./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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 ../sv-benchmarks/c/weaver/chl-array-int-subst.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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:01:36,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:01:36,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:01:36,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:01:36,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:01:36,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:01:36,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:01:36,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:01:36,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:01:36,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:01:36,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:01:36,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:01:36,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:01:36,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:01:36,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:01:36,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:01:36,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:01:36,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:01:36,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:01:36,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:01:36,113 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:01:36,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:01:36,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:01:36,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:01:36,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:01:36,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:01:36,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:01:36,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:01:36,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:01:36,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:01:36,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:01:36,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:01:36,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:01:36,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:01:36,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:01:36,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:01:36,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:01:36,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:01:36,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:01:36,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:01:36,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:01:36,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:01:36,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:01:36,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:01:36,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:01:36,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:01:36,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:01:36,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:01:36,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:01:36,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:01:36,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:01:36,156 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:01:36,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:01:36,156 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:01:36,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:01:36,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:01:36,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:01:36,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:01:36,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:01:36,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:01:36,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:01:36,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:01:36,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:01:36,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:01:36,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:01:36,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:01:36,159 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:01:36,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:01:36,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:01:36,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2022-07-13 22:01:36,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:01:36,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:01:36,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:01:36,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:01:36,370 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:01:36,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-07-13 22:01:36,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20348ab2/0c116483aa1e4c35896c32e62c09d2f6/FLAG072fddb87 [2022-07-13 22:01:36,816 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:01:36,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-07-13 22:01:36,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20348ab2/0c116483aa1e4c35896c32e62c09d2f6/FLAG072fddb87 [2022-07-13 22:01:36,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20348ab2/0c116483aa1e4c35896c32e62c09d2f6 [2022-07-13 22:01:36,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:01:36,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:01:36,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:01:36,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:01:36,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:01:36,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:01:36" (1/1) ... [2022-07-13 22:01:36,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cec8a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:36, skipping insertion in model container [2022-07-13 22:01:36,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:01:36" (1/1) ... [2022-07-13 22:01:36,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:01:36,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:01:37,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-07-13 22:01:37,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:01:37,075 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:01:37,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-07-13 22:01:37,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:01:37,102 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:01:37,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37 WrapperNode [2022-07-13 22:01:37,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:01:37,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:01:37,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:01:37,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:01:37,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,130 INFO L137 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 281 [2022-07-13 22:01:37,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:01:37,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:01:37,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:01:37,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:01:37,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:01:37,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:01:37,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:01:37,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:01:37,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (1/1) ... [2022-07-13 22:01:37,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:01:37,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:01:37,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:01:37,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:01:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:01:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:01:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:01:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:01:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:01:37,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:01:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:01:37,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:01:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:01:37,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:01:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:01:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:01:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:01:37,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:01:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:01:37,239 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:01:37,335 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:01:37,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:01:37,632 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:01:37,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:01:37,646 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:01:37,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:01:37 BoogieIcfgContainer [2022-07-13 22:01:37,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:01:37,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:01:37,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:01:37,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:01:37,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:01:36" (1/3) ... [2022-07-13 22:01:37,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fadcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:01:37, skipping insertion in model container [2022-07-13 22:01:37,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:01:37" (2/3) ... [2022-07-13 22:01:37,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fadcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:01:37, skipping insertion in model container [2022-07-13 22:01:37,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:01:37" (3/3) ... [2022-07-13 22:01:37,655 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2022-07-13 22:01:37,661 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:01:37,666 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:01:37,667 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:01:37,667 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:01:37,792 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:01:37,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 339 places, 358 transitions, 740 flow [2022-07-13 22:01:37,935 INFO L129 PetriNetUnfolder]: 29/355 cut-off events. [2022-07-13 22:01:37,935 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:01:37,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 355 events. 29/355 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 584 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-07-13 22:01:37,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 358 transitions, 740 flow [2022-07-13 22:01:37,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 344 transitions, 706 flow [2022-07-13 22:01:37,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:01:37,975 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74da2f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63a79d88 [2022-07-13 22:01:37,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:01:38,031 INFO L129 PetriNetUnfolder]: 29/343 cut-off events. [2022-07-13 22:01:38,032 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:01:38,032 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:38,032 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:01:38,033 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)] === [2022-07-13 22:01:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1953458268, now seen corresponding path program 1 times [2022-07-13 22:01:38,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:38,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699439144] [2022-07-13 22:01:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:38,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:38,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:38,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699439144] [2022-07-13 22:01:38,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699439144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:01:38,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:01:38,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:01:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436899918] [2022-07-13 22:01:38,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:38,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:01:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:01:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:01:38,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 358 [2022-07-13 22:01:38,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 344 transitions, 706 flow. Second operand has 2 states, 2 states have (on average 335.5) internal successors, (671), 2 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:38,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:38,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 358 [2022-07-13 22:01:38,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:38,357 INFO L129 PetriNetUnfolder]: 9/324 cut-off events. [2022-07-13 22:01:38,358 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-13 22:01:38,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 324 events. 9/324 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 563 event pairs, 0 based on Foata normal form. 26/327 useless extension candidates. Maximal degree in co-relation 256. Up to 7 conditions per place. [2022-07-13 22:01:38,361 INFO L132 encePairwiseOnDemand]: 338/358 looper letters, 6 selfloop transitions, 0 changer transitions 8/324 dead transitions. [2022-07-13 22:01:38,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 324 transitions, 678 flow [2022-07-13 22:01:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:01:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:01:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 688 transitions. [2022-07-13 22:01:38,372 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9608938547486033 [2022-07-13 22:01:38,372 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 688 transitions. [2022-07-13 22:01:38,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 688 transitions. [2022-07-13 22:01:38,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:38,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 688 transitions. [2022-07-13 22:01:38,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 344.0) internal successors, (688), 2 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:38,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:38,384 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:38,385 INFO L186 Difference]: Start difference. First operand has 325 places, 344 transitions, 706 flow. Second operand 2 states and 688 transitions. [2022-07-13 22:01:38,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 324 transitions, 678 flow [2022-07-13 22:01:38,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 324 transitions, 666 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:01:38,393 INFO L242 Difference]: Finished difference. Result has 320 places, 316 transitions, 638 flow [2022-07-13 22:01:38,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=638, PETRI_PLACES=320, PETRI_TRANSITIONS=316} [2022-07-13 22:01:38,397 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, -5 predicate places. [2022-07-13 22:01:38,397 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 316 transitions, 638 flow [2022-07-13 22:01:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 335.5) internal successors, (671), 2 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:38,398 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:38,398 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:01:38,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:01:38,399 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)] === [2022-07-13 22:01:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1280046237, now seen corresponding path program 1 times [2022-07-13 22:01:38,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:38,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846600474] [2022-07-13 22:01:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:39,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:39,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846600474] [2022-07-13 22:01:39,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846600474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:01:39,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:01:39,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:01:39,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804594703] [2022-07-13 22:01:39,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:39,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:01:39,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:01:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:01:39,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 358 [2022-07-13 22:01:39,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 316 transitions, 638 flow. Second operand has 27 states, 27 states have (on average 244.59259259259258) internal successors, (6604), 27 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:39,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:39,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 358 [2022-07-13 22:01:39,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:42,012 INFO L129 PetriNetUnfolder]: 1306/10262 cut-off events. [2022-07-13 22:01:42,012 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-07-13 22:01:42,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12162 conditions, 10262 events. 1306/10262 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 122732 event pairs, 714 based on Foata normal form. 1/9146 useless extension candidates. Maximal degree in co-relation 12159. Up to 418 conditions per place. [2022-07-13 22:01:42,079 INFO L132 encePairwiseOnDemand]: 321/358 looper letters, 222 selfloop transitions, 39 changer transitions 8/498 dead transitions. [2022-07-13 22:01:42,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 498 transitions, 1565 flow [2022-07-13 22:01:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:01:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-13 22:01:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8498 transitions. [2022-07-13 22:01:42,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.698159710811699 [2022-07-13 22:01:42,093 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8498 transitions. [2022-07-13 22:01:42,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8498 transitions. [2022-07-13 22:01:42,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:42,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8498 transitions. [2022-07-13 22:01:42,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 249.94117647058823) internal successors, (8498), 34 states have internal predecessors, (8498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:42,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 358.0) internal successors, (12530), 35 states have internal predecessors, (12530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:42,131 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 358.0) internal successors, (12530), 35 states have internal predecessors, (12530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:42,131 INFO L186 Difference]: Start difference. First operand has 320 places, 316 transitions, 638 flow. Second operand 34 states and 8498 transitions. [2022-07-13 22:01:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 498 transitions, 1565 flow [2022-07-13 22:01:42,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 498 transitions, 1565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:01:42,138 INFO L242 Difference]: Finished difference. Result has 363 places, 343 transitions, 865 flow [2022-07-13 22:01:42,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=865, PETRI_PLACES=363, PETRI_TRANSITIONS=343} [2022-07-13 22:01:42,139 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 38 predicate places. [2022-07-13 22:01:42,139 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 343 transitions, 865 flow [2022-07-13 22:01:42,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 244.59259259259258) internal successors, (6604), 27 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:42,142 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:42,142 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:01:42,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:01:42,142 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)] === [2022-07-13 22:01:42,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash 237870383, now seen corresponding path program 2 times [2022-07-13 22:01:42,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:42,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744873614] [2022-07-13 22:01:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:42,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:42,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744873614] [2022-07-13 22:01:42,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744873614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:01:42,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:01:42,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-13 22:01:42,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557950473] [2022-07-13 22:01:42,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 22:01:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 22:01:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-07-13 22:01:42,825 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-07-13 22:01:42,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 343 transitions, 865 flow. Second operand has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:42,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:42,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-07-13 22:01:42,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:47,435 INFO L129 PetriNetUnfolder]: 2239/16958 cut-off events. [2022-07-13 22:01:47,435 INFO L130 PetriNetUnfolder]: For 1635/1707 co-relation queries the response was YES. [2022-07-13 22:01:47,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21437 conditions, 16958 events. 2239/16958 cut-off events. For 1635/1707 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 221359 event pairs, 1190 based on Foata normal form. 27/15038 useless extension candidates. Maximal degree in co-relation 21415. Up to 500 conditions per place. [2022-07-13 22:01:47,569 INFO L132 encePairwiseOnDemand]: 316/358 looper letters, 271 selfloop transitions, 52 changer transitions 8/558 dead transitions. [2022-07-13 22:01:47,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 558 transitions, 2122 flow [2022-07-13 22:01:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 22:01:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-13 22:01:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 10647 transitions. [2022-07-13 22:01:47,587 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.691633103806678 [2022-07-13 22:01:47,587 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 10647 transitions. [2022-07-13 22:01:47,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 10647 transitions. [2022-07-13 22:01:47,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:47,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 10647 transitions. [2022-07-13 22:01:47,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 247.6046511627907) internal successors, (10647), 43 states have internal predecessors, (10647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:47,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 358.0) internal successors, (15752), 44 states have internal predecessors, (15752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:47,627 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 358.0) internal successors, (15752), 44 states have internal predecessors, (15752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:47,627 INFO L186 Difference]: Start difference. First operand has 363 places, 343 transitions, 865 flow. Second operand 43 states and 10647 transitions. [2022-07-13 22:01:47,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 558 transitions, 2122 flow [2022-07-13 22:01:47,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 558 transitions, 2077 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-07-13 22:01:47,641 INFO L242 Difference]: Finished difference. Result has 408 places, 359 transitions, 1095 flow [2022-07-13 22:01:47,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1095, PETRI_PLACES=408, PETRI_TRANSITIONS=359} [2022-07-13 22:01:47,642 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 83 predicate places. [2022-07-13 22:01:47,642 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 359 transitions, 1095 flow [2022-07-13 22:01:47,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:47,644 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:47,645 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:01:47,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:01:47,645 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)] === [2022-07-13 22:01:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash -30815151, now seen corresponding path program 3 times [2022-07-13 22:01:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:47,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970916518] [2022-07-13 22:01:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:47,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970916518] [2022-07-13 22:01:48,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970916518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:01:48,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:01:48,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-13 22:01:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067699747] [2022-07-13 22:01:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:48,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 22:01:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 22:01:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:01:48,283 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-07-13 22:01:48,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 359 transitions, 1095 flow. Second operand has 24 states, 24 states have (on average 242.95833333333334) internal successors, (5831), 24 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:48,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:48,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-07-13 22:01:48,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:52,396 INFO L129 PetriNetUnfolder]: 2538/19054 cut-off events. [2022-07-13 22:01:52,397 INFO L130 PetriNetUnfolder]: For 6338/6965 co-relation queries the response was YES. [2022-07-13 22:01:52,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26089 conditions, 19054 events. 2538/19054 cut-off events. For 6338/6965 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 251184 event pairs, 1062 based on Foata normal form. 38/16847 useless extension candidates. Maximal degree in co-relation 26054. Up to 940 conditions per place. [2022-07-13 22:01:52,555 INFO L132 encePairwiseOnDemand]: 318/358 looper letters, 222 selfloop transitions, 58 changer transitions 8/515 dead transitions. [2022-07-13 22:01:52,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 515 transitions, 2254 flow [2022-07-13 22:01:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:01:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-13 22:01:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8416 transitions. [2022-07-13 22:01:52,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6914229378902399 [2022-07-13 22:01:52,568 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8416 transitions. [2022-07-13 22:01:52,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8416 transitions. [2022-07-13 22:01:52,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:52,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8416 transitions. [2022-07-13 22:01:52,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 247.52941176470588) internal successors, (8416), 34 states have internal predecessors, (8416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:52,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 358.0) internal successors, (12530), 35 states have internal predecessors, (12530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:52,601 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 358.0) internal successors, (12530), 35 states have internal predecessors, (12530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:52,601 INFO L186 Difference]: Start difference. First operand has 408 places, 359 transitions, 1095 flow. Second operand 34 states and 8416 transitions. [2022-07-13 22:01:52,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 515 transitions, 2254 flow [2022-07-13 22:01:52,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 515 transitions, 2118 flow, removed 36 selfloop flow, removed 32 redundant places. [2022-07-13 22:01:52,617 INFO L242 Difference]: Finished difference. Result has 414 places, 377 transitions, 1337 flow [2022-07-13 22:01:52,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1337, PETRI_PLACES=414, PETRI_TRANSITIONS=377} [2022-07-13 22:01:52,618 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 89 predicate places. [2022-07-13 22:01:52,622 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 377 transitions, 1337 flow [2022-07-13 22:01:52,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 242.95833333333334) internal successors, (5831), 24 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:52,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:52,623 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:01:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:01:52,624 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)] === [2022-07-13 22:01:52,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash 608820589, now seen corresponding path program 4 times [2022-07-13 22:01:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:52,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907984658] [2022-07-13 22:01:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:53,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:53,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907984658] [2022-07-13 22:01:53,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907984658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:01:53,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:01:53,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:01:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190524627] [2022-07-13 22:01:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:53,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:01:53,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:53,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:01:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:01:53,277 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 358 [2022-07-13 22:01:53,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 377 transitions, 1337 flow. Second operand has 27 states, 27 states have (on average 244.59259259259258) internal successors, (6604), 27 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:53,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:53,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 358 [2022-07-13 22:01:53,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:57,093 INFO L129 PetriNetUnfolder]: 2335/18037 cut-off events. [2022-07-13 22:01:57,094 INFO L130 PetriNetUnfolder]: For 11305/12077 co-relation queries the response was YES. [2022-07-13 22:01:57,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25761 conditions, 18037 events. 2335/18037 cut-off events. For 11305/12077 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 237616 event pairs, 1216 based on Foata normal form. 49/16012 useless extension candidates. Maximal degree in co-relation 25721. Up to 778 conditions per place. [2022-07-13 22:01:57,243 INFO L132 encePairwiseOnDemand]: 321/358 looper letters, 250 selfloop transitions, 60 changer transitions 8/553 dead transitions. [2022-07-13 22:01:57,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 553 transitions, 2605 flow [2022-07-13 22:01:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-13 22:01:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-13 22:01:57,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9737 transitions. [2022-07-13 22:01:57,254 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6973929236499069 [2022-07-13 22:01:57,254 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 9737 transitions. [2022-07-13 22:01:57,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 9737 transitions. [2022-07-13 22:01:57,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:57,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 9737 transitions. [2022-07-13 22:01:57,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 249.66666666666666) internal successors, (9737), 39 states have internal predecessors, (9737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:57,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 358.0) internal successors, (14320), 40 states have internal predecessors, (14320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:57,282 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 358.0) internal successors, (14320), 40 states have internal predecessors, (14320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:57,282 INFO L186 Difference]: Start difference. First operand has 414 places, 377 transitions, 1337 flow. Second operand 39 states and 9737 transitions. [2022-07-13 22:01:57,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 553 transitions, 2605 flow [2022-07-13 22:01:57,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 553 transitions, 2455 flow, removed 46 selfloop flow, removed 25 redundant places. [2022-07-13 22:01:57,301 INFO L242 Difference]: Finished difference. Result has 426 places, 381 transitions, 1439 flow [2022-07-13 22:01:57,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1439, PETRI_PLACES=426, PETRI_TRANSITIONS=381} [2022-07-13 22:01:57,304 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 101 predicate places. [2022-07-13 22:01:57,304 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 381 transitions, 1439 flow [2022-07-13 22:01:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 244.59259259259258) internal successors, (6604), 27 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:57,306 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:57,306 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:01:57,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:01:57,306 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)] === [2022-07-13 22:01:57,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:57,307 INFO L85 PathProgramCache]: Analyzing trace with hash 477865303, now seen corresponding path program 1 times [2022-07-13 22:01:57,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:57,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735888045] [2022-07-13 22:01:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:57,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:57,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735888045] [2022-07-13 22:01:57,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735888045] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:01:57,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208788933] [2022-07-13 22:01:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:57,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:01:57,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:01:57,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:01:57,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:01:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:57,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 22:01:57,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:01:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:57,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:01:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:58,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208788933] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:01:58,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:01:58,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-07-13 22:01:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274432622] [2022-07-13 22:01:58,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:01:58,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:58,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:01:58,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:01:58,241 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 358 [2022-07-13 22:01:58,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 381 transitions, 1439 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:58,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:58,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 358 [2022-07-13 22:01:58,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:02:01,418 INFO L129 PetriNetUnfolder]: 2463/20707 cut-off events. [2022-07-13 22:02:01,418 INFO L130 PetriNetUnfolder]: For 11281/11815 co-relation queries the response was YES. [2022-07-13 22:02:01,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29091 conditions, 20707 events. 2463/20707 cut-off events. For 11281/11815 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 283339 event pairs, 1534 based on Foata normal form. 17/18444 useless extension candidates. Maximal degree in co-relation 29051. Up to 2277 conditions per place. [2022-07-13 22:02:01,592 INFO L132 encePairwiseOnDemand]: 336/358 looper letters, 193 selfloop transitions, 35 changer transitions 6/485 dead transitions. [2022-07-13 22:02:01,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 485 transitions, 2248 flow [2022-07-13 22:02:01,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:02:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:02:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4632 transitions. [2022-07-13 22:02:01,597 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7188081936685289 [2022-07-13 22:02:01,598 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4632 transitions. [2022-07-13 22:02:01,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4632 transitions. [2022-07-13 22:02:01,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:02:01,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4632 transitions. [2022-07-13 22:02:01,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 257.3333333333333) internal successors, (4632), 18 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:01,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 358.0) internal successors, (6802), 19 states have internal predecessors, (6802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:01,623 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 358.0) internal successors, (6802), 19 states have internal predecessors, (6802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:01,623 INFO L186 Difference]: Start difference. First operand has 426 places, 381 transitions, 1439 flow. Second operand 18 states and 4632 transitions. [2022-07-13 22:02:01,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 485 transitions, 2248 flow [2022-07-13 22:02:01,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 485 transitions, 2139 flow, removed 8 selfloop flow, removed 35 redundant places. [2022-07-13 22:02:01,647 INFO L242 Difference]: Finished difference. Result has 413 places, 396 transitions, 1522 flow [2022-07-13 22:02:01,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1522, PETRI_PLACES=413, PETRI_TRANSITIONS=396} [2022-07-13 22:02:01,648 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 88 predicate places. [2022-07-13 22:02:01,648 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 396 transitions, 1522 flow [2022-07-13 22:02:01,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:01,649 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:02:01,649 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:02:01,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:02:01,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 22:02:01,873 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)] === [2022-07-13 22:02:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:02:01,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1947793187, now seen corresponding path program 1 times [2022-07-13 22:02:01,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:02:01,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758414319] [2022-07-13 22:02:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:02:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:02:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:02:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:02,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:02:02,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758414319] [2022-07-13 22:02:02,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758414319] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:02,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153652673] [2022-07-13 22:02:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:02:02,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:02:02,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:02:02,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:02:02,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:02:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:02:02,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 22:02:02,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:02:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:02,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:02:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:03,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153652673] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:03,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:02:03,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-07-13 22:02:03,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933564093] [2022-07-13 22:02:03,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:02:03,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 22:02:03,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:02:03,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 22:02:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 22:02:03,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 358 [2022-07-13 22:02:03,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 396 transitions, 1522 flow. Second operand has 18 states, 18 states have (on average 246.11111111111111) internal successors, (4430), 18 states have internal predecessors, (4430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:03,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:02:03,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 358 [2022-07-13 22:02:03,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:02:07,647 INFO L129 PetriNetUnfolder]: 2778/21706 cut-off events. [2022-07-13 22:02:07,648 INFO L130 PetriNetUnfolder]: For 15030/16056 co-relation queries the response was YES. [2022-07-13 22:02:07,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31287 conditions, 21706 events. 2778/21706 cut-off events. For 15030/16056 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 295935 event pairs, 1654 based on Foata normal form. 17/19214 useless extension candidates. Maximal degree in co-relation 31243. Up to 1162 conditions per place. [2022-07-13 22:02:07,815 INFO L132 encePairwiseOnDemand]: 328/358 looper letters, 237 selfloop transitions, 52 changer transitions 8/533 dead transitions. [2022-07-13 22:02:07,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 533 transitions, 2621 flow [2022-07-13 22:02:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:02:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:02:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7520 transitions. [2022-07-13 22:02:07,822 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7001862197392924 [2022-07-13 22:02:07,822 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7520 transitions. [2022-07-13 22:02:07,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7520 transitions. [2022-07-13 22:02:07,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:02:07,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7520 transitions. [2022-07-13 22:02:07,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 250.66666666666666) internal successors, (7520), 30 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:07,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 358.0) internal successors, (11098), 31 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:07,839 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 358.0) internal successors, (11098), 31 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:07,839 INFO L186 Difference]: Start difference. First operand has 413 places, 396 transitions, 1522 flow. Second operand 30 states and 7520 transitions. [2022-07-13 22:02:07,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 533 transitions, 2621 flow [2022-07-13 22:02:07,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 533 transitions, 2555 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-07-13 22:02:07,862 INFO L242 Difference]: Finished difference. Result has 440 places, 406 transitions, 1715 flow [2022-07-13 22:02:07,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1715, PETRI_PLACES=440, PETRI_TRANSITIONS=406} [2022-07-13 22:02:07,863 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 115 predicate places. [2022-07-13 22:02:07,864 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 406 transitions, 1715 flow [2022-07-13 22:02:07,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 246.11111111111111) internal successors, (4430), 18 states have internal predecessors, (4430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:07,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:02:07,865 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:02:07,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:02:08,081 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,SelfDestructingSolverStorable6 [2022-07-13 22:02:08,082 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)] === [2022-07-13 22:02:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:02:08,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1532582343, now seen corresponding path program 2 times [2022-07-13 22:02:08,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:02:08,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570504585] [2022-07-13 22:02:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:02:08,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:02:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:02:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:02:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570504585] [2022-07-13 22:02:08,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570504585] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340531880] [2022-07-13 22:02:08,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:02:08,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:02:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:02:08,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:02:08,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:02:08,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:02:08,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:02:08,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 22:02:08,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:02:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:02:08,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:02:08,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340531880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:02:08,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:02:08,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2022-07-13 22:02:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794186753] [2022-07-13 22:02:08,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:02:08,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:02:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:02:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:02:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:02:08,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 358 [2022-07-13 22:02:08,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 406 transitions, 1715 flow. Second operand has 10 states, 10 states have (on average 272.6) internal successors, (2726), 10 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:08,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:02:08,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 358 [2022-07-13 22:02:08,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:02:14,245 INFO L129 PetriNetUnfolder]: 4588/33990 cut-off events. [2022-07-13 22:02:14,245 INFO L130 PetriNetUnfolder]: For 34351/36547 co-relation queries the response was YES. [2022-07-13 22:02:14,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51207 conditions, 33990 events. 4588/33990 cut-off events. For 34351/36547 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 501207 event pairs, 1070 based on Foata normal form. 118/29850 useless extension candidates. Maximal degree in co-relation 51158. Up to 2646 conditions per place. [2022-07-13 22:02:14,653 INFO L132 encePairwiseOnDemand]: 345/358 looper letters, 155 selfloop transitions, 42 changer transitions 8/493 dead transitions. [2022-07-13 22:02:14,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 493 transitions, 2717 flow [2022-07-13 22:02:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:02:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:02:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3062 transitions. [2022-07-13 22:02:14,657 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7775520568816658 [2022-07-13 22:02:14,657 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3062 transitions. [2022-07-13 22:02:14,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3062 transitions. [2022-07-13 22:02:14,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:02:14,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3062 transitions. [2022-07-13 22:02:14,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 278.3636363636364) internal successors, (3062), 11 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:14,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:14,667 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:14,667 INFO L186 Difference]: Start difference. First operand has 440 places, 406 transitions, 1715 flow. Second operand 11 states and 3062 transitions. [2022-07-13 22:02:14,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 493 transitions, 2717 flow [2022-07-13 22:02:14,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 493 transitions, 2604 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-07-13 22:02:14,719 INFO L242 Difference]: Finished difference. Result has 442 places, 430 transitions, 2090 flow [2022-07-13 22:02:14,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2090, PETRI_PLACES=442, PETRI_TRANSITIONS=430} [2022-07-13 22:02:14,722 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 117 predicate places. [2022-07-13 22:02:14,722 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 430 transitions, 2090 flow [2022-07-13 22:02:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 272.6) internal successors, (2726), 10 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:14,722 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:02:14,723 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:02:14,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:02:14,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:02:14,941 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)] === [2022-07-13 22:02:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:02:14,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1171108207, now seen corresponding path program 3 times [2022-07-13 22:02:14,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:02:14,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889292700] [2022-07-13 22:02:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:02:14,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:02:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:02:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:02:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889292700] [2022-07-13 22:02:15,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889292700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620125367] [2022-07-13 22:02:15,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:02:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:02:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:02:15,192 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) [2022-07-13 22:02:15,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:02:15,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 22:02:15,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:02:15,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 22:02:15,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:02:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:02:15,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:02:15,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620125367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:02:15,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:02:15,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2022-07-13 22:02:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086518484] [2022-07-13 22:02:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:02:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:02:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:02:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:02:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:02:15,482 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 358 [2022-07-13 22:02:15,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 430 transitions, 2090 flow. Second operand has 10 states, 10 states have (on average 272.6) internal successors, (2726), 10 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:15,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:02:15,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 358 [2022-07-13 22:02:15,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:02:21,068 INFO L129 PetriNetUnfolder]: 4914/36468 cut-off events. [2022-07-13 22:02:21,069 INFO L130 PetriNetUnfolder]: For 53839/57184 co-relation queries the response was YES. [2022-07-13 22:02:21,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58571 conditions, 36468 events. 4914/36468 cut-off events. For 53839/57184 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 543135 event pairs, 1113 based on Foata normal form. 171/31940 useless extension candidates. Maximal degree in co-relation 58514. Up to 3204 conditions per place. [2022-07-13 22:02:21,612 INFO L132 encePairwiseOnDemand]: 345/358 looper letters, 166 selfloop transitions, 51 changer transitions 8/513 dead transitions. [2022-07-13 22:02:21,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 513 transitions, 3164 flow [2022-07-13 22:02:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:02:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:02:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3061 transitions. [2022-07-13 22:02:21,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7772981208735399 [2022-07-13 22:02:21,632 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3061 transitions. [2022-07-13 22:02:21,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3061 transitions. [2022-07-13 22:02:21,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:02:21,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3061 transitions. [2022-07-13 22:02:21,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 278.27272727272725) internal successors, (3061), 11 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:21,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:21,639 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:21,639 INFO L186 Difference]: Start difference. First operand has 442 places, 430 transitions, 2090 flow. Second operand 11 states and 3061 transitions. [2022-07-13 22:02:21,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 513 transitions, 3164 flow [2022-07-13 22:02:21,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 513 transitions, 3049 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-07-13 22:02:21,742 INFO L242 Difference]: Finished difference. Result has 448 places, 456 transitions, 2554 flow [2022-07-13 22:02:21,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2554, PETRI_PLACES=448, PETRI_TRANSITIONS=456} [2022-07-13 22:02:21,743 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 123 predicate places. [2022-07-13 22:02:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 456 transitions, 2554 flow [2022-07-13 22:02:21,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 272.6) internal successors, (2726), 10 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:21,744 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:02:21,744 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:02:21,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:02:21,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:02:21,961 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)] === [2022-07-13 22:02:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:02:21,962 INFO L85 PathProgramCache]: Analyzing trace with hash -670238449, now seen corresponding path program 4 times [2022-07-13 22:02:21,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:02:21,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43799457] [2022-07-13 22:02:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:02:21,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:02:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:02:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:02:22,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43799457] [2022-07-13 22:02:22,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43799457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:22,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90236331] [2022-07-13 22:02:22,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:02:22,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:02:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:02:22,214 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) [2022-07-13 22:02:22,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:02:22,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:02:22,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:02:22,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 22:02:22,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:02:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:22,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:02:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:23,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90236331] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:23,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:02:23,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-07-13 22:02:23,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671788964] [2022-07-13 22:02:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:02:23,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 22:02:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:02:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 22:02:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 22:02:23,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 358 [2022-07-13 22:02:23,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 456 transitions, 2554 flow. Second operand has 18 states, 18 states have (on average 246.11111111111111) internal successors, (4430), 18 states have internal predecessors, (4430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:23,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:02:23,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 358 [2022-07-13 22:02:23,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:02:30,270 INFO L129 PetriNetUnfolder]: 4742/37746 cut-off events. [2022-07-13 22:02:30,271 INFO L130 PetriNetUnfolder]: For 66491/69757 co-relation queries the response was YES. [2022-07-13 22:02:30,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60345 conditions, 37746 events. 4742/37746 cut-off events. For 66491/69757 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 564933 event pairs, 2511 based on Foata normal form. 114/33311 useless extension candidates. Maximal degree in co-relation 60285. Up to 2073 conditions per place. [2022-07-13 22:02:30,819 INFO L132 encePairwiseOnDemand]: 328/358 looper letters, 275 selfloop transitions, 67 changer transitions 8/603 dead transitions. [2022-07-13 22:02:30,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 603 transitions, 4125 flow [2022-07-13 22:02:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:02:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:02:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7521 transitions. [2022-07-13 22:02:30,825 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7002793296089386 [2022-07-13 22:02:30,825 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7521 transitions. [2022-07-13 22:02:30,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7521 transitions. [2022-07-13 22:02:30,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:02:30,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7521 transitions. [2022-07-13 22:02:30,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 250.7) internal successors, (7521), 30 states have internal predecessors, (7521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:30,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 358.0) internal successors, (11098), 31 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:30,840 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 358.0) internal successors, (11098), 31 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:30,840 INFO L186 Difference]: Start difference. First operand has 448 places, 456 transitions, 2554 flow. Second operand 30 states and 7521 transitions. [2022-07-13 22:02:30,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 603 transitions, 4125 flow [2022-07-13 22:02:30,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 603 transitions, 3953 flow, removed 86 selfloop flow, removed 6 redundant places. [2022-07-13 22:02:30,975 INFO L242 Difference]: Finished difference. Result has 470 places, 467 transitions, 2840 flow [2022-07-13 22:02:30,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2840, PETRI_PLACES=470, PETRI_TRANSITIONS=467} [2022-07-13 22:02:30,977 INFO L279 CegarLoopForPetriNet]: 325 programPoint places, 145 predicate places. [2022-07-13 22:02:30,977 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 467 transitions, 2840 flow [2022-07-13 22:02:30,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 246.11111111111111) internal successors, (4430), 18 states have internal predecessors, (4430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:30,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:02:30,977 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:02:30,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 22:02:31,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:02:31,193 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)] === [2022-07-13 22:02:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:02:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash -546337380, now seen corresponding path program 1 times [2022-07-13 22:02:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:02:31,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906581977] [2022-07-13 22:02:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:02:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:02:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:02:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:31,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:02:31,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906581977] [2022-07-13 22:02:31,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906581977] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:31,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589480538] [2022-07-13 22:02:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:02:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:02:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:02:31,312 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) [2022-07-13 22:02:31,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:02:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:02:31,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 22:02:31,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:02:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:31,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:02:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:02:31,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589480538] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:02:31,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:02:31,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-07-13 22:02:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509893903] [2022-07-13 22:02:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:02:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:02:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:02:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:02:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:02:31,891 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 358 [2022-07-13 22:02:31,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 467 transitions, 2840 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:02:31,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:02:31,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 358 [2022-07-13 22:02:31,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand