./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-array-sum2.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 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 02:54:33,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 02:54:33,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 02:54:33,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 02:54:33,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 02:54:33,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 02:54:33,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 02:54:33,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 02:54:33,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 02:54:33,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 02:54:33,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 02:54:33,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 02:54:33,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 02:54:33,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 02:54:33,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 02:54:33,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 02:54:33,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 02:54:33,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 02:54:33,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 02:54:33,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 02:54:33,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 02:54:33,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 02:54:33,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 02:54:33,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 02:54:34,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 02:54:34,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 02:54:34,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 02:54:34,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 02:54:34,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 02:54:34,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 02:54:34,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 02:54:34,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 02:54:34,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 02:54:34,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 02:54:34,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 02:54:34,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 02:54:34,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 02:54:34,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 02:54:34,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 02:54:34,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 02:54:34,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 02:54:34,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 02:54:34,049 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 02:54:34,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 02:54:34,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 02:54:34,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 02:54:34,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 02:54:34,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 02:54:34,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 02:54:34,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 02:54:34,052 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 02:54:34,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 02:54:34,053 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 02:54:34,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 02:54:34,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 02:54:34,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 02:54:34,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 02:54:34,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 02:54:34,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 02:54:34,054 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 02:54:34,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 02:54:34,055 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 02:54:34,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 02:54:34,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 02:54:34,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 02:54:34,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 02:54:34,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:54:34,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 02:54:34,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 02:54:34,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 02:54:34,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 02:54:34,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 02:54:34,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 02:54:34,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 02:54:34,058 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 02:54:34,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 02:54:34,058 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 02:54:34,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 02:54:34,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 02:54:34,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 02:54:34,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 02:54:34,385 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 02:54:34,385 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 02:54:34,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-08-31 02:54:35,471 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 02:54:35,700 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 02:54:35,700 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-08-31 02:54:35,707 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8111eb672/bae02ba0b87f448e91728ac1d6b747eb/FLAG2bdf764aa [2023-08-31 02:54:35,722 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8111eb672/bae02ba0b87f448e91728ac1d6b747eb [2023-08-31 02:54:35,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 02:54:35,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 02:54:35,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 02:54:35,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 02:54:35,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 02:54:35,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:54:35" (1/1) ... [2023-08-31 02:54:35,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c55b119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:35, skipping insertion in model container [2023-08-31 02:54:35,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:54:35" (1/1) ... [2023-08-31 02:54:35,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 02:54:35,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 02:54:35,934 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-array-sum2.wvr.c[2599,2612] [2023-08-31 02:54:35,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:54:35,974 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 02:54:36,015 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-array-sum2.wvr.c[2599,2612] [2023-08-31 02:54:36,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:54:36,036 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:54:36,037 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:54:36,043 INFO L208 MainTranslator]: Completed translation [2023-08-31 02:54:36,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36 WrapperNode [2023-08-31 02:54:36,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 02:54:36,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 02:54:36,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 02:54:36,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 02:54:36,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,119 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 275 [2023-08-31 02:54:36,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 02:54:36,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 02:54:36,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 02:54:36,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 02:54:36,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 02:54:36,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 02:54:36,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 02:54:36,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 02:54:36,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (1/1) ... [2023-08-31 02:54:36,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:54:36,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:54:36,218 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) [2023-08-31 02:54:36,245 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 [2023-08-31 02:54:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 02:54:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 02:54:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 02:54:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 02:54:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 02:54:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 02:54:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 02:54:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 02:54:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 02:54:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 02:54:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 02:54:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 02:54:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 02:54:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 02:54:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 02:54:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 02:54:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 02:54:36,267 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 02:54:36,370 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 02:54:36,372 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 02:54:36,792 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 02:54:37,024 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 02:54:37,025 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-31 02:54:37,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:54:37 BoogieIcfgContainer [2023-08-31 02:54:37,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 02:54:37,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 02:54:37,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 02:54:37,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 02:54:37,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 02:54:35" (1/3) ... [2023-08-31 02:54:37,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29871f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:54:37, skipping insertion in model container [2023-08-31 02:54:37,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:54:36" (2/3) ... [2023-08-31 02:54:37,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29871f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:54:37, skipping insertion in model container [2023-08-31 02:54:37,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:54:37" (3/3) ... [2023-08-31 02:54:37,035 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-08-31 02:54:37,041 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 02:54:37,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 02:54:37,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 02:54:37,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 02:54:37,104 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 02:54:37,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 384 flow [2023-08-31 02:54:37,236 INFO L130 PetriNetUnfolder]: 16/177 cut-off events. [2023-08-31 02:54:37,237 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:54:37,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 16/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-08-31 02:54:37,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 384 flow [2023-08-31 02:54:37,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 352 flow [2023-08-31 02:54:37,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 02:54:37,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 167 transitions, 352 flow [2023-08-31 02:54:37,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 167 transitions, 352 flow [2023-08-31 02:54:37,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 167 transitions, 352 flow [2023-08-31 02:54:37,305 INFO L130 PetriNetUnfolder]: 16/167 cut-off events. [2023-08-31 02:54:37,305 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:54:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 16/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-08-31 02:54:37,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-08-31 02:54:43,488 INFO L134 LiptonReduction]: Checked pairs total: 1529 [2023-08-31 02:54:43,488 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-31 02:54:43,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 02:54:43,507 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;@1bbf51ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 02:54:43,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 02:54:43,513 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-08-31 02:54:43,513 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:54:43,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:54:43,514 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] [2023-08-31 02:54:43,515 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)] === [2023-08-31 02:54:43,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:54:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash -118065051, now seen corresponding path program 1 times [2023-08-31 02:54:43,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:54:43,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061546670] [2023-08-31 02:54:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:54:43,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:54:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:54:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:54:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:54:44,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061546670] [2023-08-31 02:54:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061546670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:54:44,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:54:44,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 02:54:44,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688674321] [2023-08-31 02:54:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:54:44,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:54:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:54:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:54:44,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:54:44,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-08-31 02:54:44,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:44,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:54:44,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-08-31 02:54:44,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:54:44,361 INFO L130 PetriNetUnfolder]: 343/476 cut-off events. [2023-08-31 02:54:44,361 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-31 02:54:44,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 476 events. 343/476 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1477 event pairs, 133 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-08-31 02:54:44,370 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 31 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-31 02:54:44,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 164 flow [2023-08-31 02:54:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:54:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:54:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-08-31 02:54:44,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45538243626062325 [2023-08-31 02:54:44,394 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-08-31 02:54:44,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-08-31 02:54:44,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:54:44,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-08-31 02:54:44,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:44,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:44,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:44,415 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 70 flow. Second operand 4 states and 643 transitions. [2023-08-31 02:54:44,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 164 flow [2023-08-31 02:54:44,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 02:54:44,421 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 72 flow [2023-08-31 02:54:44,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-08-31 02:54:44,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-08-31 02:54:44,429 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 72 flow [2023-08-31 02:54:44,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:44,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:54:44,432 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] [2023-08-31 02:54:44,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 02:54:44,433 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)] === [2023-08-31 02:54:44,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:54:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash -628194304, now seen corresponding path program 1 times [2023-08-31 02:54:44,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:54:44,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343264153] [2023-08-31 02:54:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:54:44,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:54:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:54:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:54:44,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:54:44,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343264153] [2023-08-31 02:54:44,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343264153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:54:44,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:54:44,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 02:54:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144721792] [2023-08-31 02:54:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:54:44,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 02:54:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:54:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 02:54:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 02:54:44,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-31 02:54:44,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:44,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:54:44,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-31 02:54:44,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:54:45,028 INFO L130 PetriNetUnfolder]: 344/481 cut-off events. [2023-08-31 02:54:45,028 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-31 02:54:45,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 481 events. 344/481 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1492 event pairs, 133 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 323. Up to 373 conditions per place. [2023-08-31 02:54:45,032 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 31 selfloop transitions, 5 changer transitions 3/41 dead transitions. [2023-08-31 02:54:45,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 180 flow [2023-08-31 02:54:45,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 02:54:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 02:54:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 899 transitions. [2023-08-31 02:54:45,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42445703493862136 [2023-08-31 02:54:45,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 899 transitions. [2023-08-31 02:54:45,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 899 transitions. [2023-08-31 02:54:45,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:54:45,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 899 transitions. [2023-08-31 02:54:45,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,042 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 72 flow. Second operand 6 states and 899 transitions. [2023-08-31 02:54:45,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 180 flow [2023-08-31 02:54:45,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 02:54:45,064 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 96 flow [2023-08-31 02:54:45,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-31 02:54:45,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-08-31 02:54:45,066 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 96 flow [2023-08-31 02:54:45,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:54:45,067 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] [2023-08-31 02:54:45,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 02:54:45,067 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)] === [2023-08-31 02:54:45,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:54:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1446722701, now seen corresponding path program 1 times [2023-08-31 02:54:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:54:45,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623979932] [2023-08-31 02:54:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:54:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:54:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:54:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:54:45,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:54:45,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623979932] [2023-08-31 02:54:45,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623979932] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:54:45,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425744297] [2023-08-31 02:54:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:54:45,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:54:45,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:54:45,205 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) [2023-08-31 02:54:45,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 02:54:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:54:45,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 02:54:45,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:54:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:54:45,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:54:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:54:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425744297] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 02:54:45,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 02:54:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-31 02:54:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562720054] [2023-08-31 02:54:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:54:45,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 02:54:45,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:54:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 02:54:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 02:54:45,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 353 [2023-08-31 02:54:45,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:54:45,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 353 [2023-08-31 02:54:45,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:54:45,670 INFO L130 PetriNetUnfolder]: 312/453 cut-off events. [2023-08-31 02:54:45,670 INFO L131 PetriNetUnfolder]: For 114/150 co-relation queries the response was YES. [2023-08-31 02:54:45,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 453 events. 312/453 cut-off events. For 114/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1498 event pairs, 134 based on Foata normal form. 36/382 useless extension candidates. Maximal degree in co-relation 1003. Up to 352 conditions per place. [2023-08-31 02:54:45,673 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 34 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-31 02:54:45,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-08-31 02:54:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:54:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:54:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-08-31 02:54:45,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198300283286119 [2023-08-31 02:54:45,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-08-31 02:54:45,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-08-31 02:54:45,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:54:45,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-08-31 02:54:45,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,683 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 96 flow. Second operand 5 states and 741 transitions. [2023-08-31 02:54:45,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-08-31 02:54:45,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 196 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-31 02:54:45,686 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 106 flow [2023-08-31 02:54:45,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-31 02:54:45,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-31 02:54:45,688 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 106 flow [2023-08-31 02:54:45,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:54:45,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:54:45,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:54:45,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 02:54:45,894 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 [2023-08-31 02:54:45,895 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)] === [2023-08-31 02:54:45,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:54:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash 768134593, now seen corresponding path program 1 times [2023-08-31 02:54:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:54:45,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182708974] [2023-08-31 02:54:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:54:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:54:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:54:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:54:47,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:54:47,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182708974] [2023-08-31 02:54:47,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182708974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:54:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342144734] [2023-08-31 02:54:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:54:47,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:54:47,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:54:47,916 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) [2023-08-31 02:54:47,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 02:54:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:54:48,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 75 conjunts are in the unsatisfiable core [2023-08-31 02:54:48,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:54:48,303 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 [2023-08-31 02:54:48,383 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 [2023-08-31 02:54:48,462 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 [2023-08-31 02:54:48,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:54:48,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:54:48,793 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 02:54:48,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-31 02:54:48,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:54:48,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 81 [2023-08-31 02:54:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:54:49,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:54:49,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:54:49,802 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 111 treesize of output 76 [2023-08-31 02:54:49,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:54:49,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 9568246 treesize of output 8519738 [2023-08-31 02:54:50,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:54:50,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2070 treesize of output 1966 [2023-08-31 02:54:50,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:54:50,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1910 treesize of output 1646 [2023-08-31 02:54:51,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:54:51,014 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 1590 treesize of output 1214 [2023-08-31 02:56:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:56:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342144734] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:56:08,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:56:08,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2023-08-31 02:56:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426578429] [2023-08-31 02:56:08,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:56:08,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-31 02:56:08,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:56:08,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-31 02:56:08,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1454, Unknown=21, NotChecked=0, Total=1640 [2023-08-31 02:56:10,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-08-31 02:56:10,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 106 flow. Second operand has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:10,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:56:10,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-08-31 02:56:10,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:56:14,877 INFO L130 PetriNetUnfolder]: 1358/2022 cut-off events. [2023-08-31 02:56:14,877 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2023-08-31 02:56:14,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 2022 events. 1358/2022 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8523 event pairs, 124 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 3147. Up to 853 conditions per place. [2023-08-31 02:56:14,886 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 195 selfloop transitions, 89 changer transitions 4/288 dead transitions. [2023-08-31 02:56:14,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 288 transitions, 1407 flow [2023-08-31 02:56:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-31 02:56:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-31 02:56:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3156 transitions. [2023-08-31 02:56:14,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25544314042897615 [2023-08-31 02:56:14,896 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3156 transitions. [2023-08-31 02:56:14,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3156 transitions. [2023-08-31 02:56:14,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:56:14,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3156 transitions. [2023-08-31 02:56:14,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 90.17142857142858) internal successors, (3156), 35 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:14,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:14,921 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:14,921 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 106 flow. Second operand 35 states and 3156 transitions. [2023-08-31 02:56:14,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 288 transitions, 1407 flow [2023-08-31 02:56:14,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 288 transitions, 1383 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-31 02:56:14,929 INFO L231 Difference]: Finished difference. Result has 77 places, 115 transitions, 618 flow [2023-08-31 02:56:14,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=618, PETRI_PLACES=77, PETRI_TRANSITIONS=115} [2023-08-31 02:56:14,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2023-08-31 02:56:14,930 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 115 transitions, 618 flow [2023-08-31 02:56:14,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:14,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:56:14,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:56:14,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 02:56:15,137 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 [2023-08-31 02:56:15,138 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)] === [2023-08-31 02:56:15,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:56:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash -644630665, now seen corresponding path program 2 times [2023-08-31 02:56:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:56:15,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882785619] [2023-08-31 02:56:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:56:15,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:56:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:56:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:56:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:56:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882785619] [2023-08-31 02:56:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882785619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:56:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285159107] [2023-08-31 02:56:16,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 02:56:16,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:56:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:56:16,421 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) [2023-08-31 02:56:16,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 02:56:16,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 02:56:16,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:56:16,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-31 02:56:16,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:56:17,044 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-31 02:56:17,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-08-31 02:56:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:17,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:56:17,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:17,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-08-31 02:56:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:17,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285159107] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:56:17,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:56:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-08-31 02:56:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342469083] [2023-08-31 02:56:17,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:56:17,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-31 02:56:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:56:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-31 02:56:17,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2023-08-31 02:56:19,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-31 02:56:19,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 115 transitions, 618 flow. Second operand has 34 states, 34 states have (on average 112.79411764705883) internal successors, (3835), 34 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:19,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:56:19,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-31 02:56:19,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:56:23,346 INFO L130 PetriNetUnfolder]: 2763/4217 cut-off events. [2023-08-31 02:56:23,346 INFO L131 PetriNetUnfolder]: For 5950/5950 co-relation queries the response was YES. [2023-08-31 02:56:23,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 4217 events. 2763/4217 cut-off events. For 5950/5950 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21647 event pairs, 162 based on Foata normal form. 46/4257 useless extension candidates. Maximal degree in co-relation 13956. Up to 1788 conditions per place. [2023-08-31 02:56:23,374 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 238 selfloop transitions, 227 changer transitions 23/488 dead transitions. [2023-08-31 02:56:23,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 488 transitions, 3349 flow [2023-08-31 02:56:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-31 02:56:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-31 02:56:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5526 transitions. [2023-08-31 02:56:23,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33307214754987646 [2023-08-31 02:56:23,391 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5526 transitions. [2023-08-31 02:56:23,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5526 transitions. [2023-08-31 02:56:23,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:56:23,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5526 transitions. [2023-08-31 02:56:23,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 117.57446808510639) internal successors, (5526), 47 states have internal predecessors, (5526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:23,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:23,433 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:23,434 INFO L175 Difference]: Start difference. First operand has 77 places, 115 transitions, 618 flow. Second operand 47 states and 5526 transitions. [2023-08-31 02:56:23,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 488 transitions, 3349 flow [2023-08-31 02:56:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 488 transitions, 3210 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-08-31 02:56:23,463 INFO L231 Difference]: Finished difference. Result has 138 places, 321 transitions, 2430 flow [2023-08-31 02:56:23,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2430, PETRI_PLACES=138, PETRI_TRANSITIONS=321} [2023-08-31 02:56:23,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2023-08-31 02:56:23,466 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 321 transitions, 2430 flow [2023-08-31 02:56:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 112.79411764705883) internal successors, (3835), 34 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:23,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:56:23,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:56:23,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 02:56:23,679 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 [2023-08-31 02:56:23,680 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)] === [2023-08-31 02:56:23,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:56:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1317014283, now seen corresponding path program 3 times [2023-08-31 02:56:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:56:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815187706] [2023-08-31 02:56:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:56:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:56:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:56:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:56:24,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:56:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815187706] [2023-08-31 02:56:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815187706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:56:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460893647] [2023-08-31 02:56:24,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 02:56:24,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:56:24,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:56:24,868 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) [2023-08-31 02:56:24,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 02:56:24,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 02:56:24,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:56:24,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-31 02:56:24,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:56:25,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:25,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-08-31 02:56:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:25,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:56:25,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:25,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-08-31 02:56:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460893647] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:56:25,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:56:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-08-31 02:56:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659412063] [2023-08-31 02:56:25,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:56:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 02:56:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:56:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 02:56:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2023-08-31 02:56:27,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-31 02:56:27,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 321 transitions, 2430 flow. Second operand has 31 states, 31 states have (on average 112.87096774193549) internal successors, (3499), 31 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:27,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:56:27,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-31 02:56:27,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:56:28,798 INFO L130 PetriNetUnfolder]: 3091/4725 cut-off events. [2023-08-31 02:56:28,798 INFO L131 PetriNetUnfolder]: For 20115/20115 co-relation queries the response was YES. [2023-08-31 02:56:28,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22519 conditions, 4725 events. 3091/4725 cut-off events. For 20115/20115 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24498 event pairs, 512 based on Foata normal form. 1/4717 useless extension candidates. Maximal degree in co-relation 22443. Up to 3936 conditions per place. [2023-08-31 02:56:28,848 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 280 selfloop transitions, 178 changer transitions 1/459 dead transitions. [2023-08-31 02:56:28,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 459 transitions, 4361 flow [2023-08-31 02:56:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 02:56:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 02:56:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1880 transitions. [2023-08-31 02:56:28,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328611898016997 [2023-08-31 02:56:28,854 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1880 transitions. [2023-08-31 02:56:28,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1880 transitions. [2023-08-31 02:56:28,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:56:28,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1880 transitions. [2023-08-31 02:56:28,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 117.5) internal successors, (1880), 16 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:28,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:28,867 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:28,867 INFO L175 Difference]: Start difference. First operand has 138 places, 321 transitions, 2430 flow. Second operand 16 states and 1880 transitions. [2023-08-31 02:56:28,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 459 transitions, 4361 flow [2023-08-31 02:56:28,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 459 transitions, 4023 flow, removed 158 selfloop flow, removed 8 redundant places. [2023-08-31 02:56:28,960 INFO L231 Difference]: Finished difference. Result has 151 places, 403 transitions, 3362 flow [2023-08-31 02:56:28,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3362, PETRI_PLACES=151, PETRI_TRANSITIONS=403} [2023-08-31 02:56:28,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2023-08-31 02:56:28,962 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 403 transitions, 3362 flow [2023-08-31 02:56:28,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.87096774193549) internal successors, (3499), 31 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:28,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:56:28,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:56:28,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-31 02:56:29,169 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 [2023-08-31 02:56:29,169 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)] === [2023-08-31 02:56:29,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:56:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1906045491, now seen corresponding path program 4 times [2023-08-31 02:56:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:56:29,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212613243] [2023-08-31 02:56:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:56:29,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:56:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:56:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:56:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:56:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212613243] [2023-08-31 02:56:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212613243] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:56:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707027397] [2023-08-31 02:56:30,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 02:56:30,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:56:30,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:56:30,593 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) [2023-08-31 02:56:30,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 02:56:30,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 02:56:30,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:56:30,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-31 02:56:30,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:56:31,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:31,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-08-31 02:56:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:31,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:56:31,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:31,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-08-31 02:56:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:31,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707027397] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:56:31,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:56:31,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-08-31 02:56:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574489436] [2023-08-31 02:56:31,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:56:31,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 02:56:31,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:56:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 02:56:31,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-08-31 02:56:33,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-31 02:56:33,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 403 transitions, 3362 flow. Second operand has 31 states, 31 states have (on average 112.83870967741936) internal successors, (3498), 31 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:33,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:56:33,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-31 02:56:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:56:34,704 INFO L130 PetriNetUnfolder]: 3211/4940 cut-off events. [2023-08-31 02:56:34,704 INFO L131 PetriNetUnfolder]: For 25595/25595 co-relation queries the response was YES. [2023-08-31 02:56:34,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24901 conditions, 4940 events. 3211/4940 cut-off events. For 25595/25595 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26145 event pairs, 523 based on Foata normal form. 1/4933 useless extension candidates. Maximal degree in co-relation 24772. Up to 4245 conditions per place. [2023-08-31 02:56:34,748 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 281 selfloop transitions, 239 changer transitions 6/526 dead transitions. [2023-08-31 02:56:34,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 526 transitions, 5497 flow [2023-08-31 02:56:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 02:56:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 02:56:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1980 transitions. [2023-08-31 02:56:34,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32994500916513914 [2023-08-31 02:56:34,753 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1980 transitions. [2023-08-31 02:56:34,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1980 transitions. [2023-08-31 02:56:34,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:56:34,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1980 transitions. [2023-08-31 02:56:34,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 116.47058823529412) internal successors, (1980), 17 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:34,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:34,765 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:34,765 INFO L175 Difference]: Start difference. First operand has 151 places, 403 transitions, 3362 flow. Second operand 17 states and 1980 transitions. [2023-08-31 02:56:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 526 transitions, 5497 flow [2023-08-31 02:56:34,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 526 transitions, 5368 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-08-31 02:56:34,889 INFO L231 Difference]: Finished difference. Result has 167 places, 489 transitions, 4810 flow [2023-08-31 02:56:34,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4810, PETRI_PLACES=167, PETRI_TRANSITIONS=489} [2023-08-31 02:56:34,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2023-08-31 02:56:34,891 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 489 transitions, 4810 flow [2023-08-31 02:56:34,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.83870967741936) internal successors, (3498), 31 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:34,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:56:34,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:56:34,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 02:56:35,096 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 [2023-08-31 02:56:35,097 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)] === [2023-08-31 02:56:35,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:56:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1960108977, now seen corresponding path program 5 times [2023-08-31 02:56:35,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:56:35,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388617840] [2023-08-31 02:56:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:56:35,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:56:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:56:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:56:36,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:56:36,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388617840] [2023-08-31 02:56:36,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388617840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:56:36,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621164070] [2023-08-31 02:56:36,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 02:56:36,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:56:36,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:56:36,614 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) [2023-08-31 02:56:36,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 02:56:36,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 02:56:36,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:56:36,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-31 02:56:36,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:56:37,131 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 02:56:37,149 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-08-31 02:56:37,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-08-31 02:56:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:37,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:56:37,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:37,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-08-31 02:56:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:37,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621164070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:56:37,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:56:37,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-08-31 02:56:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287484731] [2023-08-31 02:56:37,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:56:37,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-31 02:56:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:56:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-31 02:56:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-08-31 02:56:39,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-31 02:56:39,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 489 transitions, 4810 flow. Second operand has 30 states, 30 states have (on average 114.03333333333333) internal successors, (3421), 30 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:39,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:56:39,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-31 02:56:39,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:56:43,170 INFO L130 PetriNetUnfolder]: 4979/7630 cut-off events. [2023-08-31 02:56:43,170 INFO L131 PetriNetUnfolder]: For 46355/46355 co-relation queries the response was YES. [2023-08-31 02:56:43,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40374 conditions, 7630 events. 4979/7630 cut-off events. For 46355/46355 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 43784 event pairs, 508 based on Foata normal form. 5/7627 useless extension candidates. Maximal degree in co-relation 40161. Up to 2317 conditions per place. [2023-08-31 02:56:43,233 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 345 selfloop transitions, 531 changer transitions 17/893 dead transitions. [2023-08-31 02:56:43,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 893 transitions, 9731 flow [2023-08-31 02:56:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-31 02:56:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-31 02:56:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 5132 transitions. [2023-08-31 02:56:43,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33809868897819356 [2023-08-31 02:56:43,244 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 5132 transitions. [2023-08-31 02:56:43,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 5132 transitions. [2023-08-31 02:56:43,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:56:43,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 5132 transitions. [2023-08-31 02:56:43,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 119.34883720930233) internal successors, (5132), 43 states have internal predecessors, (5132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:43,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:43,268 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:43,269 INFO L175 Difference]: Start difference. First operand has 167 places, 489 transitions, 4810 flow. Second operand 43 states and 5132 transitions. [2023-08-31 02:56:43,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 893 transitions, 9731 flow [2023-08-31 02:56:43,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 893 transitions, 9446 flow, removed 111 selfloop flow, removed 5 redundant places. [2023-08-31 02:56:43,511 INFO L231 Difference]: Finished difference. Result has 220 places, 681 transitions, 8172 flow [2023-08-31 02:56:43,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8172, PETRI_PLACES=220, PETRI_TRANSITIONS=681} [2023-08-31 02:56:43,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2023-08-31 02:56:43,512 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 681 transitions, 8172 flow [2023-08-31 02:56:43,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 114.03333333333333) internal successors, (3421), 30 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:43,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:56:43,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:56:43,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 02:56:43,720 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 [2023-08-31 02:56:43,721 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)] === [2023-08-31 02:56:43,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:56:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -555652735, now seen corresponding path program 6 times [2023-08-31 02:56:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:56:43,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103163277] [2023-08-31 02:56:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:56:43,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:56:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:56:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:56:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:56:44,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103163277] [2023-08-31 02:56:44,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103163277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:56:44,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654470943] [2023-08-31 02:56:44,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 02:56:44,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:56:44,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:56:44,701 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) [2023-08-31 02:56:44,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 02:56:44,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 02:56:44,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:56:44,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-31 02:56:44,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:56:45,414 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-31 02:56:45,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-08-31 02:56:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:45,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:56:45,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:45,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-08-31 02:56:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:46,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654470943] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:56:46,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:56:46,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-08-31 02:56:46,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449669333] [2023-08-31 02:56:46,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:56:46,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-31 02:56:46,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:56:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-31 02:56:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-08-31 02:56:48,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-31 02:56:48,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 681 transitions, 8172 flow. Second operand has 34 states, 34 states have (on average 112.82352941176471) internal successors, (3836), 34 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:48,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:56:48,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-31 02:56:48,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:56:52,258 INFO L130 PetriNetUnfolder]: 7403/11343 cut-off events. [2023-08-31 02:56:52,258 INFO L131 PetriNetUnfolder]: For 79052/79052 co-relation queries the response was YES. [2023-08-31 02:56:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66375 conditions, 11343 events. 7403/11343 cut-off events. For 79052/79052 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 69831 event pairs, 394 based on Foata normal form. 2/11343 useless extension candidates. Maximal degree in co-relation 66177. Up to 4430 conditions per place. [2023-08-31 02:56:52,349 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 516 selfloop transitions, 735 changer transitions 10/1261 dead transitions. [2023-08-31 02:56:52,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1261 transitions, 16505 flow [2023-08-31 02:56:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-31 02:56:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-31 02:56:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4621 transitions. [2023-08-31 02:56:52,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3356577322582988 [2023-08-31 02:56:52,356 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4621 transitions. [2023-08-31 02:56:52,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4621 transitions. [2023-08-31 02:56:52,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:56:52,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4621 transitions. [2023-08-31 02:56:52,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 118.48717948717949) internal successors, (4621), 39 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:52,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:52,373 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:52,373 INFO L175 Difference]: Start difference. First operand has 220 places, 681 transitions, 8172 flow. Second operand 39 states and 4621 transitions. [2023-08-31 02:56:52,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1261 transitions, 16505 flow [2023-08-31 02:56:52,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1261 transitions, 15629 flow, removed 331 selfloop flow, removed 14 redundant places. [2023-08-31 02:56:53,004 INFO L231 Difference]: Finished difference. Result has 266 places, 1071 transitions, 14974 flow [2023-08-31 02:56:53,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14974, PETRI_PLACES=266, PETRI_TRANSITIONS=1071} [2023-08-31 02:56:53,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2023-08-31 02:56:53,006 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 1071 transitions, 14974 flow [2023-08-31 02:56:53,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 112.82352941176471) internal successors, (3836), 34 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:53,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:56:53,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:56:53,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 02:56:53,213 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 [2023-08-31 02:56:53,213 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)] === [2023-08-31 02:56:53,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:56:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash 539869495, now seen corresponding path program 7 times [2023-08-31 02:56:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:56:53,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54344415] [2023-08-31 02:56:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:56:53,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:56:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:56:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:56:54,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:56:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54344415] [2023-08-31 02:56:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54344415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:56:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407222552] [2023-08-31 02:56:54,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 02:56:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:56:54,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:56:54,521 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) [2023-08-31 02:56:54,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 02:56:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:56:54,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-31 02:56:54,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:56:55,038 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 02:56:55,056 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-08-31 02:56:55,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-08-31 02:56:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:55,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:56:55,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:56:55,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-08-31 02:56:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:56:55,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407222552] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:56:55,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:56:55,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-08-31 02:56:55,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877290603] [2023-08-31 02:56:55,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:56:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-31 02:56:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:56:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-31 02:56:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-08-31 02:56:57,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-31 02:56:57,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1071 transitions, 14974 flow. Second operand has 30 states, 30 states have (on average 114.0) internal successors, (3420), 30 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:56:57,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:56:57,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-31 02:56:57,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:57:01,822 INFO L130 PetriNetUnfolder]: 7704/11866 cut-off events. [2023-08-31 02:57:01,823 INFO L131 PetriNetUnfolder]: For 127931/127931 co-relation queries the response was YES. [2023-08-31 02:57:01,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80676 conditions, 11866 events. 7704/11866 cut-off events. For 127931/127931 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 73630 event pairs, 1190 based on Foata normal form. 2/11866 useless extension candidates. Maximal degree in co-relation 80197. Up to 9995 conditions per place. [2023-08-31 02:57:01,940 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 792 selfloop transitions, 436 changer transitions 3/1231 dead transitions. [2023-08-31 02:57:01,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1231 transitions, 19249 flow [2023-08-31 02:57:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-31 02:57:01,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-31 02:57:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3556 transitions. [2023-08-31 02:57:01,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33578847969782816 [2023-08-31 02:57:01,946 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3556 transitions. [2023-08-31 02:57:01,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3556 transitions. [2023-08-31 02:57:01,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:57:01,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3556 transitions. [2023-08-31 02:57:01,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 118.53333333333333) internal successors, (3556), 30 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:57:01,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:57:01,960 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:57:01,960 INFO L175 Difference]: Start difference. First operand has 266 places, 1071 transitions, 14974 flow. Second operand 30 states and 3556 transitions. [2023-08-31 02:57:01,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1231 transitions, 19249 flow [2023-08-31 02:57:02,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1231 transitions, 18908 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-08-31 02:57:02,961 INFO L231 Difference]: Finished difference. Result has 288 places, 1115 transitions, 16568 flow [2023-08-31 02:57:02,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=14641, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16568, PETRI_PLACES=288, PETRI_TRANSITIONS=1115} [2023-08-31 02:57:02,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2023-08-31 02:57:02,963 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1115 transitions, 16568 flow [2023-08-31 02:57:02,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 114.0) internal successors, (3420), 30 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:57:02,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:57:02,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:57:02,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-31 02:57:03,175 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 [2023-08-31 02:57:03,175 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)] === [2023-08-31 02:57:03,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:57:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash -680043111, now seen corresponding path program 8 times [2023-08-31 02:57:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:57:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087629840] [2023-08-31 02:57:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:57:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:57:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:57:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:57:04,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:57:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087629840] [2023-08-31 02:57:04,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087629840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:57:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752300285] [2023-08-31 02:57:04,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 02:57:04,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:57:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:57:04,624 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) [2023-08-31 02:57:04,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 02:57:04,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 02:57:04,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:57:04,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-31 02:57:04,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:57:04,984 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 [2023-08-31 02:57:05,063 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 [2023-08-31 02:57:05,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:57:05,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:57:05,352 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 02:57:05,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-31 02:57:05,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:57:05,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:57:05,451 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 02:57:05,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-31 02:57:05,622 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-31 02:57:05,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-08-31 02:57:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:57:05,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:57:07,883 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int))) (or (<= c_~N~0 ~M~0) (= c_~res1~0 (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-08-31 02:57:09,965 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int)) (v_ArrVal_521 (Array Int Int))) (or (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_521) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) c_~res2~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)))) c_~res1~0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-08-31 02:57:17,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:57:17,386 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 105 treesize of output 70 [2023-08-31 02:57:17,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:57:17,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38390 treesize of output 32314 [2023-08-31 02:57:17,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:57:17,806 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 2006 treesize of output 1822 [2023-08-31 02:57:17,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:57:17,849 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 1814 treesize of output 1438 [2023-08-31 02:57:17,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:57:17,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 1262 [2023-08-31 02:57:54,369 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:57:54,615 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:57:55,726 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:57:55,829 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:57:55,878 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:57:56,181 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:57:56,259 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:57:56,323 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:57:56,414 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:57:56,451 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:57:56,485 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:57:56,549 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:57:56,600 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:57:56,637 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:57:56,719 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:57:56,832 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:57:57,667 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:57:57,690 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:57:58,162 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:57:58,323 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:57:58,420 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:57:58,518 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:57:58,626 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:57:58,711 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:57:58,791 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:57:58,992 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:57:59,284 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:57:59,412 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:57:59,572 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:57:59,859 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:00,672 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:00,801 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:01,097 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:01,242 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:01,398 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:01,690 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:01,831 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:01,883 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:02,032 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:02,102 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:02,242 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:02,356 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:02,648 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:02,947 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:03,120 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:03,234 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:03,557 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:03,670 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:03,748 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:04,015 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:04,300 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:04,432 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:04,741 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:04,999 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:05,158 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:05,307 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:05,612 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:05,861 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:06,562 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:07,234 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:07,627 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:08,002 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:09,542 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:10,219 WARN L718 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-08-31 02:58:13,763 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:15,251 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:15,909 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:17,589 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:17,884 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:18,556 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:18,816 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:18,939 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:19,204 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:19,463 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:20,116 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:20,247 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:20,295 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:20,413 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:20,471 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:20,609 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:20,738 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:20,847 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:21,263 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:21,906 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:22,168 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:22,460 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:23,952 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:24,610 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:24,868 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:25,503 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:25,793 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:25,843 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:25,963 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:26,330 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:26,418 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:26,521 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:26,768 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:26,870 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:27,032 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:27,116 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:27,133 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:27,269 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:27,513 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:27,538 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:27,601 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:27,658 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:27,781 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:27,921 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:28,030 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:28,202 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:28,346 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:28,717 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:28,842 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:28,958 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:28,992 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:29,026 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:29,054 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:29,135 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:29,175 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:29,213 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:29,227 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:29,402 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:29,432 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:29,484 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:29,543 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:29,706 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:29,762 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:29,801 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:29,852 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:29,909 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:29,947 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:30,030 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:30,064 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:30,132 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:30,195 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:30,237 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:30,305 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:30,340 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:30,371 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:30,744 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:31,845 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:31,916 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:32,822 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:33,931 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:33,997 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:34,014 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:34,043 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:34,071 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:34,089 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:34,102 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:34,134 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:34,185 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:34,207 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:34,824 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:42,611 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:42,735 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:43,666 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:43,731 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:44,326 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:44,411 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:44,650 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:44,838 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:44,898 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:44,941 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:44,955 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:45,080 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:45,378 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:45,500 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:45,518 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:45,563 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:45,606 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:45,732 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:46,018 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:46,314 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:46,435 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:46,552 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:46,703 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:46,824 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:46,937 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:47,118 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:47,140 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:47,224 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:58:47,244 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:47,339 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:47,536 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:47,557 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:47,622 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:47,676 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:47,889 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:47,938 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:47,957 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:48,026 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:48,119 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:48,146 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:48,312 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:48,368 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:48,529 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:48,822 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:49,106 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:49,163 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:49,318 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:49,383 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:49,438 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:49,902 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:50,064 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:50,211 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:50,976 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:52,519 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:54,074 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:55,705 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-31 02:58:56,379 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-31 02:58:56,461 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:56,764 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:57,064 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:57,439 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:57,487 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:57,753 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:58:58,112 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:58,218 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:58,440 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:58,799 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:59,185 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:59,265 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:59,324 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:58:59,356 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:59,827 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:58:59,854 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:58:59,943 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:58:59,957 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:00,253 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:59:00,353 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:00,397 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:00,482 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:00,844 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:00,931 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:00,995 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:01,444 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:01,457 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:02,072 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:02,109 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:04,391 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:04,410 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:04,488 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:04,741 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:04,751 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:04,762 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:05,055 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:05,457 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:05,474 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:05,491 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:05,829 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:05,871 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:05,913 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:59:06,093 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-31 02:59:06,114 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:59:06,227 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:59:06,340 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-31 02:59:06,470 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:59:06,574 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:06,628 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:59:06,697 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:59:06,969 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:07,014 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:07,057 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:07,083 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:07,113 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:07,168 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:07,202 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:09,255 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:09,272 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:09,297 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-31 02:59:09,386 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:09,449 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:09,477 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:09,771 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:11,657 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:11,671 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:11,693 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:11,781 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:11,814 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:11,841 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-31 02:59:11,876 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 02:59:11,889 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:11,917 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:13,615 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:14,190 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:59:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-31 02:59:30,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752300285] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:59:30,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:59:30,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 33 [2023-08-31 02:59:30,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671255195] [2023-08-31 02:59:30,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:59:30,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-31 02:59:30,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:59:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-31 02:59:30,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=922, Unknown=22, NotChecked=126, Total=1190 [2023-08-31 02:59:30,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-08-31 02:59:30,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1115 transitions, 16568 flow. Second operand has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:30,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:59:30,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-08-31 02:59:30,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:59:39,999 INFO L130 PetriNetUnfolder]: 8812/13691 cut-off events. [2023-08-31 02:59:39,999 INFO L131 PetriNetUnfolder]: For 151268/151268 co-relation queries the response was YES. [2023-08-31 02:59:40,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94097 conditions, 13691 events. 8812/13691 cut-off events. For 151268/151268 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 89378 event pairs, 671 based on Foata normal form. 8/13697 useless extension candidates. Maximal degree in co-relation 93746. Up to 7849 conditions per place. [2023-08-31 02:59:40,110 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 719 selfloop transitions, 774 changer transitions 11/1504 dead transitions. [2023-08-31 02:59:40,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1504 transitions, 24011 flow [2023-08-31 02:59:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-31 02:59:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-31 02:59:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2355 transitions. [2023-08-31 02:59:40,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25659185007626933 [2023-08-31 02:59:40,120 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2355 transitions. [2023-08-31 02:59:40,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2355 transitions. [2023-08-31 02:59:40,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:59:40,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2355 transitions. [2023-08-31 02:59:40,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 90.57692307692308) internal successors, (2355), 26 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:40,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:40,131 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:40,131 INFO L175 Difference]: Start difference. First operand has 288 places, 1115 transitions, 16568 flow. Second operand 26 states and 2355 transitions. [2023-08-31 02:59:40,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1504 transitions, 24011 flow [2023-08-31 02:59:41,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1504 transitions, 23736 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-08-31 02:59:41,360 INFO L231 Difference]: Finished difference. Result has 309 places, 1263 transitions, 20815 flow [2023-08-31 02:59:41,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16298, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=20815, PETRI_PLACES=309, PETRI_TRANSITIONS=1263} [2023-08-31 02:59:41,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2023-08-31 02:59:41,362 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1263 transitions, 20815 flow [2023-08-31 02:59:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:41,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:59:41,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:59:41,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 02:59:41,569 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 [2023-08-31 02:59:41,569 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)] === [2023-08-31 02:59:41,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:59:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2060531317, now seen corresponding path program 9 times [2023-08-31 02:59:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:59:41,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006346762] [2023-08-31 02:59:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:59:41,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:59:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:59:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:59:42,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:59:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006346762] [2023-08-31 02:59:42,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006346762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:59:42,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891468324] [2023-08-31 02:59:42,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 02:59:42,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:59:42,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:59:42,705 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) [2023-08-31 02:59:42,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 02:59:42,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-31 02:59:42,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:59:42,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-31 02:59:42,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:59:43,263 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-31 02:59:43,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-08-31 02:59:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:59:43,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:59:43,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:59:43,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-08-31 02:59:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:59:43,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891468324] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:59:43,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:59:43,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-08-31 02:59:43,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323549626] [2023-08-31 02:59:43,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:59:43,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-31 02:59:43,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:59:43,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-31 02:59:43,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2023-08-31 02:59:46,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-31 02:59:46,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1263 transitions, 20815 flow. Second operand has 34 states, 34 states have (on average 113.91176470588235) internal successors, (3873), 34 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:46,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:59:46,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-31 02:59:46,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:59:52,605 INFO L130 PetriNetUnfolder]: 9416/14648 cut-off events. [2023-08-31 02:59:52,605 INFO L131 PetriNetUnfolder]: For 227922/227922 co-relation queries the response was YES. [2023-08-31 02:59:52,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113911 conditions, 14648 events. 9416/14648 cut-off events. For 227922/227922 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 96009 event pairs, 1286 based on Foata normal form. 3/14650 useless extension candidates. Maximal degree in co-relation 113442. Up to 11621 conditions per place. [2023-08-31 02:59:52,748 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 948 selfloop transitions, 580 changer transitions 10/1538 dead transitions. [2023-08-31 02:59:52,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1538 transitions, 27718 flow [2023-08-31 02:59:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-31 02:59:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-31 02:59:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4382 transitions. [2023-08-31 02:59:52,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33550264145164993 [2023-08-31 02:59:52,754 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4382 transitions. [2023-08-31 02:59:52,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4382 transitions. [2023-08-31 02:59:52,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:59:52,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4382 transitions. [2023-08-31 02:59:52,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 118.43243243243244) internal successors, (4382), 37 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:52,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:52,772 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:52,773 INFO L175 Difference]: Start difference. First operand has 309 places, 1263 transitions, 20815 flow. Second operand 37 states and 4382 transitions. [2023-08-31 02:59:52,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1538 transitions, 27718 flow [2023-08-31 02:59:54,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1538 transitions, 27016 flow, removed 166 selfloop flow, removed 12 redundant places. [2023-08-31 02:59:54,928 INFO L231 Difference]: Finished difference. Result has 345 places, 1401 transitions, 24282 flow [2023-08-31 02:59:54,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=20183, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=24282, PETRI_PLACES=345, PETRI_TRANSITIONS=1401} [2023-08-31 02:59:54,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-08-31 02:59:54,929 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 1401 transitions, 24282 flow [2023-08-31 02:59:54,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.91176470588235) internal successors, (3873), 34 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:54,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:59:54,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:59:54,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-31 02:59:55,136 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 [2023-08-31 02:59:55,137 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)] === [2023-08-31 02:59:55,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:59:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash 952548253, now seen corresponding path program 10 times [2023-08-31 02:59:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:59:55,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497666805] [2023-08-31 02:59:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:59:55,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:59:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:59:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:59:56,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:59:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497666805] [2023-08-31 02:59:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497666805] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:59:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676783466] [2023-08-31 02:59:56,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 02:59:56,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:59:56,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:59:56,080 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) [2023-08-31 02:59:56,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 02:59:56,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 02:59:56,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:59:56,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-31 02:59:56,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:59:56,486 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:59:56,486 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 27 treesize of output 19 [2023-08-31 02:59:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:59:56,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:59:56,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:59:56,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-08-31 02:59:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:59:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676783466] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:59:56,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:59:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-08-31 02:59:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797528822] [2023-08-31 02:59:56,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:59:56,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 02:59:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:59:56,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 02:59:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-08-31 02:59:58,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-31 02:59:58,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1401 transitions, 24282 flow. Second operand has 31 states, 31 states have (on average 113.87096774193549) internal successors, (3530), 31 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:59:58,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:59:58,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-31 02:59:58,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:00:03,253 INFO L130 PetriNetUnfolder]: 9502/14834 cut-off events. [2023-08-31 03:00:03,253 INFO L131 PetriNetUnfolder]: For 239366/239366 co-relation queries the response was YES. [2023-08-31 03:00:03,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118370 conditions, 14834 events. 9502/14834 cut-off events. For 239366/239366 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 97989 event pairs, 1587 based on Foata normal form. 3/14835 useless extension candidates. Maximal degree in co-relation 117913. Up to 13724 conditions per place. [2023-08-31 03:00:03,395 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 1074 selfloop transitions, 398 changer transitions 13/1485 dead transitions. [2023-08-31 03:00:03,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1485 transitions, 28475 flow [2023-08-31 03:00:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 03:00:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 03:00:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2122 transitions. [2023-08-31 03:00:03,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3339628580421782 [2023-08-31 03:00:03,398 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2122 transitions. [2023-08-31 03:00:03,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2122 transitions. [2023-08-31 03:00:03,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:00:03,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2122 transitions. [2023-08-31 03:00:03,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 117.88888888888889) internal successors, (2122), 18 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:03,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:03,405 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:03,405 INFO L175 Difference]: Start difference. First operand has 345 places, 1401 transitions, 24282 flow. Second operand 18 states and 2122 transitions. [2023-08-31 03:00:03,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1485 transitions, 28475 flow [2023-08-31 03:00:05,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1485 transitions, 27518 flow, removed 445 selfloop flow, removed 10 redundant places. [2023-08-31 03:00:05,692 INFO L231 Difference]: Finished difference. Result has 359 places, 1440 transitions, 25164 flow [2023-08-31 03:00:05,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=23457, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=25164, PETRI_PLACES=359, PETRI_TRANSITIONS=1440} [2023-08-31 03:00:05,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2023-08-31 03:00:05,693 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1440 transitions, 25164 flow [2023-08-31 03:00:05,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 113.87096774193549) internal successors, (3530), 31 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:05,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:00:05,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:00:05,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-31 03:00:05,894 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 [2023-08-31 03:00:05,895 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)] === [2023-08-31 03:00:05,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:00:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash -70647383, now seen corresponding path program 11 times [2023-08-31 03:00:05,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:00:05,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825865802] [2023-08-31 03:00:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:00:05,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:00:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:00:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:00:06,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:00:06,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825865802] [2023-08-31 03:00:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825865802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:00:06,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943997606] [2023-08-31 03:00:06,832 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:00:06,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:00:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:00:06,834 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) [2023-08-31 03:00:06,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 03:00:06,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:00:06,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:00:06,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 61 conjunts are in the unsatisfiable core [2023-08-31 03:00:06,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:00:07,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:00:07,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-08-31 03:00:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:00:07,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:00:07,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:00:07,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-08-31 03:00:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:00:07,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943997606] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:00:07,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:00:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2023-08-31 03:00:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942030229] [2023-08-31 03:00:07,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:00:07,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-31 03:00:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:00:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-31 03:00:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-08-31 03:00:09,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 353 [2023-08-31 03:00:09,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1440 transitions, 25164 flow. Second operand has 28 states, 28 states have (on average 116.10714285714286) internal successors, (3251), 28 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:09,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:00:09,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 353 [2023-08-31 03:00:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:00:16,078 INFO L130 PetriNetUnfolder]: 9706/15166 cut-off events. [2023-08-31 03:00:16,078 INFO L131 PetriNetUnfolder]: For 226667/226667 co-relation queries the response was YES. [2023-08-31 03:00:16,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118405 conditions, 15166 events. 9706/15166 cut-off events. For 226667/226667 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 100694 event pairs, 1485 based on Foata normal form. 3/15169 useless extension candidates. Maximal degree in co-relation 117948. Up to 11569 conditions per place. [2023-08-31 03:00:16,256 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 886 selfloop transitions, 684 changer transitions 9/1579 dead transitions. [2023-08-31 03:00:16,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1579 transitions, 29964 flow [2023-08-31 03:00:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-31 03:00:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-31 03:00:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3613 transitions. [2023-08-31 03:00:16,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411709159584514 [2023-08-31 03:00:16,261 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3613 transitions. [2023-08-31 03:00:16,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3613 transitions. [2023-08-31 03:00:16,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:00:16,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3613 transitions. [2023-08-31 03:00:16,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 120.43333333333334) internal successors, (3613), 30 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:16,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:16,275 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:16,275 INFO L175 Difference]: Start difference. First operand has 359 places, 1440 transitions, 25164 flow. Second operand 30 states and 3613 transitions. [2023-08-31 03:00:16,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1579 transitions, 29964 flow [2023-08-31 03:00:18,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1579 transitions, 29495 flow, removed 53 selfloop flow, removed 9 redundant places. [2023-08-31 03:00:18,538 INFO L231 Difference]: Finished difference. Result has 384 places, 1475 transitions, 27023 flow [2023-08-31 03:00:18,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=24699, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=27023, PETRI_PLACES=384, PETRI_TRANSITIONS=1475} [2023-08-31 03:00:18,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2023-08-31 03:00:18,539 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1475 transitions, 27023 flow [2023-08-31 03:00:18,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 116.10714285714286) internal successors, (3251), 28 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:18,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:00:18,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:00:18,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 03:00:18,740 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 [2023-08-31 03:00:18,740 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)] === [2023-08-31 03:00:18,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:00:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash 466247267, now seen corresponding path program 12 times [2023-08-31 03:00:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:00:18,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981202545] [2023-08-31 03:00:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:00:18,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:00:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:00:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:00:19,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:00:19,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981202545] [2023-08-31 03:00:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981202545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:00:19,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21229254] [2023-08-31 03:00:19,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:00:19,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:00:19,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:00:19,851 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) [2023-08-31 03:00:19,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 03:00:19,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 03:00:19,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:00:19,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-31 03:00:19,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:00:20,222 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-31 03:00:20,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-08-31 03:00:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:20,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:00:20,408 INFO L321 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2023-08-31 03:00:20,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 29 [2023-08-31 03:00:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:20,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21229254] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:00:20,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:00:20,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-08-31 03:00:20,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992610809] [2023-08-31 03:00:20,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:00:20,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-31 03:00:20,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:00:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-31 03:00:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-08-31 03:00:21,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 353 [2023-08-31 03:00:21,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1475 transitions, 27023 flow. Second operand has 26 states, 26 states have (on average 119.3076923076923) internal successors, (3102), 26 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:21,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:00:21,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 353 [2023-08-31 03:00:21,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:00:27,768 INFO L130 PetriNetUnfolder]: 9654/15192 cut-off events. [2023-08-31 03:00:27,769 INFO L131 PetriNetUnfolder]: For 246755/247378 co-relation queries the response was YES. [2023-08-31 03:00:27,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123027 conditions, 15192 events. 9654/15192 cut-off events. For 246755/247378 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 103750 event pairs, 1150 based on Foata normal form. 256/15343 useless extension candidates. Maximal degree in co-relation 122546. Up to 8903 conditions per place. [2023-08-31 03:00:27,992 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 836 selfloop transitions, 832 changer transitions 11/1727 dead transitions. [2023-08-31 03:00:27,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1727 transitions, 34217 flow [2023-08-31 03:00:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-31 03:00:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-31 03:00:27,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2845 transitions. [2023-08-31 03:00:27,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3504126123906885 [2023-08-31 03:00:27,996 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2845 transitions. [2023-08-31 03:00:27,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2845 transitions. [2023-08-31 03:00:27,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:00:27,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2845 transitions. [2023-08-31 03:00:28,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 123.69565217391305) internal successors, (2845), 23 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:28,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:28,006 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:28,006 INFO L175 Difference]: Start difference. First operand has 384 places, 1475 transitions, 27023 flow. Second operand 23 states and 2845 transitions. [2023-08-31 03:00:28,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1727 transitions, 34217 flow [2023-08-31 03:00:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1727 transitions, 33332 flow, removed 130 selfloop flow, removed 18 redundant places. [2023-08-31 03:00:30,632 INFO L231 Difference]: Finished difference. Result has 394 places, 1617 transitions, 31101 flow [2023-08-31 03:00:30,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26236, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=697, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=31101, PETRI_PLACES=394, PETRI_TRANSITIONS=1617} [2023-08-31 03:00:30,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2023-08-31 03:00:30,634 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1617 transitions, 31101 flow [2023-08-31 03:00:30,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 119.3076923076923) internal successors, (3102), 26 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:30,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:00:30,635 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, 1, 1] [2023-08-31 03:00:30,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-31 03:00:30,841 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 [2023-08-31 03:00:30,841 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)] === [2023-08-31 03:00:30,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:00:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash -7374613, now seen corresponding path program 13 times [2023-08-31 03:00:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:00:30,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751863487] [2023-08-31 03:00:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:00:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:00:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:00:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:30,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:00:30,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751863487] [2023-08-31 03:00:30,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751863487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:00:30,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331395407] [2023-08-31 03:00:30,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 03:00:30,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:00:30,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:00:30,941 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) [2023-08-31 03:00:30,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-31 03:00:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:00:31,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:00:31,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:00:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:31,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:00:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331395407] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:00:31,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:00:31,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-31 03:00:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563658359] [2023-08-31 03:00:31,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:00:31,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 03:00:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:00:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 03:00:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-31 03:00:31,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 353 [2023-08-31 03:00:31,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1617 transitions, 31101 flow. Second operand has 14 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:31,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:00:31,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 353 [2023-08-31 03:00:31,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:00:38,472 INFO L130 PetriNetUnfolder]: 11190/18524 cut-off events. [2023-08-31 03:00:38,472 INFO L131 PetriNetUnfolder]: For 386085/389081 co-relation queries the response was YES. [2023-08-31 03:00:38,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156674 conditions, 18524 events. 11190/18524 cut-off events. For 386085/389081 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 142503 event pairs, 2052 based on Foata normal form. 2194/20154 useless extension candidates. Maximal degree in co-relation 156536. Up to 6496 conditions per place. [2023-08-31 03:00:38,742 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1674 selfloop transitions, 202 changer transitions 21/1996 dead transitions. [2023-08-31 03:00:38,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1996 transitions, 42013 flow [2023-08-31 03:00:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 03:00:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 03:00:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1812 transitions. [2023-08-31 03:00:38,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42776203966005666 [2023-08-31 03:00:38,745 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1812 transitions. [2023-08-31 03:00:38,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1812 transitions. [2023-08-31 03:00:38,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:00:38,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1812 transitions. [2023-08-31 03:00:38,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:38,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:38,750 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:38,751 INFO L175 Difference]: Start difference. First operand has 394 places, 1617 transitions, 31101 flow. Second operand 12 states and 1812 transitions. [2023-08-31 03:00:38,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1996 transitions, 42013 flow [2023-08-31 03:00:42,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1996 transitions, 40945 flow, removed 233 selfloop flow, removed 18 redundant places. [2023-08-31 03:00:42,616 INFO L231 Difference]: Finished difference. Result has 385 places, 1344 transitions, 26255 flow [2023-08-31 03:00:42,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25198, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26255, PETRI_PLACES=385, PETRI_TRANSITIONS=1344} [2023-08-31 03:00:42,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2023-08-31 03:00:42,618 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1344 transitions, 26255 flow [2023-08-31 03:00:42,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:42,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:00:42,618 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, 1, 1] [2023-08-31 03:00:42,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-31 03:00:42,819 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 [2023-08-31 03:00:42,819 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)] === [2023-08-31 03:00:42,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:00:42,819 INFO L85 PathProgramCache]: Analyzing trace with hash -556909332, now seen corresponding path program 14 times [2023-08-31 03:00:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:00:42,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098484711] [2023-08-31 03:00:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:00:42,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:00:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:00:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:00:42,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:00:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098484711] [2023-08-31 03:00:42,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098484711] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:00:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737924782] [2023-08-31 03:00:42,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:00:42,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:00:42,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:00:42,961 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) [2023-08-31 03:00:42,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-31 03:00:43,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:00:43,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:00:43,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-31 03:00:43,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:00:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:00:43,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:00:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:00:43,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737924782] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:00:43,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:00:43,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-31 03:00:43,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159048536] [2023-08-31 03:00:43,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:00:43,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-31 03:00:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:00:43,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-31 03:00:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-31 03:00:43,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 353 [2023-08-31 03:00:43,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1344 transitions, 26255 flow. Second operand has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:43,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:00:43,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 353 [2023-08-31 03:00:43,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:00:49,886 INFO L130 PetriNetUnfolder]: 11048/18623 cut-off events. [2023-08-31 03:00:49,887 INFO L131 PetriNetUnfolder]: For 339007/340643 co-relation queries the response was YES. [2023-08-31 03:00:50,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149658 conditions, 18623 events. 11048/18623 cut-off events. For 339007/340643 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 147997 event pairs, 1831 based on Foata normal form. 1287/19715 useless extension candidates. Maximal degree in co-relation 149529. Up to 5357 conditions per place. [2023-08-31 03:00:50,069 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1351 selfloop transitions, 278 changer transitions 255/1970 dead transitions. [2023-08-31 03:00:50,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1970 transitions, 40594 flow [2023-08-31 03:00:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 03:00:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 03:00:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2066 transitions. [2023-08-31 03:00:50,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41804937272359366 [2023-08-31 03:00:50,071 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2066 transitions. [2023-08-31 03:00:50,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2066 transitions. [2023-08-31 03:00:50,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:00:50,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2066 transitions. [2023-08-31 03:00:50,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 147.57142857142858) internal successors, (2066), 14 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:50,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:50,076 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:50,076 INFO L175 Difference]: Start difference. First operand has 385 places, 1344 transitions, 26255 flow. Second operand 14 states and 2066 transitions. [2023-08-31 03:00:50,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1970 transitions, 40594 flow [2023-08-31 03:00:53,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1970 transitions, 40474 flow, removed 51 selfloop flow, removed 6 redundant places. [2023-08-31 03:00:53,597 INFO L231 Difference]: Finished difference. Result has 395 places, 1254 transitions, 24755 flow [2023-08-31 03:00:53,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25321, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24755, PETRI_PLACES=395, PETRI_TRANSITIONS=1254} [2023-08-31 03:00:53,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-08-31 03:00:53,599 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1254 transitions, 24755 flow [2023-08-31 03:00:53,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:53,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:00:53,599 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, 1, 1] [2023-08-31 03:00:53,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-31 03:00:53,805 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 [2023-08-31 03:00:53,805 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)] === [2023-08-31 03:00:53,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:00:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1941623595, now seen corresponding path program 15 times [2023-08-31 03:00:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:00:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813720833] [2023-08-31 03:00:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:00:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:00:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:00:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:53,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:00:53,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813720833] [2023-08-31 03:00:53,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813720833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:00:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180459321] [2023-08-31 03:00:53,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:00:53,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:00:53,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:00:53,908 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) [2023-08-31 03:00:53,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-31 03:00:54,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:00:54,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:00:54,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:00:54,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:00:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:54,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:00:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:00:54,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180459321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:00:54,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:00:54,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-31 03:00:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085501921] [2023-08-31 03:00:54,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:00:54,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 03:00:54,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:00:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 03:00:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-31 03:00:54,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 353 [2023-08-31 03:00:54,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1254 transitions, 24755 flow. Second operand has 14 states, 14 states have (on average 147.42857142857142) internal successors, (2064), 14 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:54,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:00:54,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 353 [2023-08-31 03:00:54,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:00:58,642 INFO L130 PetriNetUnfolder]: 7557/12853 cut-off events. [2023-08-31 03:00:58,642 INFO L131 PetriNetUnfolder]: For 265305/267628 co-relation queries the response was YES. [2023-08-31 03:00:58,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106012 conditions, 12853 events. 7557/12853 cut-off events. For 265305/267628 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 98923 event pairs, 2673 based on Foata normal form. 865/13011 useless extension candidates. Maximal degree in co-relation 105881. Up to 8468 conditions per place. [2023-08-31 03:00:58,780 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 1176 selfloop transitions, 11 changer transitions 11/1327 dead transitions. [2023-08-31 03:00:58,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1327 transitions, 27017 flow [2023-08-31 03:00:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 03:00:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 03:00:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1065 transitions. [2023-08-31 03:00:58,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309995953055443 [2023-08-31 03:00:58,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1065 transitions. [2023-08-31 03:00:58,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1065 transitions. [2023-08-31 03:00:58,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:00:58,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1065 transitions. [2023-08-31 03:00:58,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:58,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:58,784 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:00:58,784 INFO L175 Difference]: Start difference. First operand has 395 places, 1254 transitions, 24755 flow. Second operand 7 states and 1065 transitions. [2023-08-31 03:00:58,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1327 transitions, 27017 flow [2023-08-31 03:01:00,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1327 transitions, 26184 flow, removed 200 selfloop flow, removed 21 redundant places. [2023-08-31 03:01:00,433 INFO L231 Difference]: Finished difference. Result has 371 places, 1073 transitions, 19541 flow [2023-08-31 03:01:00,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19654, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19541, PETRI_PLACES=371, PETRI_TRANSITIONS=1073} [2023-08-31 03:01:00,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2023-08-31 03:01:00,434 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 1073 transitions, 19541 flow [2023-08-31 03:01:00,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 147.42857142857142) internal successors, (2064), 14 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:00,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:00,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:00,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-31 03:01:00,635 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 [2023-08-31 03:01:00,635 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)] === [2023-08-31 03:01:00,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1231118575, now seen corresponding path program 1 times [2023-08-31 03:01:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:00,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751784303] [2023-08-31 03:01:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:00,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:00,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751784303] [2023-08-31 03:01:00,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751784303] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:00,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738364035] [2023-08-31 03:01:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:00,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:00,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:00,753 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) [2023-08-31 03:01:00,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-31 03:01:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:00,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 03:01:00,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:00,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738364035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:01,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:01,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-31 03:01:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782446042] [2023-08-31 03:01:01,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 03:01:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 03:01:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-08-31 03:01:01,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:01:01,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 1073 transitions, 19541 flow. Second operand has 17 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:01,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:01,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:01:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:07,638 INFO L130 PetriNetUnfolder]: 11072/18974 cut-off events. [2023-08-31 03:01:07,639 INFO L131 PetriNetUnfolder]: For 316575/316681 co-relation queries the response was YES. [2023-08-31 03:01:07,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145429 conditions, 18974 events. 11072/18974 cut-off events. For 316575/316681 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 153344 event pairs, 846 based on Foata normal form. 180/19132 useless extension candidates. Maximal degree in co-relation 145303. Up to 5337 conditions per place. [2023-08-31 03:01:07,840 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1550 selfloop transitions, 455 changer transitions 146/2185 dead transitions. [2023-08-31 03:01:07,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2185 transitions, 41509 flow [2023-08-31 03:01:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-31 03:01:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-31 03:01:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4180 transitions. [2023-08-31 03:01:07,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083227508059002 [2023-08-31 03:01:07,844 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4180 transitions. [2023-08-31 03:01:07,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4180 transitions. [2023-08-31 03:01:07,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:07,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4180 transitions. [2023-08-31 03:01:07,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 144.13793103448276) internal successors, (4180), 29 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:07,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:07,855 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:07,855 INFO L175 Difference]: Start difference. First operand has 371 places, 1073 transitions, 19541 flow. Second operand 29 states and 4180 transitions. [2023-08-31 03:01:07,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2185 transitions, 41509 flow [2023-08-31 03:01:10,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 2185 transitions, 41137 flow, removed 32 selfloop flow, removed 16 redundant places. [2023-08-31 03:01:10,446 INFO L231 Difference]: Finished difference. Result has 396 places, 1387 transitions, 26430 flow [2023-08-31 03:01:10,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19173, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=26430, PETRI_PLACES=396, PETRI_TRANSITIONS=1387} [2023-08-31 03:01:10,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2023-08-31 03:01:10,447 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1387 transitions, 26430 flow [2023-08-31 03:01:10,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:10,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:10,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:10,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-31 03:01:10,648 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 [2023-08-31 03:01:10,648 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)] === [2023-08-31 03:01:10,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -16239823, now seen corresponding path program 2 times [2023-08-31 03:01:10,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:10,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282095332] [2023-08-31 03:01:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:10,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:01:10,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:10,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282095332] [2023-08-31 03:01:10,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282095332] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:10,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371460946] [2023-08-31 03:01:10,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:01:10,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:10,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:10,757 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) [2023-08-31 03:01:10,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-31 03:01:10,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:01:10,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:01:10,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 03:01:10,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:01:10,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:01:11,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371460946] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:11,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:11,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-31 03:01:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825172090] [2023-08-31 03:01:11,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:11,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 03:01:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 03:01:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-31 03:01:11,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:01:11,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1387 transitions, 26430 flow. Second operand has 16 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:11,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:11,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:01:11,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:18,105 INFO L130 PetriNetUnfolder]: 10331/18073 cut-off events. [2023-08-31 03:01:18,105 INFO L131 PetriNetUnfolder]: For 379266/379368 co-relation queries the response was YES. [2023-08-31 03:01:18,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151051 conditions, 18073 events. 10331/18073 cut-off events. For 379266/379368 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 148255 event pairs, 1833 based on Foata normal form. 416/18450 useless extension candidates. Maximal degree in co-relation 150916. Up to 5761 conditions per place. [2023-08-31 03:01:18,279 INFO L137 encePairwiseOnDemand]: 344/353 looper letters, 1111 selfloop transitions, 503 changer transitions 184/1832 dead transitions. [2023-08-31 03:01:18,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1832 transitions, 36910 flow [2023-08-31 03:01:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 03:01:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 03:01:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2901 transitions. [2023-08-31 03:01:18,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41090651558073654 [2023-08-31 03:01:18,282 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2901 transitions. [2023-08-31 03:01:18,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2901 transitions. [2023-08-31 03:01:18,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:18,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2901 transitions. [2023-08-31 03:01:18,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 145.05) internal successors, (2901), 20 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:18,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:18,287 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:18,287 INFO L175 Difference]: Start difference. First operand has 396 places, 1387 transitions, 26430 flow. Second operand 20 states and 2901 transitions. [2023-08-31 03:01:18,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1832 transitions, 36910 flow [2023-08-31 03:01:21,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1832 transitions, 36291 flow, removed 214 selfloop flow, removed 7 redundant places. [2023-08-31 03:01:21,983 INFO L231 Difference]: Finished difference. Result has 412 places, 1393 transitions, 27440 flow [2023-08-31 03:01:21,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25405, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=27440, PETRI_PLACES=412, PETRI_TRANSITIONS=1393} [2023-08-31 03:01:21,985 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2023-08-31 03:01:21,985 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1393 transitions, 27440 flow [2023-08-31 03:01:21,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:21,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:21,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:21,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-31 03:01:22,186 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 [2023-08-31 03:01:22,186 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)] === [2023-08-31 03:01:22,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash -57058493, now seen corresponding path program 3 times [2023-08-31 03:01:22,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:22,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958771600] [2023-08-31 03:01:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:22,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:22,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958771600] [2023-08-31 03:01:22,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958771600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:22,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27416284] [2023-08-31 03:01:22,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:01:22,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:22,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:22,292 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) [2023-08-31 03:01:22,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-31 03:01:22,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-31 03:01:22,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:01:22,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 03:01:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:22,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27416284] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:22,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-31 03:01:22,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018187495] [2023-08-31 03:01:22,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:22,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-31 03:01:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-31 03:01:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-08-31 03:01:22,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:01:22,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1393 transitions, 27440 flow. Second operand has 18 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:22,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:22,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:01:22,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:29,368 INFO L130 PetriNetUnfolder]: 9498/16524 cut-off events. [2023-08-31 03:01:29,369 INFO L131 PetriNetUnfolder]: For 351504/351656 co-relation queries the response was YES. [2023-08-31 03:01:29,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140288 conditions, 16524 events. 9498/16524 cut-off events. For 351504/351656 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 133518 event pairs, 627 based on Foata normal form. 381/16888 useless extension candidates. Maximal degree in co-relation 140150. Up to 4395 conditions per place. [2023-08-31 03:01:29,538 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1407 selfloop transitions, 316 changer transitions 358/2115 dead transitions. [2023-08-31 03:01:29,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 2115 transitions, 43551 flow [2023-08-31 03:01:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-31 03:01:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-31 03:01:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4578 transitions. [2023-08-31 03:01:29,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40527620396600567 [2023-08-31 03:01:29,544 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4578 transitions. [2023-08-31 03:01:29,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4578 transitions. [2023-08-31 03:01:29,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:29,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4578 transitions. [2023-08-31 03:01:29,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 143.0625) internal successors, (4578), 32 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:29,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:29,560 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:29,560 INFO L175 Difference]: Start difference. First operand has 412 places, 1393 transitions, 27440 flow. Second operand 32 states and 4578 transitions. [2023-08-31 03:01:29,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 2115 transitions, 43551 flow [2023-08-31 03:01:32,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 2115 transitions, 42969 flow, removed 215 selfloop flow, removed 9 redundant places. [2023-08-31 03:01:32,350 INFO L231 Difference]: Finished difference. Result has 430 places, 1334 transitions, 26350 flow [2023-08-31 03:01:32,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26581, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26350, PETRI_PLACES=430, PETRI_TRANSITIONS=1334} [2023-08-31 03:01:32,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2023-08-31 03:01:32,351 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1334 transitions, 26350 flow [2023-08-31 03:01:32,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:32,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:32,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:32,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-31 03:01:32,558 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 [2023-08-31 03:01:32,559 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)] === [2023-08-31 03:01:32,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash -720137693, now seen corresponding path program 4 times [2023-08-31 03:01:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:32,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456993634] [2023-08-31 03:01:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:01:32,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456993634] [2023-08-31 03:01:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456993634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648690577] [2023-08-31 03:01:32,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:01:32,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:32,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:32,669 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) [2023-08-31 03:01:32,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-31 03:01:32,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:01:32,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:01:32,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 03:01:32,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:01:32,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:01:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648690577] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:32,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:32,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-31 03:01:32,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154980425] [2023-08-31 03:01:32,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:32,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-31 03:01:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-31 03:01:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-08-31 03:01:33,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:01:33,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1334 transitions, 26350 flow. Second operand has 18 states, 18 states have (on average 137.61111111111111) internal successors, (2477), 18 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:33,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:33,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:01:33,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:38,704 INFO L130 PetriNetUnfolder]: 7655/13389 cut-off events. [2023-08-31 03:01:38,704 INFO L131 PetriNetUnfolder]: For 267220/267376 co-relation queries the response was YES. [2023-08-31 03:01:38,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114259 conditions, 13389 events. 7655/13389 cut-off events. For 267220/267376 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 105318 event pairs, 754 based on Foata normal form. 425/13797 useless extension candidates. Maximal degree in co-relation 114122. Up to 4139 conditions per place. [2023-08-31 03:01:38,971 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 1191 selfloop transitions, 419 changer transitions 198/1842 dead transitions. [2023-08-31 03:01:38,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1842 transitions, 37530 flow [2023-08-31 03:01:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-31 03:01:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-31 03:01:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4450 transitions. [2023-08-31 03:01:38,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066526546650827 [2023-08-31 03:01:38,975 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4450 transitions. [2023-08-31 03:01:38,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4450 transitions. [2023-08-31 03:01:38,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:38,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4450 transitions. [2023-08-31 03:01:38,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 143.5483870967742) internal successors, (4450), 31 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:38,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:38,986 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:38,986 INFO L175 Difference]: Start difference. First operand has 430 places, 1334 transitions, 26350 flow. Second operand 31 states and 4450 transitions. [2023-08-31 03:01:38,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1842 transitions, 37530 flow [2023-08-31 03:01:40,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1842 transitions, 35732 flow, removed 341 selfloop flow, removed 31 redundant places. [2023-08-31 03:01:40,995 INFO L231 Difference]: Finished difference. Result has 433 places, 1227 transitions, 23945 flow [2023-08-31 03:01:40,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=22655, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=23945, PETRI_PLACES=433, PETRI_TRANSITIONS=1227} [2023-08-31 03:01:40,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2023-08-31 03:01:40,997 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1227 transitions, 23945 flow [2023-08-31 03:01:40,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.61111111111111) internal successors, (2477), 18 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:40,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:40,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:41,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-31 03:01:41,208 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 [2023-08-31 03:01:41,209 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)] === [2023-08-31 03:01:41,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:41,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1459680607, now seen corresponding path program 5 times [2023-08-31 03:01:41,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:41,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099482989] [2023-08-31 03:01:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:41,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099482989] [2023-08-31 03:01:41,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099482989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572601524] [2023-08-31 03:01:41,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:01:41,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:41,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:41,376 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) [2023-08-31 03:01:41,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-31 03:01:41,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:01:41,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:01:41,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 03:01:41,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:41,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:01:41,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572601524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:41,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:41,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-31 03:01:41,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809336099] [2023-08-31 03:01:41,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:41,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 03:01:41,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:41,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 03:01:41,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-31 03:01:41,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:01:41,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1227 transitions, 23945 flow. Second operand has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:41,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:41,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:01:41,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:45,228 INFO L130 PetriNetUnfolder]: 5253/9441 cut-off events. [2023-08-31 03:01:45,228 INFO L131 PetriNetUnfolder]: For 189872/190014 co-relation queries the response was YES. [2023-08-31 03:01:45,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75915 conditions, 9441 events. 5253/9441 cut-off events. For 189872/190014 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 71833 event pairs, 449 based on Foata normal form. 737/10157 useless extension candidates. Maximal degree in co-relation 75777. Up to 3529 conditions per place. [2023-08-31 03:01:45,326 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 728 selfloop transitions, 50 changer transitions 388/1184 dead transitions. [2023-08-31 03:01:45,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1184 transitions, 22834 flow [2023-08-31 03:01:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 03:01:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 03:01:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2560 transitions. [2023-08-31 03:01:45,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40289581366068616 [2023-08-31 03:01:45,328 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2560 transitions. [2023-08-31 03:01:45,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2560 transitions. [2023-08-31 03:01:45,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:45,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2560 transitions. [2023-08-31 03:01:45,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 142.22222222222223) internal successors, (2560), 18 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:45,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:45,333 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:45,334 INFO L175 Difference]: Start difference. First operand has 433 places, 1227 transitions, 23945 flow. Second operand 18 states and 2560 transitions. [2023-08-31 03:01:45,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1184 transitions, 22834 flow [2023-08-31 03:01:46,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1184 transitions, 22349 flow, removed 50 selfloop flow, removed 24 redundant places. [2023-08-31 03:01:46,602 INFO L231 Difference]: Finished difference. Result has 395 places, 674 transitions, 11876 flow [2023-08-31 03:01:46,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16613, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11876, PETRI_PLACES=395, PETRI_TRANSITIONS=674} [2023-08-31 03:01:46,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-08-31 03:01:46,604 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 674 transitions, 11876 flow [2023-08-31 03:01:46,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:46,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:46,605 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:46,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-31 03:01:46,815 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 [2023-08-31 03:01:46,815 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)] === [2023-08-31 03:01:46,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash 989218226, now seen corresponding path program 16 times [2023-08-31 03:01:46,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:46,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575758493] [2023-08-31 03:01:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:01:46,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575758493] [2023-08-31 03:01:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575758493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350394053] [2023-08-31 03:01:46,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:01:46,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:46,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:46,981 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) [2023-08-31 03:01:46,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-31 03:01:47,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:01:47,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:01:47,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:01:47,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:01:47,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:01:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350394053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:47,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:47,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-08-31 03:01:47,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923792562] [2023-08-31 03:01:47,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:47,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 03:01:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:47,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 03:01:47,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-08-31 03:01:47,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 353 [2023-08-31 03:01:47,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 674 transitions, 11876 flow. Second operand has 19 states, 19 states have (on average 133.94736842105263) internal successors, (2545), 19 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:47,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:47,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 353 [2023-08-31 03:01:47,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:50,190 INFO L130 PetriNetUnfolder]: 3313/5243 cut-off events. [2023-08-31 03:01:50,190 INFO L131 PetriNetUnfolder]: For 118541/118541 co-relation queries the response was YES. [2023-08-31 03:01:50,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46932 conditions, 5243 events. 3313/5243 cut-off events. For 118541/118541 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29570 event pairs, 320 based on Foata normal form. 385/5625 useless extension candidates. Maximal degree in co-relation 46805. Up to 2053 conditions per place. [2023-08-31 03:01:50,276 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 431 selfloop transitions, 539 changer transitions 0/970 dead transitions. [2023-08-31 03:01:50,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 970 transitions, 18377 flow [2023-08-31 03:01:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-31 03:01:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-31 03:01:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5230 transitions. [2023-08-31 03:01:50,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38989115849112865 [2023-08-31 03:01:50,282 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 5230 transitions. [2023-08-31 03:01:50,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 5230 transitions. [2023-08-31 03:01:50,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:50,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 5230 transitions. [2023-08-31 03:01:50,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 137.6315789473684) internal successors, (5230), 38 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:50,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:50,293 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:50,293 INFO L175 Difference]: Start difference. First operand has 395 places, 674 transitions, 11876 flow. Second operand 38 states and 5230 transitions. [2023-08-31 03:01:50,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 970 transitions, 18377 flow [2023-08-31 03:01:50,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 970 transitions, 16390 flow, removed 619 selfloop flow, removed 28 redundant places. [2023-08-31 03:01:50,901 INFO L231 Difference]: Finished difference. Result has 318 places, 779 transitions, 14356 flow [2023-08-31 03:01:50,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7733, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14356, PETRI_PLACES=318, PETRI_TRANSITIONS=779} [2023-08-31 03:01:50,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2023-08-31 03:01:50,902 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 779 transitions, 14356 flow [2023-08-31 03:01:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 133.94736842105263) internal successors, (2545), 19 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:50,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:50,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:50,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-31 03:01:51,103 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 [2023-08-31 03:01:51,104 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)] === [2023-08-31 03:01:51,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2072912546, now seen corresponding path program 17 times [2023-08-31 03:01:51,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314617626] [2023-08-31 03:01:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:01:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314617626] [2023-08-31 03:01:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314617626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584618500] [2023-08-31 03:01:51,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:01:51,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:51,231 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) [2023-08-31 03:01:51,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-31 03:01:51,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:01:51,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:01:51,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:01:51,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:01:51,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:01:51,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584618500] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:51,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-31 03:01:51,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088094432] [2023-08-31 03:01:51,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:51,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-31 03:01:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:51,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-31 03:01:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-08-31 03:01:52,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:01:52,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 779 transitions, 14356 flow. Second operand has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:52,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:52,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:01:52,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:54,129 INFO L130 PetriNetUnfolder]: 4158/6657 cut-off events. [2023-08-31 03:01:54,130 INFO L131 PetriNetUnfolder]: For 182123/182208 co-relation queries the response was YES. [2023-08-31 03:01:54,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63313 conditions, 6657 events. 4158/6657 cut-off events. For 182123/182208 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 40055 event pairs, 503 based on Foata normal form. 53/6705 useless extension candidates. Maximal degree in co-relation 63181. Up to 2861 conditions per place. [2023-08-31 03:01:54,228 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 684 selfloop transitions, 355 changer transitions 0/1077 dead transitions. [2023-08-31 03:01:54,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1077 transitions, 21954 flow [2023-08-31 03:01:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 03:01:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 03:01:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2143 transitions. [2023-08-31 03:01:54,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40472143531633614 [2023-08-31 03:01:54,231 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2143 transitions. [2023-08-31 03:01:54,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2143 transitions. [2023-08-31 03:01:54,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:54,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2143 transitions. [2023-08-31 03:01:54,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 142.86666666666667) internal successors, (2143), 15 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:54,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:54,237 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:54,237 INFO L175 Difference]: Start difference. First operand has 318 places, 779 transitions, 14356 flow. Second operand 15 states and 2143 transitions. [2023-08-31 03:01:54,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1077 transitions, 21954 flow [2023-08-31 03:01:55,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1077 transitions, 20028 flow, removed 656 selfloop flow, removed 11 redundant places. [2023-08-31 03:01:55,280 INFO L231 Difference]: Finished difference. Result has 328 places, 913 transitions, 16650 flow [2023-08-31 03:01:55,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=12772, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16650, PETRI_PLACES=328, PETRI_TRANSITIONS=913} [2023-08-31 03:01:55,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2023-08-31 03:01:55,281 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 913 transitions, 16650 flow [2023-08-31 03:01:55,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:55,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:01:55,282 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:01:55,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-31 03:01:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:55,488 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:01:55,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:01:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1999441316, now seen corresponding path program 18 times [2023-08-31 03:01:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:01:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888251465] [2023-08-31 03:01:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:01:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:01:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:01:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:01:55,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:01:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888251465] [2023-08-31 03:01:55,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888251465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:01:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531974982] [2023-08-31 03:01:55,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:01:55,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:01:55,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:01:55,591 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:01:55,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-31 03:01:55,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 03:01:55,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:01:55,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:01:55,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:01:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:01:55,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:01:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:01:55,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531974982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:01:55,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:01:55,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-31 03:01:55,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760641268] [2023-08-31 03:01:55,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:01:55,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-31 03:01:55,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:01:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-31 03:01:55,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-31 03:01:56,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:01:56,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 913 transitions, 16650 flow. Second operand has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:56,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:01:56,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:01:56,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:01:59,304 INFO L130 PetriNetUnfolder]: 5220/8343 cut-off events. [2023-08-31 03:01:59,304 INFO L131 PetriNetUnfolder]: For 223952/224067 co-relation queries the response was YES. [2023-08-31 03:01:59,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81851 conditions, 8343 events. 5220/8343 cut-off events. For 223952/224067 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51860 event pairs, 514 based on Foata normal form. 75/8400 useless extension candidates. Maximal degree in co-relation 81717. Up to 2937 conditions per place. [2023-08-31 03:01:59,392 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 653 selfloop transitions, 503 changer transitions 0/1194 dead transitions. [2023-08-31 03:01:59,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1194 transitions, 24337 flow [2023-08-31 03:01:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 03:01:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 03:01:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2724 transitions. [2023-08-31 03:01:59,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406142835843149 [2023-08-31 03:01:59,395 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2724 transitions. [2023-08-31 03:01:59,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2724 transitions. [2023-08-31 03:01:59,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:01:59,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2724 transitions. [2023-08-31 03:01:59,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 143.3684210526316) internal successors, (2724), 19 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:59,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:59,402 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:01:59,402 INFO L175 Difference]: Start difference. First operand has 328 places, 913 transitions, 16650 flow. Second operand 19 states and 2724 transitions. [2023-08-31 03:01:59,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1194 transitions, 24337 flow [2023-08-31 03:02:00,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1194 transitions, 23973 flow, removed 164 selfloop flow, removed 6 redundant places. [2023-08-31 03:02:00,762 INFO L231 Difference]: Finished difference. Result has 346 places, 992 transitions, 19914 flow [2023-08-31 03:02:00,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16280, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=19914, PETRI_PLACES=346, PETRI_TRANSITIONS=992} [2023-08-31 03:02:00,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2023-08-31 03:02:00,764 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 992 transitions, 19914 flow [2023-08-31 03:02:00,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:00,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:02:00,764 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:02:00,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-31 03:02:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-31 03:02:00,965 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:02:00,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:02:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2058981304, now seen corresponding path program 19 times [2023-08-31 03:02:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:02:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37462672] [2023-08-31 03:02:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:02:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:02:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:02:01,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:02:01,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37462672] [2023-08-31 03:02:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37462672] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:02:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542475710] [2023-08-31 03:02:01,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 03:02:01,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:01,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:02:01,093 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:02:01,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-31 03:02:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:01,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:02:01,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:02:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:02:01,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:02:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:02:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542475710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:02:01,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:02:01,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-31 03:02:01,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813482945] [2023-08-31 03:02:01,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:02:01,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-31 03:02:01,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:02:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-31 03:02:01,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-31 03:02:01,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:02:01,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 992 transitions, 19914 flow. Second operand has 18 states, 18 states have (on average 137.44444444444446) internal successors, (2474), 18 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:01,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:02:01,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:02:01,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:02:04,558 INFO L130 PetriNetUnfolder]: 5148/8230 cut-off events. [2023-08-31 03:02:04,558 INFO L131 PetriNetUnfolder]: For 247984/248087 co-relation queries the response was YES. [2023-08-31 03:02:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84492 conditions, 8230 events. 5148/8230 cut-off events. For 247984/248087 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 50848 event pairs, 841 based on Foata normal form. 87/8307 useless extension candidates. Maximal degree in co-relation 84354. Up to 4387 conditions per place. [2023-08-31 03:02:04,661 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 802 selfloop transitions, 267 changer transitions 0/1106 dead transitions. [2023-08-31 03:02:04,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1106 transitions, 24119 flow [2023-08-31 03:02:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 03:02:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 03:02:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-08-31 03:02:04,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025495750708215 [2023-08-31 03:02:04,662 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-08-31 03:02:04,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-08-31 03:02:04,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:02:04,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-08-31 03:02:04,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:04,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:04,665 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:04,665 INFO L175 Difference]: Start difference. First operand has 346 places, 992 transitions, 19914 flow. Second operand 10 states and 1421 transitions. [2023-08-31 03:02:04,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1106 transitions, 24119 flow [2023-08-31 03:02:06,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1106 transitions, 22799 flow, removed 271 selfloop flow, removed 20 redundant places. [2023-08-31 03:02:06,109 INFO L231 Difference]: Finished difference. Result has 329 places, 983 transitions, 19476 flow [2023-08-31 03:02:06,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18024, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19476, PETRI_PLACES=329, PETRI_TRANSITIONS=983} [2023-08-31 03:02:06,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2023-08-31 03:02:06,110 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 983 transitions, 19476 flow [2023-08-31 03:02:06,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.44444444444446) internal successors, (2474), 18 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:06,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:02:06,110 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:02:06,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-31 03:02:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-31 03:02:06,311 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:02:06,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:02:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1537945544, now seen corresponding path program 20 times [2023-08-31 03:02:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:02:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953047267] [2023-08-31 03:02:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:02:06,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:02:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:06,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:02:06,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953047267] [2023-08-31 03:02:06,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953047267] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:02:06,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879008685] [2023-08-31 03:02:06,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:02:06,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:02:06,419 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:02:06,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-31 03:02:06,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:02:06,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:02:06,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:02:06,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:02:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:06,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:02:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879008685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:02:06,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:02:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-31 03:02:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371352524] [2023-08-31 03:02:06,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:02:06,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-31 03:02:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:02:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-31 03:02:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-08-31 03:02:07,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:02:07,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 983 transitions, 19476 flow. Second operand has 21 states, 21 states have (on average 136.95238095238096) internal successors, (2876), 21 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:07,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:02:07,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:02:07,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:02:09,850 INFO L130 PetriNetUnfolder]: 5100/8131 cut-off events. [2023-08-31 03:02:09,850 INFO L131 PetriNetUnfolder]: For 240212/240299 co-relation queries the response was YES. [2023-08-31 03:02:09,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82978 conditions, 8131 events. 5100/8131 cut-off events. For 240212/240299 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 49891 event pairs, 839 based on Foata normal form. 69/8194 useless extension candidates. Maximal degree in co-relation 82842. Up to 4221 conditions per place. [2023-08-31 03:02:09,942 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 681 selfloop transitions, 365 changer transitions 0/1083 dead transitions. [2023-08-31 03:02:09,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1083 transitions, 23229 flow [2023-08-31 03:02:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 03:02:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 03:02:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1571 transitions. [2023-08-31 03:02:09,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40458408447077004 [2023-08-31 03:02:09,946 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1571 transitions. [2023-08-31 03:02:09,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1571 transitions. [2023-08-31 03:02:09,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:02:09,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1571 transitions. [2023-08-31 03:02:09,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.8181818181818) internal successors, (1571), 11 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:09,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:09,951 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:09,951 INFO L175 Difference]: Start difference. First operand has 329 places, 983 transitions, 19476 flow. Second operand 11 states and 1571 transitions. [2023-08-31 03:02:09,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1083 transitions, 23229 flow [2023-08-31 03:02:11,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1083 transitions, 22878 flow, removed 93 selfloop flow, removed 5 redundant places. [2023-08-31 03:02:11,246 INFO L231 Difference]: Finished difference. Result has 333 places, 982 transitions, 19839 flow [2023-08-31 03:02:11,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19109, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19839, PETRI_PLACES=333, PETRI_TRANSITIONS=982} [2023-08-31 03:02:11,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2023-08-31 03:02:11,247 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 982 transitions, 19839 flow [2023-08-31 03:02:11,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 136.95238095238096) internal successors, (2876), 21 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:11,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:02:11,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:02:11,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-31 03:02:11,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-31 03:02:11,451 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:02:11,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:02:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1116558660, now seen corresponding path program 21 times [2023-08-31 03:02:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:02:11,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324477728] [2023-08-31 03:02:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:02:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:02:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:11,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:02:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324477728] [2023-08-31 03:02:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324477728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:02:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337214625] [2023-08-31 03:02:11,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:02:11,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:11,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:02:11,560 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:02:11,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-31 03:02:11,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:02:11,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:02:11,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:02:11,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:02:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:11,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:02:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:11,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337214625] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:02:11,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:02:11,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-31 03:02:11,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015641835] [2023-08-31 03:02:11,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:02:11,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 03:02:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:02:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 03:02:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-31 03:02:12,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:02:12,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 982 transitions, 19839 flow. Second operand has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:12,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:02:12,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:02:12,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:02:14,688 INFO L130 PetriNetUnfolder]: 5019/7953 cut-off events. [2023-08-31 03:02:14,688 INFO L131 PetriNetUnfolder]: For 244884/244971 co-relation queries the response was YES. [2023-08-31 03:02:14,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81842 conditions, 7953 events. 5019/7953 cut-off events. For 244884/244971 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48070 event pairs, 877 based on Foata normal form. 85/8028 useless extension candidates. Maximal degree in co-relation 81706. Up to 4387 conditions per place. [2023-08-31 03:02:14,909 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1036 dead transitions. [2023-08-31 03:02:14,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1036 transitions, 22821 flow [2023-08-31 03:02:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 03:02:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 03:02:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-08-31 03:02:14,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025495750708215 [2023-08-31 03:02:14,911 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-08-31 03:02:14,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-08-31 03:02:14,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:02:14,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-08-31 03:02:14,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:14,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:14,914 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:14,914 INFO L175 Difference]: Start difference. First operand has 333 places, 982 transitions, 19839 flow. Second operand 10 states and 1421 transitions. [2023-08-31 03:02:14,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1036 transitions, 22821 flow [2023-08-31 03:02:16,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1036 transitions, 22186 flow, removed 45 selfloop flow, removed 10 redundant places. [2023-08-31 03:02:16,091 INFO L231 Difference]: Finished difference. Result has 327 places, 958 transitions, 19481 flow [2023-08-31 03:02:16,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18694, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19481, PETRI_PLACES=327, PETRI_TRANSITIONS=958} [2023-08-31 03:02:16,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2023-08-31 03:02:16,092 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 958 transitions, 19481 flow [2023-08-31 03:02:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:16,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:02:16,093 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:02:16,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-31 03:02:16,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-31 03:02:16,297 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:02:16,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:02:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1471763192, now seen corresponding path program 22 times [2023-08-31 03:02:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:02:16,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364783199] [2023-08-31 03:02:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:02:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:02:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:02:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:02:16,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364783199] [2023-08-31 03:02:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364783199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:02:16,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45693461] [2023-08-31 03:02:16,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:02:16,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:16,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:02:16,406 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:02:16,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-31 03:02:16,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:02:16,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:02:16,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:02:16,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:02:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:02:16,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:02:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:02:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45693461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:02:16,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:02:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-31 03:02:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441505958] [2023-08-31 03:02:16,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:02:16,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-31 03:02:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:02:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-31 03:02:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-31 03:02:17,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:02:17,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 958 transitions, 19481 flow. Second operand has 21 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:17,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:02:17,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:02:17,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:02:19,941 INFO L130 PetriNetUnfolder]: 4936/7811 cut-off events. [2023-08-31 03:02:19,942 INFO L131 PetriNetUnfolder]: For 243527/243620 co-relation queries the response was YES. [2023-08-31 03:02:19,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80534 conditions, 7811 events. 4936/7811 cut-off events. For 243527/243620 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 47012 event pairs, 526 based on Foata normal form. 103/7890 useless extension candidates. Maximal degree in co-relation 80398. Up to 2911 conditions per place. [2023-08-31 03:02:20,027 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 604 selfloop transitions, 498 changer transitions 0/1137 dead transitions. [2023-08-31 03:02:20,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1137 transitions, 24707 flow [2023-08-31 03:02:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 03:02:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 03:02:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2300 transitions. [2023-08-31 03:02:20,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40722379603399433 [2023-08-31 03:02:20,029 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2300 transitions. [2023-08-31 03:02:20,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2300 transitions. [2023-08-31 03:02:20,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:02:20,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2300 transitions. [2023-08-31 03:02:20,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 143.75) internal successors, (2300), 16 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:20,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:20,033 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:20,033 INFO L175 Difference]: Start difference. First operand has 327 places, 958 transitions, 19481 flow. Second operand 16 states and 2300 transitions. [2023-08-31 03:02:20,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1137 transitions, 24707 flow [2023-08-31 03:02:21,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1137 transitions, 24396 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-31 03:02:21,214 INFO L231 Difference]: Finished difference. Result has 332 places, 958 transitions, 20411 flow [2023-08-31 03:02:21,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19090, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20411, PETRI_PLACES=332, PETRI_TRANSITIONS=958} [2023-08-31 03:02:21,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2023-08-31 03:02:21,215 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 958 transitions, 20411 flow [2023-08-31 03:02:21,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:21,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:02:21,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:02:21,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-31 03:02:21,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:21,416 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:02:21,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:02:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1034104112, now seen corresponding path program 23 times [2023-08-31 03:02:21,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:02:21,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983132598] [2023-08-31 03:02:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:02:21,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:02:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:21,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:02:21,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983132598] [2023-08-31 03:02:21,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983132598] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:02:21,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892146113] [2023-08-31 03:02:21,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:02:21,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:21,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:02:21,528 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:02:21,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-31 03:02:21,688 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:02:21,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:02:21,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:02:21,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:02:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:21,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:02:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:21,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892146113] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:02:21,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:02:21,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-08-31 03:02:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910008237] [2023-08-31 03:02:21,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:02:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 03:02:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:02:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 03:02:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-08-31 03:02:22,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 353 [2023-08-31 03:02:22,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 958 transitions, 20411 flow. Second operand has 17 states, 17 states have (on average 133.64705882352942) internal successors, (2272), 17 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:22,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:02:22,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 353 [2023-08-31 03:02:22,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:02:24,937 INFO L130 PetriNetUnfolder]: 4976/7810 cut-off events. [2023-08-31 03:02:24,938 INFO L131 PetriNetUnfolder]: For 245461/245461 co-relation queries the response was YES. [2023-08-31 03:02:24,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81765 conditions, 7810 events. 4976/7810 cut-off events. For 245461/245461 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 45950 event pairs, 345 based on Foata normal form. 46/7853 useless extension candidates. Maximal degree in co-relation 81630. Up to 2863 conditions per place. [2023-08-31 03:02:25,027 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 584 selfloop transitions, 569 changer transitions 0/1153 dead transitions. [2023-08-31 03:02:25,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1153 transitions, 26748 flow [2023-08-31 03:02:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 03:02:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 03:02:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2758 transitions. [2023-08-31 03:02:25,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39065155807365437 [2023-08-31 03:02:25,029 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2758 transitions. [2023-08-31 03:02:25,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2758 transitions. [2023-08-31 03:02:25,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:02:25,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2758 transitions. [2023-08-31 03:02:25,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.9) internal successors, (2758), 20 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:25,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:25,035 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:25,035 INFO L175 Difference]: Start difference. First operand has 332 places, 958 transitions, 20411 flow. Second operand 20 states and 2758 transitions. [2023-08-31 03:02:25,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1153 transitions, 26748 flow [2023-08-31 03:02:26,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1153 transitions, 25541 flow, removed 94 selfloop flow, removed 12 redundant places. [2023-08-31 03:02:26,420 INFO L231 Difference]: Finished difference. Result has 341 places, 993 transitions, 21826 flow [2023-08-31 03:02:26,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19320, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=21826, PETRI_PLACES=341, PETRI_TRANSITIONS=993} [2023-08-31 03:02:26,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2023-08-31 03:02:26,421 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 993 transitions, 21826 flow [2023-08-31 03:02:26,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 133.64705882352942) internal successors, (2272), 17 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:26,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:02:26,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:02:26,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-31 03:02:26,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:26,622 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:02:26,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:02:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -844689024, now seen corresponding path program 24 times [2023-08-31 03:02:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:02:26,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106100800] [2023-08-31 03:02:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:02:26,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:02:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:02:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106100800] [2023-08-31 03:02:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106100800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:02:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180377499] [2023-08-31 03:02:26,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:02:26,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:02:26,716 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:02:26,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-31 03:02:26,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 03:02:26,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:02:26,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:02:26,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:02:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:26,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:02:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 03:02:27,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180377499] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:02:27,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:02:27,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-31 03:02:27,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787034163] [2023-08-31 03:02:27,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:02:27,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 03:02:27,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:02:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 03:02:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-31 03:02:27,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-31 03:02:27,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 993 transitions, 21826 flow. Second operand has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:27,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:02:27,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-31 03:02:27,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:02:30,033 INFO L130 PetriNetUnfolder]: 4844/7599 cut-off events. [2023-08-31 03:02:30,034 INFO L131 PetriNetUnfolder]: For 245831/245942 co-relation queries the response was YES. [2023-08-31 03:02:30,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80606 conditions, 7599 events. 4844/7599 cut-off events. For 245831/245942 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44737 event pairs, 1064 based on Foata normal form. 41/7614 useless extension candidates. Maximal degree in co-relation 80468. Up to 5787 conditions per place. [2023-08-31 03:02:30,121 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1039 dead transitions. [2023-08-31 03:02:30,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1039 transitions, 24366 flow [2023-08-31 03:02:30,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 03:02:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 03:02:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1414 transitions. [2023-08-31 03:02:30,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005665722379603 [2023-08-31 03:02:30,122 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1414 transitions. [2023-08-31 03:02:30,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1414 transitions. [2023-08-31 03:02:30,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:02:30,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1414 transitions. [2023-08-31 03:02:30,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.4) internal successors, (1414), 10 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:30,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:30,126 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:30,126 INFO L175 Difference]: Start difference. First operand has 341 places, 993 transitions, 21826 flow. Second operand 10 states and 1414 transitions. [2023-08-31 03:02:30,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1039 transitions, 24366 flow [2023-08-31 03:02:31,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1039 transitions, 24002 flow, removed 102 selfloop flow, removed 6 redundant places. [2023-08-31 03:02:31,287 INFO L231 Difference]: Finished difference. Result has 345 places, 994 transitions, 22014 flow [2023-08-31 03:02:31,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21237, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22014, PETRI_PLACES=345, PETRI_TRANSITIONS=994} [2023-08-31 03:02:31,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-08-31 03:02:31,288 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 994 transitions, 22014 flow [2023-08-31 03:02:31,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:02:31,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:02:31,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:02:31,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-31 03:02:31,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-31 03:02:31,489 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:02:31,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:02:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash 964857070, now seen corresponding path program 6 times [2023-08-31 03:02:31,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:02:31,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639704477] [2023-08-31 03:02:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:02:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:02:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:02:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:02:33,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:02:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639704477] [2023-08-31 03:02:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639704477] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:02:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507771993] [2023-08-31 03:02:33,122 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:02:33,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:02:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:02:33,123 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:02:33,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-31 03:02:33,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 03:02:33,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:02:33,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 118 conjunts are in the unsatisfiable core [2023-08-31 03:02:33,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:02:33,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:33,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:33,328 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2023-08-31 03:02:33,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2023-08-31 03:02:33,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:33,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:33,545 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-31 03:02:33,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 37 [2023-08-31 03:02:33,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2023-08-31 03:02:33,750 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 03:02:33,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:34,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:34,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-08-31 03:02:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:34,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-08-31 03:02:34,279 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:02:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:02:34,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 15 [2023-08-31 03:02:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:02:34,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:02:34,570 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= c_~res1~0 (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse1 (select .cse3 c_~A~0.base)) (.cse0 (select .cse3 c_~B~0.base)) (.cse2 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse0 c_~B~0.offset) c_~res2~0 (select .cse1 c_~A~0.offset) (select .cse1 (+ c_~A~0.offset .cse2)) (select .cse0 (+ .cse2 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-08-31 03:02:34,689 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= (let ((.cse2 (select |c_#memory_int| c_~B~0.base)) (.cse0 (select |c_#memory_int| c_~A~0.base)) (.cse1 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (+ (select .cse0 (+ c_~A~0.offset .cse1)) (select .cse2 (+ c_~B~0.offset .cse1)) c_~res1~0 (select .cse2 (+ 4 c_~B~0.offset .cse1)) (select .cse0 (+ c_~A~0.offset 4 .cse1)))) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse4 (select .cse6 c_~A~0.base)) (.cse3 (select .cse6 c_~B~0.base)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse3 c_~B~0.offset) c_~res2~0 (select .cse4 c_~A~0.offset) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-08-31 03:02:34,825 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int)) (v_ArrVal_1760 (Array Int Int))) (or (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1760))) (= (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse0 (select .cse2 c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset 4)) c_~res1~0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 c_~A~0.offset))) (let ((.cse6 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse3 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4)) (.cse4 (select .cse6 c_~A~0.base))) (+ (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~res2~0 (select .cse4 c_~A~0.offset)))))))) is different from false [2023-08-31 03:02:34,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:02:34,841 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 201 treesize of output 118 [2023-08-31 03:02:35,099 INFO L321 Elim1Store]: treesize reduction 16, result has 89.7 percent of original size [2023-08-31 03:02:35,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110582 treesize of output 86145 [2023-08-31 03:02:35,396 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:02:35,396 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:02:35,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:02:35,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2614 treesize of output 2398 [2023-08-31 03:02:35,455 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:02:35,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:02:35,519 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:02:35,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 2358 treesize of output 2022 [2023-08-31 03:02:35,559 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:02:35,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:02:35,595 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:02:35,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1910 treesize of output 1438 [2023-08-31 03:03:25,588 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:03:43,340 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:03:52,422 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:05:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-08-31 03:05:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507771993] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:05:55,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:05:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 42 [2023-08-31 03:05:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756006934] [2023-08-31 03:05:55,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:05:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-31 03:05:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:05:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-31 03:05:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1475, Unknown=13, NotChecked=240, Total=1892 [2023-08-31 03:05:57,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:05:57,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-08-31 03:05:57,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 994 transitions, 22014 flow. Second operand has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:05:57,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:05:57,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-08-31 03:05:57,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:06:05,358 INFO L130 PetriNetUnfolder]: 7755/12152 cut-off events. [2023-08-31 03:06:05,358 INFO L131 PetriNetUnfolder]: For 424246/424246 co-relation queries the response was YES. [2023-08-31 03:06:05,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132468 conditions, 12152 events. 7755/12152 cut-off events. For 424246/424246 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 76776 event pairs, 639 based on Foata normal form. 13/12159 useless extension candidates. Maximal degree in co-relation 132329. Up to 7555 conditions per place. [2023-08-31 03:06:05,545 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 1029 selfloop transitions, 765 changer transitions 16/1810 dead transitions. [2023-08-31 03:06:05,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1810 transitions, 44533 flow [2023-08-31 03:06:05,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-31 03:06:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-31 03:06:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2536 transitions. [2023-08-31 03:06:05,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2565762849048968 [2023-08-31 03:06:05,548 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2536 transitions. [2023-08-31 03:06:05,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2536 transitions. [2023-08-31 03:06:05,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:06:05,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2536 transitions. [2023-08-31 03:06:05,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 90.57142857142857) internal successors, (2536), 28 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:05,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:05,554 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:05,554 INFO L175 Difference]: Start difference. First operand has 345 places, 994 transitions, 22014 flow. Second operand 28 states and 2536 transitions. [2023-08-31 03:06:05,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1810 transitions, 44533 flow [2023-08-31 03:06:09,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1810 transitions, 43349 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-31 03:06:09,231 INFO L231 Difference]: Finished difference. Result has 377 places, 1524 transitions, 37404 flow [2023-08-31 03:06:09,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21444, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=37404, PETRI_PLACES=377, PETRI_TRANSITIONS=1524} [2023-08-31 03:06:09,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2023-08-31 03:06:09,232 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1524 transitions, 37404 flow [2023-08-31 03:06:09,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:09,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:06:09,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:06:09,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-31 03:06:09,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:06:09,433 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:06:09,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:06:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash 66394832, now seen corresponding path program 7 times [2023-08-31 03:06:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:06:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016472544] [2023-08-31 03:06:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:06:09,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:06:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:06:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:06:10,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:06:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016472544] [2023-08-31 03:06:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016472544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:06:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196199408] [2023-08-31 03:06:10,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 03:06:10,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:06:10,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:06:10,385 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:06:10,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-31 03:06:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:06:10,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-31 03:06:10,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:06:10,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:06:10,929 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-08-31 03:06:10,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 37 [2023-08-31 03:06:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:06:10,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:06:11,443 INFO L321 Elim1Store]: treesize reduction 16, result has 95.1 percent of original size [2023-08-31 03:06:11,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 71 treesize of output 326 [2023-08-31 03:06:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:06:42,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196199408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:06:42,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:06:42,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 30 [2023-08-31 03:06:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337473882] [2023-08-31 03:06:42,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:06:42,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-31 03:06:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:06:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-31 03:06:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-08-31 03:06:44,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-08-31 03:06:44,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1524 transitions, 37404 flow. Second operand has 32 states, 32 states have (on average 121.96875) internal successors, (3903), 32 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:44,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:06:44,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-08-31 03:06:44,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:06:55,282 INFO L130 PetriNetUnfolder]: 11680/18604 cut-off events. [2023-08-31 03:06:55,282 INFO L131 PetriNetUnfolder]: For 763154/763154 co-relation queries the response was YES. [2023-08-31 03:06:55,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214074 conditions, 18604 events. 11680/18604 cut-off events. For 763154/763154 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 130586 event pairs, 539 based on Foata normal form. 12/18615 useless extension candidates. Maximal degree in co-relation 213922. Up to 9991 conditions per place. [2023-08-31 03:06:55,541 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 1215 selfloop transitions, 1630 changer transitions 21/2866 dead transitions. [2023-08-31 03:06:55,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 2866 transitions, 73839 flow [2023-08-31 03:06:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-31 03:06:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-31 03:06:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 6726 transitions. [2023-08-31 03:06:55,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664196992808891 [2023-08-31 03:06:55,545 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 6726 transitions. [2023-08-31 03:06:55,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 6726 transitions. [2023-08-31 03:06:55,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:06:55,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 6726 transitions. [2023-08-31 03:06:55,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 129.34615384615384) internal successors, (6726), 52 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:55,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:55,557 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:06:55,558 INFO L175 Difference]: Start difference. First operand has 377 places, 1524 transitions, 37404 flow. Second operand 52 states and 6726 transitions. [2023-08-31 03:06:55,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 2866 transitions, 73839 flow [2023-08-31 03:07:03,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2866 transitions, 71805 flow, removed 1009 selfloop flow, removed 5 redundant places. [2023-08-31 03:07:03,131 INFO L231 Difference]: Finished difference. Result has 450 places, 2499 transitions, 67777 flow [2023-08-31 03:07:03,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=36352, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=67777, PETRI_PLACES=450, PETRI_TRANSITIONS=2499} [2023-08-31 03:07:03,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2023-08-31 03:07:03,132 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 2499 transitions, 67777 flow [2023-08-31 03:07:03,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 121.96875) internal successors, (3903), 32 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:07:03,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:07:03,133 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:07:03,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-31 03:07:03,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:03,334 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:07:03,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:07:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1612068568, now seen corresponding path program 8 times [2023-08-31 03:07:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:07:03,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285909862] [2023-08-31 03:07:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:07:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:04,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:07:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285909862] [2023-08-31 03:07:04,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285909862] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:07:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707581979] [2023-08-31 03:07:04,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:07:04,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:04,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:07:04,768 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:07:04,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-31 03:07:04,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:07:04,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:07:04,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 106 conjunts are in the unsatisfiable core [2023-08-31 03:07:04,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:07:05,168 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 [2023-08-31 03:07:05,223 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 [2023-08-31 03:07:05,277 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 [2023-08-31 03:07:05,330 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 [2023-08-31 03:07:05,739 INFO L321 Elim1Store]: treesize reduction 48, result has 54.3 percent of original size [2023-08-31 03:07:05,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 71 [2023-08-31 03:07:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:05,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15