFO L131 PetriNetUnfolder]: For 3498/3528 co-relation queries the response was YES. [2023-09-01 13:59:18,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6522 conditions, 1624 events. 1085/1624 cut-off events. For 3498/3528 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6901 event pairs, 159 based on Foata normal form. 32/1632 useless extension candidates. Maximal degree in co-relation 6485. Up to 958 conditions per place. [2023-09-01 13:59:18,319 INFO L137 encePairwiseOnDemand]: 260/273 looper letters, 106 selfloop transitions, 62 changer transitions 4/177 dead transitions. [2023-09-01 13:59:18,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 177 transitions, 1332 flow [2023-09-01 13:59:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 13:59:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 13:59:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1426 transitions. [2023-09-01 13:59:18,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40180332488024795 [2023-09-01 13:59:18,323 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1426 transitions. [2023-09-01 13:59:18,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1426 transitions. [2023-09-01 13:59:18,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:18,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1426 transitions. [2023-09-01 13:59:18,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 109.6923076923077) internal successors, (1426), 13 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:18,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:18,332 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:18,332 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 625 flow. Second operand 13 states and 1426 transitions. [2023-09-01 13:59:18,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 177 transitions, 1332 flow [2023-09-01 13:59:18,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 177 transitions, 1293 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-09-01 13:59:18,344 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 940 flow [2023-09-01 13:59:18,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=940, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2023-09-01 13:59:18,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2023-09-01 13:59:18,345 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 940 flow [2023-09-01 13:59:18,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 102.6086956521739) internal successors, (2360), 23 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:18,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:18,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:18,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 13:59:18,552 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 [2023-09-01 13:59:18,553 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)] === [2023-09-01 13:59:18,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash -864561951, now seen corresponding path program 4 times [2023-09-01 13:59:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258252569] [2023-09-01 13:59:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:19,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:19,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258252569] [2023-09-01 13:59:19,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258252569] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:19,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801233105] [2023-09-01 13:59:19,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:59:19,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:19,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:19,274 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) [2023-09-01 13:59:19,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 13:59:19,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:59:19,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:19,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 43 conjunts are in the unsatisfiable core [2023-09-01 13:59:19,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:19,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 13:59:19,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:59:19,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:59:19,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:59:19,775 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 34 treesize of output 32 [2023-09-01 13:59:19,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:59:19,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:19,954 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 64 treesize of output 37 [2023-09-01 13:59:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:20,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:20,173 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse1))) (or (<= c_~min2~0 .cse0) (= c_~min1~0 .cse0)))) (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse1) c_~min2~0))))) is different from false [2023-09-01 13:59:20,865 WARN L839 $PredicateComparison]: unable to prove that (and (or (= c_~min2~0 c_~min1~0) (forall ((~M~0 Int) (v_ArrVal_263 (Array Int Int)) (v_ArrVal_265 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (or (< 0 ~M~0) (< ~M~0 0) (< (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~min1~0) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~min2~0))))) (forall ((~M~0 Int)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (or (< (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~min1~0) (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse2 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (= c_~min1~0 .cse2) (<= c_~min2~0 .cse2))))))) (< 0 ~M~0) (< ~M~0 0))) (forall ((~M~0 Int)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= c_~min1~0 .cse3) (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~min2~0)) (= c_~min2~0 .cse3))))) (< 0 ~M~0) (< ~M~0 0))) (forall ((~M~0 Int)) (or (< 0 ~M~0) (< ~M~0 0) (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= c_~min1~0 .cse5) (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (<= c_~min2~0 .cse6) (= .cse6 .cse5))))))))))) is different from false [2023-09-01 13:59:20,931 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:20,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2023-09-01 13:59:20,945 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:20,945 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 1730 treesize of output 1586 [2023-09-01 13:59:20,984 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:20,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 290 [2023-09-01 13:59:21,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 172 [2023-09-01 13:59:21,016 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 108 [2023-09-01 13:59:21,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:21,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 66 [2023-09-01 13:59:21,105 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:59:21,112 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 170 [2023-09-01 13:59:21,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:59:21,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 75 [2023-09-01 13:59:21,133 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 128 [2023-09-01 13:59:21,197 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:21,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 59 [2023-09-01 13:59:21,202 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:59:21,209 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 372 treesize of output 344 [2023-09-01 13:59:21,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:59:21,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2023-09-01 13:59:21,260 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 65 [2023-09-01 13:59:21,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:21,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2023-09-01 13:59:21,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:59:21,309 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 111 [2023-09-01 13:59:21,321 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 95 [2023-09-01 13:59:21,335 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:59:21,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 45 [2023-09-01 13:59:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 13:59:21,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801233105] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:21,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:21,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-09-01 13:59:21,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220974613] [2023-09-01 13:59:21,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:21,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 13:59:21,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 13:59:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=698, Unknown=4, NotChecked=110, Total=930 [2023-09-01 13:59:21,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 273 [2023-09-01 13:59:21,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 940 flow. Second operand has 31 states, 31 states have (on average 73.93548387096774) internal successors, (2292), 31 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:21,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:21,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 273 [2023-09-01 13:59:21,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:24,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:59:25,114 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (let ((.cse0 (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse2))) (or (<= c_~min2~0 .cse3) (= c_~min1~0 .cse3))))) (.cse1 (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse2) c_~min2~0))))) (and .cse0 (or (and .cse0 .cse1) (< c_thread1Thread1of1ForFork1_~i~0 c_~N~0)) .cse1))) is different from false [2023-09-01 13:59:27,096 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_~min2~0 c_~min1~0)) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (let ((.cse0 (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse3))) (or (<= c_~min2~0 .cse4) (= c_~min1~0 .cse4))))) (.cse2 (or .cse1 (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse3) c_~min2~0))))) (and .cse0 (or .cse1 (<= (+ c_thread3Thread1of1ForFork0_~i~2 1) c_~N~0)) (or (and .cse0 .cse2) (< c_thread1Thread1of1ForFork1_~i~0 c_~N~0)) .cse2))) is different from false [2023-09-01 13:59:30,307 INFO L130 PetriNetUnfolder]: 1913/2896 cut-off events. [2023-09-01 13:59:30,307 INFO L131 PetriNetUnfolder]: For 11013/11110 co-relation queries the response was YES. [2023-09-01 13:59:30,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13186 conditions, 2896 events. 1913/2896 cut-off events. For 11013/11110 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14304 event pairs, 142 based on Foata normal form. 50/2910 useless extension candidates. Maximal degree in co-relation 13144. Up to 1334 conditions per place. [2023-09-01 13:59:30,337 INFO L137 encePairwiseOnDemand]: 255/273 looper letters, 173 selfloop transitions, 197 changer transitions 6/381 dead transitions. [2023-09-01 13:59:30,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 381 transitions, 3210 flow [2023-09-01 13:59:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 13:59:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 13:59:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2656 transitions. [2023-09-01 13:59:30,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29481629481629484 [2023-09-01 13:59:30,346 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2656 transitions. [2023-09-01 13:59:30,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2656 transitions. [2023-09-01 13:59:30,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:30,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2656 transitions. [2023-09-01 13:59:30,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 80.48484848484848) internal successors, (2656), 33 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:30,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 273.0) internal successors, (9282), 34 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:30,365 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 273.0) internal successors, (9282), 34 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:30,365 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 940 flow. Second operand 33 states and 2656 transitions. [2023-09-01 13:59:30,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 381 transitions, 3210 flow [2023-09-01 13:59:30,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 381 transitions, 3061 flow, removed 54 selfloop flow, removed 5 redundant places. [2023-09-01 13:59:30,396 INFO L231 Difference]: Finished difference. Result has 130 places, 258 transitions, 2583 flow [2023-09-01 13:59:30,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2583, PETRI_PLACES=130, PETRI_TRANSITIONS=258} [2023-09-01 13:59:30,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2023-09-01 13:59:30,398 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 258 transitions, 2583 flow [2023-09-01 13:59:30,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 73.93548387096774) internal successors, (2292), 31 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:30,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:30,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:30,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 13:59:30,605 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 [2023-09-01 13:59:30,606 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)] === [2023-09-01 13:59:30,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash -148406021, now seen corresponding path program 5 times [2023-09-01 13:59:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314780365] [2023-09-01 13:59:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314780365] [2023-09-01 13:59:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314780365] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172436122] [2023-09-01 13:59:31,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:59:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:31,181 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) [2023-09-01 13:59:31,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 13:59:31,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 13:59:31,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:31,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-09-01 13:59:31,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:31,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:31,598 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 73 treesize of output 67 [2023-09-01 13:59:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:31,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:31,952 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:31,953 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 85 treesize of output 45 [2023-09-01 13:59:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172436122] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:32,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:32,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 22 [2023-09-01 13:59:32,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860959461] [2023-09-01 13:59:32,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:32,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 13:59:32,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:32,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 13:59:32,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2023-09-01 13:59:33,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-09-01 13:59:33,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 258 transitions, 2583 flow. Second operand has 24 states, 24 states have (on average 99.625) internal successors, (2391), 24 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:33,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:33,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-09-01 13:59:33,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:37,139 INFO L130 PetriNetUnfolder]: 3059/4540 cut-off events. [2023-09-01 13:59:37,140 INFO L131 PetriNetUnfolder]: For 37285/37285 co-relation queries the response was YES. [2023-09-01 13:59:37,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28770 conditions, 4540 events. 3059/4540 cut-off events. For 37285/37285 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22306 event pairs, 336 based on Foata normal form. 4/4544 useless extension candidates. Maximal degree in co-relation 28715. Up to 2660 conditions per place. [2023-09-01 13:59:37,198 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 333 selfloop transitions, 256 changer transitions 12/601 dead transitions. [2023-09-01 13:59:37,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 601 transitions, 7230 flow [2023-09-01 13:59:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-09-01 13:59:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-09-01 13:59:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4781 transitions. [2023-09-01 13:59:37,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38071348940914157 [2023-09-01 13:59:37,212 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4781 transitions. [2023-09-01 13:59:37,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4781 transitions. [2023-09-01 13:59:37,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:37,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4781 transitions. [2023-09-01 13:59:37,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 103.93478260869566) internal successors, (4781), 46 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:37,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 273.0) internal successors, (12831), 47 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:37,254 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 273.0) internal successors, (12831), 47 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:37,255 INFO L175 Difference]: Start difference. First operand has 130 places, 258 transitions, 2583 flow. Second operand 46 states and 4781 transitions. [2023-09-01 13:59:37,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 601 transitions, 7230 flow [2023-09-01 13:59:37,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 601 transitions, 6545 flow, removed 332 selfloop flow, removed 5 redundant places. [2023-09-01 13:59:37,394 INFO L231 Difference]: Finished difference. Result has 183 places, 440 transitions, 4598 flow [2023-09-01 13:59:37,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4598, PETRI_PLACES=183, PETRI_TRANSITIONS=440} [2023-09-01 13:59:37,395 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2023-09-01 13:59:37,395 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 440 transitions, 4598 flow [2023-09-01 13:59:37,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 99.625) internal successors, (2391), 24 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:37,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:37,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:37,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 13:59:37,601 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 [2023-09-01 13:59:37,602 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)] === [2023-09-01 13:59:37,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2071953061, now seen corresponding path program 6 times [2023-09-01 13:59:37,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:37,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884206743] [2023-09-01 13:59:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:37,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884206743] [2023-09-01 13:59:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884206743] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:38,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127862591] [2023-09-01 13:59:38,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:59:38,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:38,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:38,119 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) [2023-09-01 13:59:38,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 13:59:38,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 13:59:38,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:38,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-09-01 13:59:38,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:38,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 33 [2023-09-01 13:59:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:38,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:38,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:38,720 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 73 treesize of output 45 [2023-09-01 13:59:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127862591] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:38,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:38,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-09-01 13:59:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790047453] [2023-09-01 13:59:38,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:38,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 13:59:38,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 13:59:38,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-09-01 13:59:39,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 273 [2023-09-01 13:59:39,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 440 transitions, 4598 flow. Second operand has 23 states, 23 states have (on average 100.69565217391305) internal successors, (2316), 23 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:39,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:39,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 273 [2023-09-01 13:59:39,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:40,817 INFO L130 PetriNetUnfolder]: 3271/4858 cut-off events. [2023-09-01 13:59:40,817 INFO L131 PetriNetUnfolder]: For 41837/41837 co-relation queries the response was YES. [2023-09-01 13:59:40,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31891 conditions, 4858 events. 3271/4858 cut-off events. For 41837/41837 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 24205 event pairs, 611 based on Foata normal form. 2/4840 useless extension candidates. Maximal degree in co-relation 31823. Up to 4362 conditions per place. [2023-09-01 13:59:40,869 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 400 selfloop transitions, 117 changer transitions 1/518 dead transitions. [2023-09-01 13:59:40,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 518 transitions, 6521 flow [2023-09-01 13:59:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 13:59:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 13:59:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1883 transitions. [2023-09-01 13:59:40,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831908831908832 [2023-09-01 13:59:40,873 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1883 transitions. [2023-09-01 13:59:40,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1883 transitions. [2023-09-01 13:59:40,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:40,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1883 transitions. [2023-09-01 13:59:40,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 104.61111111111111) internal successors, (1883), 18 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:40,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:40,882 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:40,882 INFO L175 Difference]: Start difference. First operand has 183 places, 440 transitions, 4598 flow. Second operand 18 states and 1883 transitions. [2023-09-01 13:59:40,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 518 transitions, 6521 flow [2023-09-01 13:59:41,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 518 transitions, 5795 flow, removed 344 selfloop flow, removed 4 redundant places. [2023-09-01 13:59:41,090 INFO L231 Difference]: Finished difference. Result has 201 places, 467 transitions, 4571 flow [2023-09-01 13:59:41,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3948, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4571, PETRI_PLACES=201, PETRI_TRANSITIONS=467} [2023-09-01 13:59:41,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2023-09-01 13:59:41,093 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 467 transitions, 4571 flow [2023-09-01 13:59:41,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 100.69565217391305) internal successors, (2316), 23 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:41,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:41,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:41,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 13:59:41,299 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 [2023-09-01 13:59:41,300 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)] === [2023-09-01 13:59:41,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2082549841, now seen corresponding path program 7 times [2023-09-01 13:59:41,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:41,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999815283] [2023-09-01 13:59:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:41,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:42,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999815283] [2023-09-01 13:59:42,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999815283] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807248014] [2023-09-01 13:59:42,103 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 13:59:42,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:42,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:42,109 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) [2023-09-01 13:59:42,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 13:59:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:42,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2023-09-01 13:59:42,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:42,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:59:42,521 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 34 treesize of output 32 [2023-09-01 13:59:42,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:59:42,611 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 34 treesize of output 32 [2023-09-01 13:59:42,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:59:42,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:42,738 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 64 treesize of output 37 [2023-09-01 13:59:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:42,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:42,930 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_399 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_399) c_~A~0.base) .cse0) c_~min2~0))) (forall ((v_ArrVal_399 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_399) c_~A~0.base) .cse0))) (or (<= c_~min2~0 .cse1) (= .cse1 c_~min1~0)))))) is different from false [2023-09-01 13:59:42,968 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_399 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_398) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_399) c_~A~0.base) .cse0) c_~min2~0))) (forall ((v_ArrVal_399 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_398) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_399) c_~A~0.base) .cse0))) (or (= c_~min1~0 .cse1) (<= c_~min2~0 .cse1)))))) is different from false [2023-09-01 13:59:42,997 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:59:42,998 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 331 treesize of output 283 [2023-09-01 13:59:43,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 159 [2023-09-01 13:59:43,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 153 [2023-09-01 13:59:43,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 141 [2023-09-01 13:59:43,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 129 [2023-09-01 13:59:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 13:59:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807248014] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:43,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:43,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 28 [2023-09-01 13:59:43,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89550653] [2023-09-01 13:59:43,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:43,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 13:59:43,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 13:59:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=653, Unknown=2, NotChecked=106, Total=870 [2023-09-01 13:59:43,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 273 [2023-09-01 13:59:43,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 467 transitions, 4571 flow. Second operand has 30 states, 30 states have (on average 74.13333333333334) internal successors, (2224), 30 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:43,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:43,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 273 [2023-09-01 13:59:43,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:45,781 INFO L130 PetriNetUnfolder]: 4397/6620 cut-off events. [2023-09-01 13:59:45,782 INFO L131 PetriNetUnfolder]: For 55383/55383 co-relation queries the response was YES. [2023-09-01 13:59:45,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41303 conditions, 6620 events. 4397/6620 cut-off events. For 55383/55383 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36305 event pairs, 294 based on Foata normal form. 84/6674 useless extension candidates. Maximal degree in co-relation 41231. Up to 4081 conditions per place. [2023-09-01 13:59:45,833 INFO L137 encePairwiseOnDemand]: 256/273 looper letters, 469 selfloop transitions, 344 changer transitions 8/821 dead transitions. [2023-09-01 13:59:45,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 821 transitions, 9381 flow [2023-09-01 13:59:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 13:59:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 13:59:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1891 transitions. [2023-09-01 13:59:45,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3011626055104316 [2023-09-01 13:59:45,837 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1891 transitions. [2023-09-01 13:59:45,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1891 transitions. [2023-09-01 13:59:45,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:45,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1891 transitions. [2023-09-01 13:59:45,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 82.21739130434783) internal successors, (1891), 23 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:45,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 273.0) internal successors, (6552), 24 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:45,846 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 273.0) internal successors, (6552), 24 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:45,846 INFO L175 Difference]: Start difference. First operand has 201 places, 467 transitions, 4571 flow. Second operand 23 states and 1891 transitions. [2023-09-01 13:59:45,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 821 transitions, 9381 flow [2023-09-01 13:59:46,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 821 transitions, 9178 flow, removed 44 selfloop flow, removed 11 redundant places. [2023-09-01 13:59:46,031 INFO L231 Difference]: Finished difference. Result has 221 places, 650 transitions, 7208 flow [2023-09-01 13:59:46,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7208, PETRI_PLACES=221, PETRI_TRANSITIONS=650} [2023-09-01 13:59:46,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2023-09-01 13:59:46,033 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 650 transitions, 7208 flow [2023-09-01 13:59:46,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 74.13333333333334) internal successors, (2224), 30 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:46,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:46,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:46,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 13:59:46,240 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 [2023-09-01 13:59:46,240 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)] === [2023-09-01 13:59:46,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:46,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1642410344, now seen corresponding path program 8 times [2023-09-01 13:59:46,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:46,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099127099] [2023-09-01 13:59:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:46,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:46,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099127099] [2023-09-01 13:59:46,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099127099] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:46,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899652535] [2023-09-01 13:59:46,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:59:46,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:46,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:46,349 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) [2023-09-01 13:59:46,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 13:59:46,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:59:46,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:46,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:59:46,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:46,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899652535] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:46,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:46,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 13:59:46,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165372205] [2023-09-01 13:59:46,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:46,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 13:59:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 13:59:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-09-01 13:59:46,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 273 [2023-09-01 13:59:46,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 650 transitions, 7208 flow. Second operand has 14 states, 14 states have (on average 116.42857142857143) internal successors, (1630), 14 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:46,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:46,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 273 [2023-09-01 13:59:46,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:48,006 INFO L130 PetriNetUnfolder]: 3874/5852 cut-off events. [2023-09-01 13:59:48,006 INFO L131 PetriNetUnfolder]: For 78269/78680 co-relation queries the response was YES. [2023-09-01 13:59:48,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43221 conditions, 5852 events. 3874/5852 cut-off events. For 78269/78680 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 32695 event pairs, 868 based on Foata normal form. 229/5858 useless extension candidates. Maximal degree in co-relation 43139. Up to 3724 conditions per place. [2023-09-01 13:59:48,063 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 516 selfloop transitions, 101 changer transitions 0/676 dead transitions. [2023-09-01 13:59:48,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 676 transitions, 8741 flow [2023-09-01 13:59:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 13:59:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 13:59:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 863 transitions. [2023-09-01 13:59:48,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45159602302459445 [2023-09-01 13:59:48,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 863 transitions. [2023-09-01 13:59:48,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 863 transitions. [2023-09-01 13:59:48,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:48,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 863 transitions. [2023-09-01 13:59:48,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:48,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:48,068 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:48,069 INFO L175 Difference]: Start difference. First operand has 221 places, 650 transitions, 7208 flow. Second operand 7 states and 863 transitions. [2023-09-01 13:59:48,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 676 transitions, 8741 flow [2023-09-01 13:59:48,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 676 transitions, 8091 flow, removed 225 selfloop flow, removed 18 redundant places. [2023-09-01 13:59:48,355 INFO L231 Difference]: Finished difference. Result has 208 places, 588 transitions, 6409 flow [2023-09-01 13:59:48,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5728, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6409, PETRI_PLACES=208, PETRI_TRANSITIONS=588} [2023-09-01 13:59:48,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2023-09-01 13:59:48,356 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 588 transitions, 6409 flow [2023-09-01 13:59:48,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 116.42857142857143) internal successors, (1630), 14 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:48,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:48,357 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:48,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-09-01 13:59:48,563 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 [2023-09-01 13:59:48,563 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)] === [2023-09-01 13:59:48,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash 100989172, now seen corresponding path program 9 times [2023-09-01 13:59:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:48,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623684443] [2023-09-01 13:59:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:48,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:48,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623684443] [2023-09-01 13:59:48,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623684443] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:48,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672847970] [2023-09-01 13:59:48,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:59:48,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:48,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:48,661 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) [2023-09-01 13:59:48,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 13:59:48,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:59:48,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:48,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:59:48,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:48,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:48,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672847970] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:48,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:48,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 13:59:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004824472] [2023-09-01 13:59:48,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:48,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 13:59:48,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:48,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 13:59:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-09-01 13:59:49,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 273 [2023-09-01 13:59:49,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 588 transitions, 6409 flow. Second operand has 14 states, 14 states have (on average 116.35714285714286) internal successors, (1629), 14 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:49,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:49,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 273 [2023-09-01 13:59:49,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:49,873 INFO L130 PetriNetUnfolder]: 3251/5086 cut-off events. [2023-09-01 13:59:49,873 INFO L131 PetriNetUnfolder]: For 61855/62126 co-relation queries the response was YES. [2023-09-01 13:59:49,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36264 conditions, 5086 events. 3251/5086 cut-off events. For 61855/62126 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 29258 event pairs, 533 based on Foata normal form. 373/5274 useless extension candidates. Maximal degree in co-relation 36188. Up to 2558 conditions per place. [2023-09-01 13:59:49,919 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 495 selfloop transitions, 38 changer transitions 2/591 dead transitions. [2023-09-01 13:59:49,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 591 transitions, 7623 flow [2023-09-01 13:59:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 13:59:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 13:59:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 984 transitions. [2023-09-01 13:59:49,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2023-09-01 13:59:49,921 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 984 transitions. [2023-09-01 13:59:49,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 984 transitions. [2023-09-01 13:59:49,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:49,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 984 transitions. [2023-09-01 13:59:49,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:49,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:49,925 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:49,926 INFO L175 Difference]: Start difference. First operand has 208 places, 588 transitions, 6409 flow. Second operand 8 states and 984 transitions. [2023-09-01 13:59:49,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 591 transitions, 7623 flow [2023-09-01 13:59:50,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 591 transitions, 7468 flow, removed 75 selfloop flow, removed 6 redundant places. [2023-09-01 13:59:50,213 INFO L231 Difference]: Finished difference. Result has 205 places, 506 transitions, 5649 flow [2023-09-01 13:59:50,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5518, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5649, PETRI_PLACES=205, PETRI_TRANSITIONS=506} [2023-09-01 13:59:50,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2023-09-01 13:59:50,214 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 506 transitions, 5649 flow [2023-09-01 13:59:50,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 116.35714285714286) internal successors, (1629), 14 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:50,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:50,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:50,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-09-01 13:59:50,416 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 [2023-09-01 13:59:50,416 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)] === [2023-09-01 13:59:50,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -116221727, now seen corresponding path program 1 times [2023-09-01 13:59:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:50,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844642891] [2023-09-01 13:59:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:50,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:50,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844642891] [2023-09-01 13:59:50,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844642891] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647950444] [2023-09-01 13:59:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:50,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:50,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:50,539 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) [2023-09-01 13:59:50,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 13:59:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:50,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:59:50,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:50,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:59:50,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647950444] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:50,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:50,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 13:59:50,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922524420] [2023-09-01 13:59:50,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:50,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 13:59:50,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:50,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 13:59:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-09-01 13:59:51,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 13:59:51,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 506 transitions, 5649 flow. Second operand has 18 states, 18 states have (on average 110.61111111111111) internal successors, (1991), 18 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:51,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:51,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 13:59:51,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:52,849 INFO L130 PetriNetUnfolder]: 4844/7733 cut-off events. [2023-09-01 13:59:52,849 INFO L131 PetriNetUnfolder]: For 73919/73977 co-relation queries the response was YES. [2023-09-01 13:59:52,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50789 conditions, 7733 events. 4844/7733 cut-off events. For 73919/73977 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 49038 event pairs, 266 based on Foata normal form. 274/8004 useless extension candidates. Maximal degree in co-relation 50714. Up to 2745 conditions per place. [2023-09-01 13:59:52,905 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 891 selfloop transitions, 226 changer transitions 44/1182 dead transitions. [2023-09-01 13:59:52,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1182 transitions, 14882 flow [2023-09-01 13:59:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 13:59:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 13:59:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2346 transitions. [2023-09-01 13:59:52,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42967032967032964 [2023-09-01 13:59:52,907 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2346 transitions. [2023-09-01 13:59:52,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2346 transitions. [2023-09-01 13:59:52,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:52,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2346 transitions. [2023-09-01 13:59:52,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 117.3) internal successors, (2346), 20 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:52,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 273.0) internal successors, (5733), 21 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:52,916 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 273.0) internal successors, (5733), 21 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:52,916 INFO L175 Difference]: Start difference. First operand has 205 places, 506 transitions, 5649 flow. Second operand 20 states and 2346 transitions. [2023-09-01 13:59:52,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1182 transitions, 14882 flow [2023-09-01 13:59:53,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1182 transitions, 14425 flow, removed 61 selfloop flow, removed 5 redundant places. [2023-09-01 13:59:53,157 INFO L231 Difference]: Finished difference. Result has 229 places, 652 transitions, 7980 flow [2023-09-01 13:59:53,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5413, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7980, PETRI_PLACES=229, PETRI_TRANSITIONS=652} [2023-09-01 13:59:53,158 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2023-09-01 13:59:53,159 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 652 transitions, 7980 flow [2023-09-01 13:59:53,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 110.61111111111111) internal successors, (1991), 18 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:53,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:53,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:53,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 13:59:53,359 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 [2023-09-01 13:59:53,360 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)] === [2023-09-01 13:59:53,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:53,360 INFO L85 PathProgramCache]: Analyzing trace with hash -499700189, now seen corresponding path program 2 times [2023-09-01 13:59:53,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:53,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534184801] [2023-09-01 13:59:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:53,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:53,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:53,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534184801] [2023-09-01 13:59:53,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534184801] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:53,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332786896] [2023-09-01 13:59:53,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:59:53,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:53,469 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) [2023-09-01 13:59:53,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 13:59:53,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:59:53,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:53,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 13:59:53,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:59:53,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:59:53,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332786896] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:53,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:53,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-09-01 13:59:53,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606261423] [2023-09-01 13:59:53,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:53,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 13:59:53,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 13:59:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-09-01 13:59:53,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 13:59:53,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 652 transitions, 7980 flow. Second operand has 15 states, 15 states have (on average 111.8) internal successors, (1677), 15 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:53,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:53,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 13:59:53,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:55,564 INFO L130 PetriNetUnfolder]: 3920/6446 cut-off events. [2023-09-01 13:59:55,564 INFO L131 PetriNetUnfolder]: For 74811/74852 co-relation queries the response was YES. [2023-09-01 13:59:55,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45264 conditions, 6446 events. 3920/6446 cut-off events. For 74811/74852 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 41610 event pairs, 445 based on Foata normal form. 430/6868 useless extension candidates. Maximal degree in co-relation 45180. Up to 3353 conditions per place. [2023-09-01 13:59:55,618 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 643 selfloop transitions, 66 changer transitions 32/761 dead transitions. [2023-09-01 13:59:55,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 761 transitions, 9909 flow [2023-09-01 13:59:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 13:59:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 13:59:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1053 transitions. [2023-09-01 13:59:55,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-09-01 13:59:55,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1053 transitions. [2023-09-01 13:59:55,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1053 transitions. [2023-09-01 13:59:55,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:55,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1053 transitions. [2023-09-01 13:59:55,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:55,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:55,627 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:55,627 INFO L175 Difference]: Start difference. First operand has 229 places, 652 transitions, 7980 flow. Second operand 9 states and 1053 transitions. [2023-09-01 13:59:55,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 761 transitions, 9909 flow [2023-09-01 13:59:56,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 761 transitions, 9768 flow, removed 41 selfloop flow, removed 9 redundant places. [2023-09-01 13:59:56,063 INFO L231 Difference]: Finished difference. Result has 222 places, 517 transitions, 6087 flow [2023-09-01 13:59:56,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6222, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6087, PETRI_PLACES=222, PETRI_TRANSITIONS=517} [2023-09-01 13:59:56,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-09-01 13:59:56,064 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 517 transitions, 6087 flow [2023-09-01 13:59:56,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 111.8) internal successors, (1677), 15 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:56,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:56,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:56,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 13:59:56,271 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 [2023-09-01 13:59:56,271 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)] === [2023-09-01 13:59:56,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1029323376, now seen corresponding path program 10 times [2023-09-01 13:59:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061562263] [2023-09-01 13:59:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:56,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061562263] [2023-09-01 13:59:56,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061562263] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:56,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758391822] [2023-09-01 13:59:56,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:59:56,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:56,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:56,420 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) [2023-09-01 13:59:56,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 13:59:56,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:59:56,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:56,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 13:59:56,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:56,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:59:56,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758391822] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:56,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:56,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2023-09-01 13:59:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383149106] [2023-09-01 13:59:56,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:56,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 13:59:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 13:59:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-09-01 13:59:57,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 273 [2023-09-01 13:59:57,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 517 transitions, 6087 flow. Second operand has 17 states, 17 states have (on average 112.47058823529412) internal successors, (1912), 17 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:57,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:57,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 273 [2023-09-01 13:59:57,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:59:58,335 INFO L130 PetriNetUnfolder]: 2695/4596 cut-off events. [2023-09-01 13:59:58,335 INFO L131 PetriNetUnfolder]: For 49148/49266 co-relation queries the response was YES. [2023-09-01 13:59:58,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32421 conditions, 4596 events. 2695/4596 cut-off events. For 49148/49266 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 29653 event pairs, 202 based on Foata normal form. 340/4908 useless extension candidates. Maximal degree in co-relation 32343. Up to 1645 conditions per place. [2023-09-01 13:59:58,363 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 224 selfloop transitions, 150 changer transitions 267/649 dead transitions. [2023-09-01 13:59:58,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 649 transitions, 8809 flow [2023-09-01 13:59:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:59:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:59:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2202 transitions. [2023-09-01 13:59:58,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42452284557547715 [2023-09-01 13:59:58,367 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2202 transitions. [2023-09-01 13:59:58,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2202 transitions. [2023-09-01 13:59:58,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:59:58,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2202 transitions. [2023-09-01 13:59:58,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 115.89473684210526) internal successors, (2202), 19 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:58,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:58,372 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:58,372 INFO L175 Difference]: Start difference. First operand has 222 places, 517 transitions, 6087 flow. Second operand 19 states and 2202 transitions. [2023-09-01 13:59:58,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 649 transitions, 8809 flow [2023-09-01 13:59:58,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 649 transitions, 8430 flow, removed 100 selfloop flow, removed 12 redundant places. [2023-09-01 13:59:58,518 INFO L231 Difference]: Finished difference. Result has 227 places, 324 transitions, 3526 flow [2023-09-01 13:59:58,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5609, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3526, PETRI_PLACES=227, PETRI_TRANSITIONS=324} [2023-09-01 13:59:58,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2023-09-01 13:59:58,519 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 324 transitions, 3526 flow [2023-09-01 13:59:58,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 112.47058823529412) internal successors, (1912), 17 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:58,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:59:58,519 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:59:58,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 13:59:58,719 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 [2023-09-01 13:59:58,720 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)] === [2023-09-01 13:59:58,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:59:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash 743886729, now seen corresponding path program 11 times [2023-09-01 13:59:58,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:59:58,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318052431] [2023-09-01 13:59:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:59:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:59:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:59:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:59:58,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:59:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318052431] [2023-09-01 13:59:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318052431] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:59:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786853718] [2023-09-01 13:59:58,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:59:58,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:59:58,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:59:58,861 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) [2023-09-01 13:59:58,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 13:59:58,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:59:58,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:59:58,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:59:58,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:59:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:59:59,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:59:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:59:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786853718] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:59:59,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:59:59,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-09-01 13:59:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951469911] [2023-09-01 13:59:59,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:59:59,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 13:59:59,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:59:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 13:59:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-09-01 13:59:59,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-09-01 13:59:59,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 324 transitions, 3526 flow. Second operand has 18 states, 18 states have (on average 106.55555555555556) internal successors, (1918), 18 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:59:59,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:59:59,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-09-01 13:59:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:00,334 INFO L130 PetriNetUnfolder]: 1612/2350 cut-off events. [2023-09-01 14:00:00,334 INFO L131 PetriNetUnfolder]: For 23048/23048 co-relation queries the response was YES. [2023-09-01 14:00:00,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17460 conditions, 2350 events. 1612/2350 cut-off events. For 23048/23048 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10032 event pairs, 99 based on Foata normal form. 20/2370 useless extension candidates. Maximal degree in co-relation 17401. Up to 1058 conditions per place. [2023-09-01 14:00:00,353 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 282 selfloop transitions, 188 changer transitions 0/470 dead transitions. [2023-09-01 14:00:00,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 470 transitions, 6071 flow [2023-09-01 14:00:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 14:00:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 14:00:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2097 transitions. [2023-09-01 14:00:00,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042799305957201 [2023-09-01 14:00:00,356 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2097 transitions. [2023-09-01 14:00:00,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2097 transitions. [2023-09-01 14:00:00,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:00,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2097 transitions. [2023-09-01 14:00:00,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 110.36842105263158) internal successors, (2097), 19 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:00,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:00,362 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:00,362 INFO L175 Difference]: Start difference. First operand has 227 places, 324 transitions, 3526 flow. Second operand 19 states and 2097 transitions. [2023-09-01 14:00:00,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 470 transitions, 6071 flow [2023-09-01 14:00:00,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 470 transitions, 5335 flow, removed 187 selfloop flow, removed 25 redundant places. [2023-09-01 14:00:00,442 INFO L231 Difference]: Finished difference. Result has 167 places, 369 transitions, 4005 flow [2023-09-01 14:00:00,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3030, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4005, PETRI_PLACES=167, PETRI_TRANSITIONS=369} [2023-09-01 14:00:00,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2023-09-01 14:00:00,443 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 369 transitions, 4005 flow [2023-09-01 14:00:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 106.55555555555556) internal successors, (1918), 18 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:00,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:00,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:00,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 14:00:00,644 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 [2023-09-01 14:00:00,644 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)] === [2023-09-01 14:00:00,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192607, now seen corresponding path program 12 times [2023-09-01 14:00:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:00,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092058768] [2023-09-01 14:00:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:00,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:00,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092058768] [2023-09-01 14:00:00,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092058768] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:00,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362112748] [2023-09-01 14:00:00,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 14:00:00,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:00,777 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) [2023-09-01 14:00:00,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 14:00:00,891 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 14:00:00,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:00:00,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:00:00,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:00,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:01,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362112748] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:01,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:01,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-09-01 14:00:01,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888737210] [2023-09-01 14:00:01,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:01,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 14:00:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:01,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 14:00:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-09-01 14:00:01,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 14:00:01,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 369 transitions, 4005 flow. Second operand has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:01,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:01,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 14:00:01,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:01,878 INFO L130 PetriNetUnfolder]: 1868/2746 cut-off events. [2023-09-01 14:00:01,878 INFO L131 PetriNetUnfolder]: For 22957/22968 co-relation queries the response was YES. [2023-09-01 14:00:01,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19379 conditions, 2746 events. 1868/2746 cut-off events. For 22957/22968 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12286 event pairs, 294 based on Foata normal form. 36/2774 useless extension candidates. Maximal degree in co-relation 19330. Up to 1450 conditions per place. [2023-09-01 14:00:01,898 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 419 selfloop transitions, 88 changer transitions 0/523 dead transitions. [2023-09-01 14:00:01,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 523 transitions, 6490 flow [2023-09-01 14:00:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:00:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:00:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1040 transitions. [2023-09-01 14:00:01,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2023-09-01 14:00:01,900 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1040 transitions. [2023-09-01 14:00:01,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1040 transitions. [2023-09-01 14:00:01,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:01,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1040 transitions. [2023-09-01 14:00:01,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:01,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:01,902 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:01,903 INFO L175 Difference]: Start difference. First operand has 167 places, 369 transitions, 4005 flow. Second operand 9 states and 1040 transitions. [2023-09-01 14:00:01,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 523 transitions, 6490 flow [2023-09-01 14:00:01,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 523 transitions, 6138 flow, removed 98 selfloop flow, removed 7 redundant places. [2023-09-01 14:00:01,984 INFO L231 Difference]: Finished difference. Result has 170 places, 375 transitions, 4138 flow [2023-09-01 14:00:01,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4138, PETRI_PLACES=170, PETRI_TRANSITIONS=375} [2023-09-01 14:00:01,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2023-09-01 14:00:01,985 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 375 transitions, 4138 flow [2023-09-01 14:00:01,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:01,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:01,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:01,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 14:00:02,191 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 [2023-09-01 14:00:02,191 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)] === [2023-09-01 14:00:02,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:02,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1464757537, now seen corresponding path program 13 times [2023-09-01 14:00:02,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:02,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851709831] [2023-09-01 14:00:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:02,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:02,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851709831] [2023-09-01 14:00:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851709831] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939667779] [2023-09-01 14:00:02,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 14:00:02,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:02,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:02,317 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) [2023-09-01 14:00:02,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 14:00:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:02,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:00:02,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:02,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939667779] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:02,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:02,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-09-01 14:00:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912678198] [2023-09-01 14:00:02,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:02,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 14:00:02,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:02,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 14:00:02,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-09-01 14:00:02,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 14:00:02,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 375 transitions, 4138 flow. Second operand has 20 states, 20 states have (on average 110.1) internal successors, (2202), 20 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:02,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:02,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 14:00:02,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:03,854 INFO L130 PetriNetUnfolder]: 2923/4310 cut-off events. [2023-09-01 14:00:03,855 INFO L131 PetriNetUnfolder]: For 35536/35586 co-relation queries the response was YES. [2023-09-01 14:00:03,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30658 conditions, 4310 events. 2923/4310 cut-off events. For 35536/35586 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20920 event pairs, 332 based on Foata normal form. 60/4366 useless extension candidates. Maximal degree in co-relation 30607. Up to 1759 conditions per place. [2023-09-01 14:00:03,887 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 439 selfloop transitions, 235 changer transitions 0/690 dead transitions. [2023-09-01 14:00:03,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 690 transitions, 8656 flow [2023-09-01 14:00:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 14:00:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 14:00:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2096 transitions. [2023-09-01 14:00:03,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42653642653642654 [2023-09-01 14:00:03,890 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2096 transitions. [2023-09-01 14:00:03,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2096 transitions. [2023-09-01 14:00:03,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:03,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2096 transitions. [2023-09-01 14:00:03,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 116.44444444444444) internal successors, (2096), 18 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:03,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:03,896 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:03,896 INFO L175 Difference]: Start difference. First operand has 170 places, 375 transitions, 4138 flow. Second operand 18 states and 2096 transitions. [2023-09-01 14:00:03,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 690 transitions, 8656 flow [2023-09-01 14:00:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 690 transitions, 8424 flow, removed 78 selfloop flow, removed 4 redundant places. [2023-09-01 14:00:04,056 INFO L231 Difference]: Finished difference. Result has 190 places, 472 transitions, 5971 flow [2023-09-01 14:00:04,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4015, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5971, PETRI_PLACES=190, PETRI_TRANSITIONS=472} [2023-09-01 14:00:04,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2023-09-01 14:00:04,056 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 472 transitions, 5971 flow [2023-09-01 14:00:04,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 110.1) internal successors, (2202), 20 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:04,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:04,057 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:04,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-09-01 14:00:04,257 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 [2023-09-01 14:00:04,258 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)] === [2023-09-01 14:00:04,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1184715765, now seen corresponding path program 14 times [2023-09-01 14:00:04,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:04,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216898601] [2023-09-01 14:00:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:04,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216898601] [2023-09-01 14:00:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216898601] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206247269] [2023-09-01 14:00:04,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:00:04,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:04,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:04,396 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) [2023-09-01 14:00:04,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 14:00:04,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:00:04,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:00:04,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:00:04,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:04,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:04,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206247269] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:04,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:04,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-09-01 14:00:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768838579] [2023-09-01 14:00:04,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:04,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 14:00:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 14:00:04,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-09-01 14:00:05,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 14:00:05,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 472 transitions, 5971 flow. Second operand has 21 states, 21 states have (on average 110.14285714285714) internal successors, (2313), 21 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:05,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:05,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 14:00:05,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:06,134 INFO L130 PetriNetUnfolder]: 3007/4474 cut-off events. [2023-09-01 14:00:06,134 INFO L131 PetriNetUnfolder]: For 43776/43806 co-relation queries the response was YES. [2023-09-01 14:00:06,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33416 conditions, 4474 events. 3007/4474 cut-off events. For 43776/43806 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22253 event pairs, 508 based on Foata normal form. 42/4516 useless extension candidates. Maximal degree in co-relation 33358. Up to 2471 conditions per place. [2023-09-01 14:00:06,170 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 505 selfloop transitions, 189 changer transitions 0/710 dead transitions. [2023-09-01 14:00:06,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 710 transitions, 9907 flow [2023-09-01 14:00:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:00:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:00:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1627 transitions. [2023-09-01 14:00:06,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42569335426478283 [2023-09-01 14:00:06,172 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1627 transitions. [2023-09-01 14:00:06,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1627 transitions. [2023-09-01 14:00:06,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:06,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1627 transitions. [2023-09-01 14:00:06,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 116.21428571428571) internal successors, (1627), 14 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:06,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:06,178 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:06,178 INFO L175 Difference]: Start difference. First operand has 190 places, 472 transitions, 5971 flow. Second operand 14 states and 1627 transitions. [2023-09-01 14:00:06,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 710 transitions, 9907 flow [2023-09-01 14:00:06,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 710 transitions, 9600 flow, removed 131 selfloop flow, removed 5 redundant places. [2023-09-01 14:00:06,396 INFO L231 Difference]: Finished difference. Result has 204 places, 534 transitions, 7332 flow [2023-09-01 14:00:06,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5726, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7332, PETRI_PLACES=204, PETRI_TRANSITIONS=534} [2023-09-01 14:00:06,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2023-09-01 14:00:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 534 transitions, 7332 flow [2023-09-01 14:00:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.14285714285714) internal successors, (2313), 21 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:06,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:06,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:06,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-09-01 14:00:06,603 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 [2023-09-01 14:00:06,603 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)] === [2023-09-01 14:00:06,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash -599905997, now seen corresponding path program 15 times [2023-09-01 14:00:06,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:06,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535340726] [2023-09-01 14:00:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:06,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:06,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535340726] [2023-09-01 14:00:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535340726] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880263239] [2023-09-01 14:00:06,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:00:06,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:06,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:06,761 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) [2023-09-01 14:00:06,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 14:00:06,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 14:00:06,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:00:06,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:00:06,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:06,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880263239] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:07,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-09-01 14:00:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860985467] [2023-09-01 14:00:07,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:07,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 14:00:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 14:00:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-09-01 14:00:07,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 14:00:07,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 534 transitions, 7332 flow. Second operand has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:07,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:07,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 14:00:07,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:08,451 INFO L130 PetriNetUnfolder]: 2969/4391 cut-off events. [2023-09-01 14:00:08,451 INFO L131 PetriNetUnfolder]: For 46471/46528 co-relation queries the response was YES. [2023-09-01 14:00:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33901 conditions, 4391 events. 2969/4391 cut-off events. For 46471/46528 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21540 event pairs, 552 based on Foata normal form. 59/4438 useless extension candidates. Maximal degree in co-relation 33837. Up to 2575 conditions per place. [2023-09-01 14:00:08,486 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 483 selfloop transitions, 131 changer transitions 0/630 dead transitions. [2023-09-01 14:00:08,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 630 transitions, 9413 flow [2023-09-01 14:00:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:00:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:00:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1040 transitions. [2023-09-01 14:00:08,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2023-09-01 14:00:08,487 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1040 transitions. [2023-09-01 14:00:08,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1040 transitions. [2023-09-01 14:00:08,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:08,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1040 transitions. [2023-09-01 14:00:08,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:08,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:08,490 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:08,490 INFO L175 Difference]: Start difference. First operand has 204 places, 534 transitions, 7332 flow. Second operand 9 states and 1040 transitions. [2023-09-01 14:00:08,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 630 transitions, 9413 flow [2023-09-01 14:00:08,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 630 transitions, 9254 flow, removed 77 selfloop flow, removed 3 redundant places. [2023-09-01 14:00:08,707 INFO L231 Difference]: Finished difference. Result has 209 places, 528 transitions, 7341 flow [2023-09-01 14:00:08,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6963, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7341, PETRI_PLACES=209, PETRI_TRANSITIONS=528} [2023-09-01 14:00:08,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2023-09-01 14:00:08,708 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 528 transitions, 7341 flow [2023-09-01 14:00:08,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:08,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:08,709 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:08,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-09-01 14:00:08,913 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 [2023-09-01 14:00:08,913 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)] === [2023-09-01 14:00:08,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1498027795, now seen corresponding path program 16 times [2023-09-01 14:00:08,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:08,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511575540] [2023-09-01 14:00:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:09,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511575540] [2023-09-01 14:00:09,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511575540] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:09,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329502166] [2023-09-01 14:00:09,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 14:00:09,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:09,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:09,066 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) [2023-09-01 14:00:09,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 14:00:09,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 14:00:09,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:00:09,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:00:09,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:09,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329502166] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:09,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:09,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-09-01 14:00:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562117096] [2023-09-01 14:00:09,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:09,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 14:00:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 14:00:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-09-01 14:00:09,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-09-01 14:00:09,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 528 transitions, 7341 flow. Second operand has 20 states, 20 states have (on average 106.2) internal successors, (2124), 20 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:09,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:09,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-09-01 14:00:09,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:10,911 INFO L130 PetriNetUnfolder]: 3040/4448 cut-off events. [2023-09-01 14:00:10,911 INFO L131 PetriNetUnfolder]: For 45728/45728 co-relation queries the response was YES. [2023-09-01 14:00:10,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34479 conditions, 4448 events. 3040/4448 cut-off events. For 45728/45728 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 21174 event pairs, 246 based on Foata normal form. 28/4476 useless extension candidates. Maximal degree in co-relation 34414. Up to 1823 conditions per place. [2023-09-01 14:00:10,956 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 452 selfloop transitions, 292 changer transitions 0/744 dead transitions. [2023-09-01 14:00:10,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 744 transitions, 11231 flow [2023-09-01 14:00:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 14:00:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 14:00:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2449 transitions. [2023-09-01 14:00:10,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077589077589078 [2023-09-01 14:00:10,959 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2449 transitions. [2023-09-01 14:00:10,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2449 transitions. [2023-09-01 14:00:10,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:10,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2449 transitions. [2023-09-01 14:00:10,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 111.31818181818181) internal successors, (2449), 22 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:10,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:10,967 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:10,968 INFO L175 Difference]: Start difference. First operand has 209 places, 528 transitions, 7341 flow. Second operand 22 states and 2449 transitions. [2023-09-01 14:00:10,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 744 transitions, 11231 flow [2023-09-01 14:00:11,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 744 transitions, 11069 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-09-01 14:00:11,334 INFO L231 Difference]: Finished difference. Result has 223 places, 568 transitions, 8279 flow [2023-09-01 14:00:11,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=7181, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8279, PETRI_PLACES=223, PETRI_TRANSITIONS=568} [2023-09-01 14:00:11,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2023-09-01 14:00:11,335 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 568 transitions, 8279 flow [2023-09-01 14:00:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 106.2) internal successors, (2124), 20 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:11,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:11,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:11,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-09-01 14:00:11,535 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 [2023-09-01 14:00:11,536 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)] === [2023-09-01 14:00:11,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1332964359, now seen corresponding path program 17 times [2023-09-01 14:00:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:11,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660229181] [2023-09-01 14:00:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:11,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:11,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660229181] [2023-09-01 14:00:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660229181] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899227169] [2023-09-01 14:00:11,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 14:00:11,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:11,665 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) [2023-09-01 14:00:11,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 14:00:11,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:00:11,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:00:11,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:00:11,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:11,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899227169] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:11,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:11,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2023-09-01 14:00:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81574487] [2023-09-01 14:00:11,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:11,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 14:00:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 14:00:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-09-01 14:00:12,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-09-01 14:00:12,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 568 transitions, 8279 flow. Second operand has 19 states, 19 states have (on average 106.63157894736842) internal successors, (2026), 19 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:12,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:12,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-09-01 14:00:12,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:13,851 INFO L130 PetriNetUnfolder]: 3368/4936 cut-off events. [2023-09-01 14:00:13,851 INFO L131 PetriNetUnfolder]: For 54256/54256 co-relation queries the response was YES. [2023-09-01 14:00:13,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39120 conditions, 4936 events. 3368/4936 cut-off events. For 54256/54256 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 23996 event pairs, 299 based on Foata normal form. 28/4964 useless extension candidates. Maximal degree in co-relation 39055. Up to 2471 conditions per place. [2023-09-01 14:00:13,903 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 497 selfloop transitions, 308 changer transitions 0/805 dead transitions. [2023-09-01 14:00:13,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 805 transitions, 12720 flow [2023-09-01 14:00:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 14:00:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 14:00:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2775 transitions. [2023-09-01 14:00:13,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2023-09-01 14:00:13,906 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2775 transitions. [2023-09-01 14:00:13,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2775 transitions. [2023-09-01 14:00:13,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:13,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2775 transitions. [2023-09-01 14:00:13,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 111.0) internal successors, (2775), 25 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:13,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 273.0) internal successors, (7098), 26 states have internal predecessors, (7098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:13,915 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 273.0) internal successors, (7098), 26 states have internal predecessors, (7098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:13,915 INFO L175 Difference]: Start difference. First operand has 223 places, 568 transitions, 8279 flow. Second operand 25 states and 2775 transitions. [2023-09-01 14:00:13,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 805 transitions, 12720 flow [2023-09-01 14:00:14,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 805 transitions, 12648 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-09-01 14:00:14,284 INFO L231 Difference]: Finished difference. Result has 251 places, 621 transitions, 9779 flow [2023-09-01 14:00:14,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8207, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=9779, PETRI_PLACES=251, PETRI_TRANSITIONS=621} [2023-09-01 14:00:14,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-09-01 14:00:14,285 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 621 transitions, 9779 flow [2023-09-01 14:00:14,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.63157894736842) internal successors, (2026), 19 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:14,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:14,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:14,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-09-01 14:00:14,486 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 [2023-09-01 14:00:14,486 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)] === [2023-09-01 14:00:14,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1409097021, now seen corresponding path program 18 times [2023-09-01 14:00:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:14,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758829501] [2023-09-01 14:00:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:14,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758829501] [2023-09-01 14:00:14,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758829501] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034482282] [2023-09-01 14:00:14,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 14:00:14,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:14,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:14,609 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) [2023-09-01 14:00:14,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-09-01 14:00:14,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 14:00:14,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:00:14,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:00:14,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:14,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:15,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034482282] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:15,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:15,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-09-01 14:00:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739754885] [2023-09-01 14:00:15,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 14:00:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 14:00:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-09-01 14:00:15,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 14:00:15,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 621 transitions, 9779 flow. Second operand has 21 states, 21 states have (on average 110.04761904761905) internal successors, (2311), 21 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:15,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:15,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 14:00:15,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:16,539 INFO L130 PetriNetUnfolder]: 3245/4794 cut-off events. [2023-09-01 14:00:16,539 INFO L131 PetriNetUnfolder]: For 58038/58100 co-relation queries the response was YES. [2023-09-01 14:00:16,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39440 conditions, 4794 events. 3245/4794 cut-off events. For 58038/58100 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 23753 event pairs, 332 based on Foata normal form. 43/4823 useless extension candidates. Maximal degree in co-relation 39366. Up to 2017 conditions per place. [2023-09-01 14:00:16,588 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 450 selfloop transitions, 320 changer transitions 0/795 dead transitions. [2023-09-01 14:00:16,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 795 transitions, 12986 flow [2023-09-01 14:00:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 14:00:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 14:00:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1753 transitions. [2023-09-01 14:00:16,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42808302808302806 [2023-09-01 14:00:16,590 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1753 transitions. [2023-09-01 14:00:16,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1753 transitions. [2023-09-01 14:00:16,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:16,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1753 transitions. [2023-09-01 14:00:16,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.86666666666666) internal successors, (1753), 15 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:16,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:16,594 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:16,594 INFO L175 Difference]: Start difference. First operand has 251 places, 621 transitions, 9779 flow. Second operand 15 states and 1753 transitions. [2023-09-01 14:00:16,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 795 transitions, 12986 flow [2023-09-01 14:00:16,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 795 transitions, 12442 flow, removed 29 selfloop flow, removed 12 redundant places. [2023-09-01 14:00:16,985 INFO L231 Difference]: Finished difference. Result has 253 places, 628 transitions, 10020 flow [2023-09-01 14:00:16,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=9230, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10020, PETRI_PLACES=253, PETRI_TRANSITIONS=628} [2023-09-01 14:00:16,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2023-09-01 14:00:16,986 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 628 transitions, 10020 flow [2023-09-01 14:00:16,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.04761904761905) internal successors, (2311), 21 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:16,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:16,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:16,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-09-01 14:00:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 14:00:17,187 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:00:17,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -996717881, now seen corresponding path program 19 times [2023-09-01 14:00:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716690311] [2023-09-01 14:00:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716690311] [2023-09-01 14:00:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716690311] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652965828] [2023-09-01 14:00:17,292 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 14:00:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:17,293 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:00:17,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-09-01 14:00:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:17,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:00:17,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:17,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:00:17,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652965828] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:00:17,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:00:17,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-09-01 14:00:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935774444] [2023-09-01 14:00:17,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:00:17,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 14:00:17,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 14:00:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-09-01 14:00:17,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-09-01 14:00:17,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 628 transitions, 10020 flow. Second operand has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:17,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:17,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-09-01 14:00:17,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:18,889 INFO L130 PetriNetUnfolder]: 3205/4718 cut-off events. [2023-09-01 14:00:18,889 INFO L131 PetriNetUnfolder]: For 58657/58713 co-relation queries the response was YES. [2023-09-01 14:00:18,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39047 conditions, 4718 events. 3205/4718 cut-off events. For 58657/58713 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 23163 event pairs, 372 based on Foata normal form. 43/4749 useless extension candidates. Maximal degree in co-relation 38973. Up to 2034 conditions per place. [2023-09-01 14:00:18,941 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 420 selfloop transitions, 268 changer transitions 0/713 dead transitions. [2023-09-01 14:00:18,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 713 transitions, 12231 flow [2023-09-01 14:00:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:00:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:00:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1039 transitions. [2023-09-01 14:00:18,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228734228734229 [2023-09-01 14:00:18,943 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1039 transitions. [2023-09-01 14:00:18,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1039 transitions. [2023-09-01 14:00:18,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:18,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1039 transitions. [2023-09-01 14:00:18,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.44444444444444) internal successors, (1039), 9 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:18,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:18,946 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:18,947 INFO L175 Difference]: Start difference. First operand has 253 places, 628 transitions, 10020 flow. Second operand 9 states and 1039 transitions. [2023-09-01 14:00:18,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 713 transitions, 12231 flow [2023-09-01 14:00:19,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 713 transitions, 11581 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-09-01 14:00:19,310 INFO L231 Difference]: Finished difference. Result has 249 places, 631 transitions, 10211 flow [2023-09-01 14:00:19,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=9353, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10211, PETRI_PLACES=249, PETRI_TRANSITIONS=631} [2023-09-01 14:00:19,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2023-09-01 14:00:19,311 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 631 transitions, 10211 flow [2023-09-01 14:00:19,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:19,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:19,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:19,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-09-01 14:00:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:19,512 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:00:19,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash -294499073, now seen corresponding path program 3 times [2023-09-01 14:00:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899292064] [2023-09-01 14:00:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:19,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:20,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:20,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899292064] [2023-09-01 14:00:20,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899292064] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:20,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298945567] [2023-09-01 14:00:20,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:00:20,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:20,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:20,376 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:00:20,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-09-01 14:00:20,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 14:00:20,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:00:20,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 44 conjunts are in the unsatisfiable core [2023-09-01 14:00:20,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:21,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:00:21,675 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 143 treesize of output 89 [2023-09-01 14:00:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:22,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:23,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:00:23,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 387 treesize of output 623 [2023-09-01 14:00:52,719 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:01:05,322 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 14:01:41,023 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:02:09,366 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:02:43,723 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:02:54,339 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 14:03:34,636 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:04:05,861 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:04:39,925 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:05:19,897 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:07:27,317 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:08:31,991 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:09:19,582 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:09:49,770 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 14:10:43,369 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:11:13,636 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. Killed by 15