./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:03:23,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:03:23,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:03:24,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:03:24,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:03:24,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:03:24,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:03:24,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:03:24,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:03:24,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:03:24,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:03:24,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:03:24,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:03:24,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:03:24,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:03:24,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:03:24,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:03:24,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:03:24,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:03:24,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:03:24,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:03:24,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:03:24,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:03:24,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:03:24,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:03:24,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:03:24,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:03:24,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:03:24,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:03:24,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:03:24,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:03:24,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:03:24,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:03:24,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:03:24,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:03:24,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:03:24,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:03:24,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:03:24,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:03:24,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:03:24,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:03:24,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:03:24,121 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:03:24,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:03:24,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:03:24,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:03:24,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:03:24,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:03:24,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:03:24,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:03:24,125 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:03:24,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:03:24,126 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:03:24,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:03:24,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:03:24,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:03:24,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:03:24,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:03:24,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:03:24,127 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:03:24,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:03:24,128 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:03:24,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:03:24,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:03:24,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:03:24,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:03:24,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:03:24,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:03:24,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:03:24,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:03:24,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:03:24,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:03:24,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:03:24,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:03:24,130 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:03:24,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:03:24,130 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:03:24,130 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:03:24,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:03:24,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:03:24,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:03:24,435 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:03:24,436 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:03:24,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-08-31 01:03:25,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:03:25,793 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:03:25,793 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-08-31 01:03:25,799 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9f4fe78f/1390a352885944109f3d3ec4dbd8a5e4/FLAGb4f47372f [2023-08-31 01:03:25,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9f4fe78f/1390a352885944109f3d3ec4dbd8a5e4 [2023-08-31 01:03:25,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:03:25,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:03:25,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:03:25,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:03:25,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:03:25,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:03:25" (1/1) ... [2023-08-31 01:03:25,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1008337c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:25, skipping insertion in model container [2023-08-31 01:03:25,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:03:25" (1/1) ... [2023-08-31 01:03:25,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:03:25,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:03:26,039 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-08-31 01:03:26,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:03:26,065 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:03:26,100 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-08-31 01:03:26,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:03:26,124 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:03:26,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26 WrapperNode [2023-08-31 01:03:26,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:03:26,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:03:26,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:03:26,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:03:26,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,181 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 178 [2023-08-31 01:03:26,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:03:26,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:03:26,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:03:26,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:03:26,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:03:26,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:03:26,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:03:26,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:03:26,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (1/1) ... [2023-08-31 01:03:26,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:03:26,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:26,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 01:03:26,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 01:03:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:03:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:03:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:03:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:03:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:03:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:03:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:03:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:03:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:03:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:03:26,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:03:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:03:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:03:26,294 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:03:26,429 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:03:26,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:03:26,729 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:03:26,735 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:03:26,736 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-31 01:03:26,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:03:26 BoogieIcfgContainer [2023-08-31 01:03:26,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:03:26,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:03:26,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:03:26,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:03:26,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:03:25" (1/3) ... [2023-08-31 01:03:26,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ab117d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:03:26, skipping insertion in model container [2023-08-31 01:03:26,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:26" (2/3) ... [2023-08-31 01:03:26,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ab117d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:03:26, skipping insertion in model container [2023-08-31 01:03:26,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:03:26" (3/3) ... [2023-08-31 01:03:26,753 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-08-31 01:03:26,759 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:03:26,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:03:26,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:03:26,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:03:26,842 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 01:03:26,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 199 transitions, 414 flow [2023-08-31 01:03:26,948 INFO L130 PetriNetUnfolder]: 19/197 cut-off events. [2023-08-31 01:03:26,949 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:03:26,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 19/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-08-31 01:03:26,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 199 transitions, 414 flow [2023-08-31 01:03:26,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 189 transitions, 390 flow [2023-08-31 01:03:26,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:03:26,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 189 transitions, 390 flow [2023-08-31 01:03:26,980 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 189 transitions, 390 flow [2023-08-31 01:03:26,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 189 transitions, 390 flow [2023-08-31 01:03:27,024 INFO L130 PetriNetUnfolder]: 19/189 cut-off events. [2023-08-31 01:03:27,024 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:03:27,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 189 events. 19/189 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-08-31 01:03:27,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 3332 [2023-08-31 01:03:31,543 INFO L134 LiptonReduction]: Checked pairs total: 3976 [2023-08-31 01:03:31,543 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-31 01:03:31,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:03:31,558 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73dd244b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:03:31,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 01:03:31,572 INFO L130 PetriNetUnfolder]: 6/24 cut-off events. [2023-08-31 01:03:31,573 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:03:31,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:31,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:31,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:31,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1174210109, now seen corresponding path program 1 times [2023-08-31 01:03:31,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:31,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964493474] [2023-08-31 01:03:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:31,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:31,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964493474] [2023-08-31 01:03:31,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964493474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:31,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:31,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:03:31,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18814453] [2023-08-31 01:03:31,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:31,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:03:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:31,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:03:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:03:31,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 410 [2023-08-31 01:03:31,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:31,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:31,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 410 [2023-08-31 01:03:31,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:32,003 INFO L130 PetriNetUnfolder]: 91/155 cut-off events. [2023-08-31 01:03:32,006 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-31 01:03:32,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 155 events. 91/155 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 377 event pairs, 51 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 275. Up to 151 conditions per place. [2023-08-31 01:03:32,008 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-31 01:03:32,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 118 flow [2023-08-31 01:03:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:03:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:03:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-08-31 01:03:32,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44959349593495934 [2023-08-31 01:03:32,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-08-31 01:03:32,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-08-31 01:03:32,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:32,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-08-31 01:03:32,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,047 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 3 states and 553 transitions. [2023-08-31 01:03:32,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 118 flow [2023-08-31 01:03:32,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:03:32,051 INFO L231 Difference]: Finished difference. Result has 25 places, 27 transitions, 76 flow [2023-08-31 01:03:32,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2023-08-31 01:03:32,056 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-31 01:03:32,057 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 76 flow [2023-08-31 01:03:32,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:32,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:03:32,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:32,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 505710322, now seen corresponding path program 1 times [2023-08-31 01:03:32,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:32,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802927172] [2023-08-31 01:03:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:32,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:32,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802927172] [2023-08-31 01:03:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802927172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072752491] [2023-08-31 01:03:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:32,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:32,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:32,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:32,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:03:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:32,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 01:03:32,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:32,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:32,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072752491] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:03:32,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:03:32,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-31 01:03:32,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852078004] [2023-08-31 01:03:32,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:03:32,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:03:32,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:32,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:03:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:03:32,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-08-31 01:03:32,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 173.875) internal successors, (1391), 8 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:32,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-08-31 01:03:32,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:32,633 INFO L130 PetriNetUnfolder]: 91/161 cut-off events. [2023-08-31 01:03:32,633 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:03:32,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 161 events. 91/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 378 event pairs, 51 based on Foata normal form. 3/123 useless extension candidates. Maximal degree in co-relation 315. Up to 151 conditions per place. [2023-08-31 01:03:32,634 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2023-08-31 01:03:32,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 164 flow [2023-08-31 01:03:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:03:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:03:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1064 transitions. [2023-08-31 01:03:32,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432520325203252 [2023-08-31 01:03:32,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1064 transitions. [2023-08-31 01:03:32,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1064 transitions. [2023-08-31 01:03:32,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:32,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1064 transitions. [2023-08-31 01:03:32,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,643 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 76 flow. Second operand 6 states and 1064 transitions. [2023-08-31 01:03:32,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 164 flow [2023-08-31 01:03:32,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:03:32,646 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 138 flow [2023-08-31 01:03:32,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-08-31 01:03:32,647 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-31 01:03:32,647 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 138 flow [2023-08-31 01:03:32,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 173.875) internal successors, (1391), 8 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:32,648 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:32,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 01:03:32,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:32,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:32,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1388696397, now seen corresponding path program 2 times [2023-08-31 01:03:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949599431] [2023-08-31 01:03:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:03:33,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949599431] [2023-08-31 01:03:33,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949599431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555701715] [2023-08-31 01:03:33,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:03:33,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:33,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:33,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:03:33,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:03:33,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:33,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 01:03:33,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-31 01:03:33,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555701715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:33,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-08-31 01:03:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028351912] [2023-08-31 01:03:33,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:03:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:03:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:03:33,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 410 [2023-08-31 01:03:33,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:33,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 410 [2023-08-31 01:03:33,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:33,310 INFO L130 PetriNetUnfolder]: 173/320 cut-off events. [2023-08-31 01:03:33,310 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 01:03:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 320 events. 173/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1130 event pairs, 51 based on Foata normal form. 4/245 useless extension candidates. Maximal degree in co-relation 617. Up to 147 conditions per place. [2023-08-31 01:03:33,315 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 51 selfloop transitions, 5 changer transitions 2/59 dead transitions. [2023-08-31 01:03:33,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 312 flow [2023-08-31 01:03:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:03:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:03:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 936 transitions. [2023-08-31 01:03:33,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45658536585365855 [2023-08-31 01:03:33,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 936 transitions. [2023-08-31 01:03:33,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 936 transitions. [2023-08-31 01:03:33,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:33,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 936 transitions. [2023-08-31 01:03:33,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,324 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 138 flow. Second operand 5 states and 936 transitions. [2023-08-31 01:03:33,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 312 flow [2023-08-31 01:03:33,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 296 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 01:03:33,327 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 146 flow [2023-08-31 01:03:33,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-08-31 01:03:33,329 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-31 01:03:33,329 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 146 flow [2023-08-31 01:03:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:33,330 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:33,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 01:03:33,537 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,SelfDestructingSolverStorable2 [2023-08-31 01:03:33,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:33,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -860076919, now seen corresponding path program 3 times [2023-08-31 01:03:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968440647] [2023-08-31 01:03:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:03:33,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968440647] [2023-08-31 01:03:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968440647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276373403] [2023-08-31 01:03:33,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:03:33,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:33,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:33,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:33,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:03:33,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:03:33,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:33,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 01:03:33,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-31 01:03:33,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:33,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276373403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:33,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:33,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-08-31 01:03:33,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131201432] [2023-08-31 01:03:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:03:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:03:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:03:33,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 410 [2023-08-31 01:03:33,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:33,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 410 [2023-08-31 01:03:33,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:33,898 INFO L130 PetriNetUnfolder]: 211/384 cut-off events. [2023-08-31 01:03:33,899 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2023-08-31 01:03:33,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 384 events. 211/384 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1371 event pairs, 50 based on Foata normal form. 4/325 useless extension candidates. Maximal degree in co-relation 836. Up to 271 conditions per place. [2023-08-31 01:03:33,900 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 49 selfloop transitions, 4 changer transitions 3/57 dead transitions. [2023-08-31 01:03:33,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 318 flow [2023-08-31 01:03:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:03:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:03:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 755 transitions. [2023-08-31 01:03:33,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2023-08-31 01:03:33,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 755 transitions. [2023-08-31 01:03:33,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 755 transitions. [2023-08-31 01:03:33,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:33,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 755 transitions. [2023-08-31 01:03:33,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,907 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,907 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 146 flow. Second operand 4 states and 755 transitions. [2023-08-31 01:03:33,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 318 flow [2023-08-31 01:03:33,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:03:33,909 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 180 flow [2023-08-31 01:03:33,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-31 01:03:33,910 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-31 01:03:33,910 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 180 flow [2023-08-31 01:03:33,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:33,911 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:33,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:34,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:34,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:34,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:34,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2094169333, now seen corresponding path program 4 times [2023-08-31 01:03:34,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:34,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590577821] [2023-08-31 01:03:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:03:34,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590577821] [2023-08-31 01:03:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590577821] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74784110] [2023-08-31 01:03:34,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:03:34,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:34,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:34,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:34,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:03:34,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:03:34,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:34,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 01:03:34,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-31 01:03:34,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:34,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74784110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:34,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:34,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-08-31 01:03:34,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944496953] [2023-08-31 01:03:34,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:34,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:03:34,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:34,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:03:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:03:34,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 410 [2023-08-31 01:03:34,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:34,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 410 [2023-08-31 01:03:34,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:34,454 INFO L130 PetriNetUnfolder]: 201/364 cut-off events. [2023-08-31 01:03:34,454 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-31 01:03:34,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 364 events. 201/364 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1272 event pairs, 53 based on Foata normal form. 4/309 useless extension candidates. Maximal degree in co-relation 861. Up to 163 conditions per place. [2023-08-31 01:03:34,456 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 52 selfloop transitions, 7 changer transitions 3/63 dead transitions. [2023-08-31 01:03:34,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 371 flow [2023-08-31 01:03:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:03:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:03:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 759 transitions. [2023-08-31 01:03:34,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628048780487805 [2023-08-31 01:03:34,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 759 transitions. [2023-08-31 01:03:34,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 759 transitions. [2023-08-31 01:03:34,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:34,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 759 transitions. [2023-08-31 01:03:34,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,462 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 180 flow. Second operand 4 states and 759 transitions. [2023-08-31 01:03:34,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 371 flow [2023-08-31 01:03:34,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 367 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-31 01:03:34,465 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 205 flow [2023-08-31 01:03:34,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-31 01:03:34,465 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-08-31 01:03:34,466 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 205 flow [2023-08-31 01:03:34,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:34,466 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:34,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-31 01:03:34,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:34,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:34,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1210593385, now seen corresponding path program 1 times [2023-08-31 01:03:34,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:34,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62818463] [2023-08-31 01:03:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:34,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:03:34,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:34,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62818463] [2023-08-31 01:03:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62818463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957893201] [2023-08-31 01:03:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:34,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:34,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:34,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:34,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:03:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:34,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 01:03:34,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:03:34,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:03:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957893201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:03:35,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:03:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-31 01:03:35,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457507423] [2023-08-31 01:03:35,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:03:35,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 01:03:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 01:03:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:03:35,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-08-31 01:03:35,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 205 flow. Second operand has 17 states, 17 states have (on average 173.0) internal successors, (2941), 17 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:35,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:35,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-08-31 01:03:35,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:35,269 INFO L130 PetriNetUnfolder]: 198/356 cut-off events. [2023-08-31 01:03:35,269 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-31 01:03:35,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 356 events. 198/356 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1206 event pairs, 114 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 861. Up to 332 conditions per place. [2023-08-31 01:03:35,271 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 29 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2023-08-31 01:03:35,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 299 flow [2023-08-31 01:03:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:03:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:03:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1233 transitions. [2023-08-31 01:03:35,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42961672473867596 [2023-08-31 01:03:35,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1233 transitions. [2023-08-31 01:03:35,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1233 transitions. [2023-08-31 01:03:35,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:35,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1233 transitions. [2023-08-31 01:03:35,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:35,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:35,279 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:35,279 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 205 flow. Second operand 7 states and 1233 transitions. [2023-08-31 01:03:35,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 299 flow [2023-08-31 01:03:35,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 287 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-31 01:03:35,281 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 239 flow [2023-08-31 01:03:35,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-31 01:03:35,282 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2023-08-31 01:03:35,282 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 239 flow [2023-08-31 01:03:35,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 173.0) internal successors, (2941), 17 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:35,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:35,283 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:35,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:35,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:35,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:35,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 269385230, now seen corresponding path program 2 times [2023-08-31 01:03:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:35,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359045061] [2023-08-31 01:03:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:35,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:36,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359045061] [2023-08-31 01:03:36,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359045061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:36,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:36,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:03:36,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512988627] [2023-08-31 01:03:36,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:36,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:03:36,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:03:36,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 239 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:36,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:03:36,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:36,803 INFO L130 PetriNetUnfolder]: 269/495 cut-off events. [2023-08-31 01:03:36,803 INFO L131 PetriNetUnfolder]: For 201/201 co-relation queries the response was YES. [2023-08-31 01:03:36,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 495 events. 269/495 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1946 event pairs, 33 based on Foata normal form. 13/423 useless extension candidates. Maximal degree in co-relation 1143. Up to 116 conditions per place. [2023-08-31 01:03:36,806 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 88 selfloop transitions, 28 changer transitions 10/127 dead transitions. [2023-08-31 01:03:36,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 127 transitions, 725 flow [2023-08-31 01:03:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:03:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:03:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2127 transitions. [2023-08-31 01:03:36,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39906191369606003 [2023-08-31 01:03:36,811 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2127 transitions. [2023-08-31 01:03:36,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2127 transitions. [2023-08-31 01:03:36,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:36,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2127 transitions. [2023-08-31 01:03:36,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 163.6153846153846) internal successors, (2127), 13 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,821 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,821 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 239 flow. Second operand 13 states and 2127 transitions. [2023-08-31 01:03:36,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 127 transitions, 725 flow [2023-08-31 01:03:36,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 127 transitions, 701 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 01:03:36,825 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 423 flow [2023-08-31 01:03:36,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=423, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-08-31 01:03:36,826 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-08-31 01:03:36,827 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 423 flow [2023-08-31 01:03:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:36,829 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 01:03:36,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:36,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1843151562, now seen corresponding path program 3 times [2023-08-31 01:03:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:36,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166173977] [2023-08-31 01:03:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:03:38,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:38,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166173977] [2023-08-31 01:03:38,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166173977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:38,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509139298] [2023-08-31 01:03:38,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:03:38,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:38,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:38,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:38,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 01:03:38,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:03:38,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:38,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-31 01:03:38,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:38,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509139298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:38,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:38,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-08-31 01:03:38,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147563690] [2023-08-31 01:03:38,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:38,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:38,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-08-31 01:03:38,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:03:38,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 423 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:38,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:38,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:03:38,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:39,240 INFO L130 PetriNetUnfolder]: 280/516 cut-off events. [2023-08-31 01:03:39,240 INFO L131 PetriNetUnfolder]: For 646/648 co-relation queries the response was YES. [2023-08-31 01:03:39,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 516 events. 280/516 cut-off events. For 646/648 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2033 event pairs, 45 based on Foata normal form. 9/525 useless extension candidates. Maximal degree in co-relation 1691. Up to 157 conditions per place. [2023-08-31 01:03:39,245 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 73 selfloop transitions, 24 changer transitions 9/107 dead transitions. [2023-08-31 01:03:39,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 107 transitions, 793 flow [2023-08-31 01:03:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:03:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:03:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1473 transitions. [2023-08-31 01:03:39,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991869918699187 [2023-08-31 01:03:39,249 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1473 transitions. [2023-08-31 01:03:39,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1473 transitions. [2023-08-31 01:03:39,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:39,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1473 transitions. [2023-08-31 01:03:39,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.66666666666666) internal successors, (1473), 9 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:39,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:39,259 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:39,259 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 423 flow. Second operand 9 states and 1473 transitions. [2023-08-31 01:03:39,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 107 transitions, 793 flow [2023-08-31 01:03:39,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 782 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-31 01:03:39,266 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 525 flow [2023-08-31 01:03:39,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-31 01:03:39,268 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-08-31 01:03:39,268 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 525 flow [2023-08-31 01:03:39,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:39,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:39,270 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:39,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:39,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:39,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:39,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1894417440, now seen corresponding path program 4 times [2023-08-31 01:03:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070512082] [2023-08-31 01:03:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:03:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070512082] [2023-08-31 01:03:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070512082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150543953] [2023-08-31 01:03:40,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:03:40,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:40,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:40,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:40,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 01:03:40,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:03:40,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:40,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-31 01:03:40,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:40,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:40,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150543953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:40,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:40,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 22 [2023-08-31 01:03:40,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097698790] [2023-08-31 01:03:40,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:40,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:03:40,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:03:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-08-31 01:03:41,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:03:41,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:41,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:41,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:03:41,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:41,489 INFO L130 PetriNetUnfolder]: 281/529 cut-off events. [2023-08-31 01:03:41,490 INFO L131 PetriNetUnfolder]: For 1201/1203 co-relation queries the response was YES. [2023-08-31 01:03:41,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 529 events. 281/529 cut-off events. For 1201/1203 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2180 event pairs, 65 based on Foata normal form. 9/538 useless extension candidates. Maximal degree in co-relation 2036. Up to 185 conditions per place. [2023-08-31 01:03:41,494 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 80 selfloop transitions, 23 changer transitions 6/110 dead transitions. [2023-08-31 01:03:41,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 898 flow [2023-08-31 01:03:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:03:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:03:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1348 transitions. [2023-08-31 01:03:41,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41097560975609754 [2023-08-31 01:03:41,498 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1348 transitions. [2023-08-31 01:03:41,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1348 transitions. [2023-08-31 01:03:41,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:41,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1348 transitions. [2023-08-31 01:03:41,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 168.5) internal successors, (1348), 8 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:41,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:41,519 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:41,519 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 525 flow. Second operand 8 states and 1348 transitions. [2023-08-31 01:03:41,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 898 flow [2023-08-31 01:03:41,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 854 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-31 01:03:41,542 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 577 flow [2023-08-31 01:03:41,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-31 01:03:41,543 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2023-08-31 01:03:41,544 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 577 flow [2023-08-31 01:03:41,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:41,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:41,545 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:41,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:41,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:41,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:41,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1075580716, now seen corresponding path program 5 times [2023-08-31 01:03:41,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:41,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824599595] [2023-08-31 01:03:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:41,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:43,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:43,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824599595] [2023-08-31 01:03:43,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824599595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:43,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147457705] [2023-08-31 01:03:43,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:03:43,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:43,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:43,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:43,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 01:03:43,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-31 01:03:43,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:43,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-31 01:03:43,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:43,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:43,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147457705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:43,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 29 [2023-08-31 01:03:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000997228] [2023-08-31 01:03:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:43,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-08-31 01:03:44,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:03:44,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 577 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:44,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:03:44,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:44,563 INFO L130 PetriNetUnfolder]: 277/513 cut-off events. [2023-08-31 01:03:44,563 INFO L131 PetriNetUnfolder]: For 1624/1626 co-relation queries the response was YES. [2023-08-31 01:03:44,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 513 events. 277/513 cut-off events. For 1624/1626 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2024 event pairs, 47 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 2086. Up to 157 conditions per place. [2023-08-31 01:03:44,568 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 74 selfloop transitions, 24 changer transitions 10/109 dead transitions. [2023-08-31 01:03:44,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 941 flow [2023-08-31 01:03:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:03:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:03:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1471 transitions. [2023-08-31 01:03:44,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986449864498645 [2023-08-31 01:03:44,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1471 transitions. [2023-08-31 01:03:44,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1471 transitions. [2023-08-31 01:03:44,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:44,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1471 transitions. [2023-08-31 01:03:44,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.44444444444446) internal successors, (1471), 9 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,578 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,578 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 577 flow. Second operand 9 states and 1471 transitions. [2023-08-31 01:03:44,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 941 flow [2023-08-31 01:03:44,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 109 transitions, 887 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-31 01:03:44,587 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 563 flow [2023-08-31 01:03:44,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=563, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-08-31 01:03:44,588 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2023-08-31 01:03:44,588 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 563 flow [2023-08-31 01:03:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:44,589 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:44,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:44,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-31 01:03:44,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:44,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1130882794, now seen corresponding path program 6 times [2023-08-31 01:03:44,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:44,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837009836] [2023-08-31 01:03:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:44,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:45,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837009836] [2023-08-31 01:03:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837009836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:45,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:03:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423336808] [2023-08-31 01:03:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:45,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:03:45,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:03:45,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 563 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:45,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:45,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:03:45,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:45,904 INFO L130 PetriNetUnfolder]: 278/522 cut-off events. [2023-08-31 01:03:45,904 INFO L131 PetriNetUnfolder]: For 1470/1472 co-relation queries the response was YES. [2023-08-31 01:03:45,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 522 events. 278/522 cut-off events. For 1470/1472 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2129 event pairs, 31 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 2097. Up to 144 conditions per place. [2023-08-31 01:03:45,908 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 89 selfloop transitions, 31 changer transitions 9/130 dead transitions. [2023-08-31 01:03:45,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 130 transitions, 1073 flow [2023-08-31 01:03:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:03:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:03:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2276 transitions. [2023-08-31 01:03:45,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3965156794425087 [2023-08-31 01:03:45,912 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2276 transitions. [2023-08-31 01:03:45,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2276 transitions. [2023-08-31 01:03:45,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:45,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2276 transitions. [2023-08-31 01:03:45,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.57142857142858) internal successors, (2276), 14 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:45,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:45,922 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:45,922 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 563 flow. Second operand 14 states and 2276 transitions. [2023-08-31 01:03:45,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 130 transitions, 1073 flow [2023-08-31 01:03:45,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 1028 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-31 01:03:45,928 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 586 flow [2023-08-31 01:03:45,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2023-08-31 01:03:45,929 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2023-08-31 01:03:45,929 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 586 flow [2023-08-31 01:03:45,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:45,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:45,930 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:45,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:03:45,935 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:45,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 583298390, now seen corresponding path program 7 times [2023-08-31 01:03:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:45,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983616328] [2023-08-31 01:03:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:45,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:46,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:46,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983616328] [2023-08-31 01:03:46,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983616328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:46,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:46,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:03:46,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930929807] [2023-08-31 01:03:46,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:46,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:46,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:46,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:46,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:03:46,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 410 [2023-08-31 01:03:46,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 586 flow. Second operand has 11 states, 11 states have (on average 158.72727272727272) internal successors, (1746), 11 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:46,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:46,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 410 [2023-08-31 01:03:46,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:47,235 INFO L130 PetriNetUnfolder]: 275/509 cut-off events. [2023-08-31 01:03:47,236 INFO L131 PetriNetUnfolder]: For 1531/1533 co-relation queries the response was YES. [2023-08-31 01:03:47,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2136 conditions, 509 events. 275/509 cut-off events. For 1531/1533 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2012 event pairs, 31 based on Foata normal form. 3/512 useless extension candidates. Maximal degree in co-relation 2093. Up to 144 conditions per place. [2023-08-31 01:03:47,255 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 83 selfloop transitions, 30 changer transitions 7/121 dead transitions. [2023-08-31 01:03:47,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 1042 flow [2023-08-31 01:03:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:03:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:03:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1981 transitions. [2023-08-31 01:03:47,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40264227642276423 [2023-08-31 01:03:47,260 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1981 transitions. [2023-08-31 01:03:47,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1981 transitions. [2023-08-31 01:03:47,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:47,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1981 transitions. [2023-08-31 01:03:47,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 165.08333333333334) internal successors, (1981), 12 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:47,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:47,272 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:47,272 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 586 flow. Second operand 12 states and 1981 transitions. [2023-08-31 01:03:47,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 1042 flow [2023-08-31 01:03:47,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 946 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-08-31 01:03:47,280 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 559 flow [2023-08-31 01:03:47,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2023-08-31 01:03:47,281 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-08-31 01:03:47,281 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 559 flow [2023-08-31 01:03:47,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 158.72727272727272) internal successors, (1746), 11 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:47,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:47,282 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:47,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:03:47,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:47,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1827664836, now seen corresponding path program 8 times [2023-08-31 01:03:47,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:47,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751704381] [2023-08-31 01:03:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:47,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:03:48,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751704381] [2023-08-31 01:03:48,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751704381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260331401] [2023-08-31 01:03:48,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:03:48,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:48,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:48,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:48,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 01:03:48,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:03:48,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:48,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-31 01:03:48,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:48,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260331401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:48,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-08-31 01:03:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398910548] [2023-08-31 01:03:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:48,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:48,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-08-31 01:03:49,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:03:49,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 559 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:49,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:49,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:03:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:49,573 INFO L130 PetriNetUnfolder]: 321/579 cut-off events. [2023-08-31 01:03:49,574 INFO L131 PetriNetUnfolder]: For 1457/1457 co-relation queries the response was YES. [2023-08-31 01:03:49,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 579 events. 321/579 cut-off events. For 1457/1457 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2339 event pairs, 44 based on Foata normal form. 7/585 useless extension candidates. Maximal degree in co-relation 2277. Up to 182 conditions per place. [2023-08-31 01:03:49,578 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 82 selfloop transitions, 27 changer transitions 9/119 dead transitions. [2023-08-31 01:03:49,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 1040 flow [2023-08-31 01:03:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:03:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:03:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1475 transitions. [2023-08-31 01:03:49,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997289972899729 [2023-08-31 01:03:49,585 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1475 transitions. [2023-08-31 01:03:49,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1475 transitions. [2023-08-31 01:03:49,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:49,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1475 transitions. [2023-08-31 01:03:49,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.88888888888889) internal successors, (1475), 9 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:49,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:49,602 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:49,602 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 559 flow. Second operand 9 states and 1475 transitions. [2023-08-31 01:03:49,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 1040 flow [2023-08-31 01:03:49,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 119 transitions, 958 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-08-31 01:03:49,610 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 689 flow [2023-08-31 01:03:49,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=689, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-08-31 01:03:49,611 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-08-31 01:03:49,612 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 689 flow [2023-08-31 01:03:49,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:49,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:49,612 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:49,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:49,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-31 01:03:49,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:49,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:49,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1146369520, now seen corresponding path program 9 times [2023-08-31 01:03:49,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:49,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039340321] [2023-08-31 01:03:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:50,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:50,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039340321] [2023-08-31 01:03:50,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039340321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:50,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:50,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:03:50,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571591199] [2023-08-31 01:03:50,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:50,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:50,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:03:50,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:03:50,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:50,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:50,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:03:50,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:50,901 INFO L130 PetriNetUnfolder]: 328/606 cut-off events. [2023-08-31 01:03:50,902 INFO L131 PetriNetUnfolder]: For 2566/2568 co-relation queries the response was YES. [2023-08-31 01:03:50,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 606 events. 328/606 cut-off events. For 2566/2568 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2561 event pairs, 38 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 2721. Up to 162 conditions per place. [2023-08-31 01:03:50,907 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 106 selfloop transitions, 34 changer transitions 9/150 dead transitions. [2023-08-31 01:03:50,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 150 transitions, 1312 flow [2023-08-31 01:03:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:03:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:03:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2285 transitions. [2023-08-31 01:03:50,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980836236933798 [2023-08-31 01:03:50,911 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2285 transitions. [2023-08-31 01:03:50,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2285 transitions. [2023-08-31 01:03:50,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:50,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2285 transitions. [2023-08-31 01:03:50,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 163.21428571428572) internal successors, (2285), 14 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:50,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:50,923 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:50,923 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 689 flow. Second operand 14 states and 2285 transitions. [2023-08-31 01:03:50,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 150 transitions, 1312 flow [2023-08-31 01:03:50,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1255 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-31 01:03:50,936 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 774 flow [2023-08-31 01:03:50,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=774, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-08-31 01:03:50,937 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-08-31 01:03:50,937 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 774 flow [2023-08-31 01:03:50,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:50,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:50,938 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:50,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 01:03:50,938 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:50,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash 567811664, now seen corresponding path program 10 times [2023-08-31 01:03:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:50,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148657861] [2023-08-31 01:03:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:50,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:51,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148657861] [2023-08-31 01:03:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148657861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:51,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:51,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:03:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434473144] [2023-08-31 01:03:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:51,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:03:51,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:03:51,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 774 flow. Second operand has 11 states, 11 states have (on average 157.72727272727272) internal successors, (1735), 11 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:51,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:51,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:03:51,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:52,150 INFO L130 PetriNetUnfolder]: 329/613 cut-off events. [2023-08-31 01:03:52,150 INFO L131 PetriNetUnfolder]: For 2565/2567 co-relation queries the response was YES. [2023-08-31 01:03:52,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2771 conditions, 613 events. 329/613 cut-off events. For 2565/2567 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2653 event pairs, 44 based on Foata normal form. 1/614 useless extension candidates. Maximal degree in co-relation 2717. Up to 212 conditions per place. [2023-08-31 01:03:52,155 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 87 selfloop transitions, 28 changer transitions 7/123 dead transitions. [2023-08-31 01:03:52,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 1168 flow [2023-08-31 01:03:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:03:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:03:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1480 transitions. [2023-08-31 01:03:52,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2023-08-31 01:03:52,158 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1480 transitions. [2023-08-31 01:03:52,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1480 transitions. [2023-08-31 01:03:52,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:52,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1480 transitions. [2023-08-31 01:03:52,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.44444444444446) internal successors, (1480), 9 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:52,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:52,165 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:52,165 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 774 flow. Second operand 9 states and 1480 transitions. [2023-08-31 01:03:52,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 1168 flow [2023-08-31 01:03:52,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 1123 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-31 01:03:52,177 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 811 flow [2023-08-31 01:03:52,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-08-31 01:03:52,178 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-08-31 01:03:52,178 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 811 flow [2023-08-31 01:03:52,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 157.72727272727272) internal successors, (1735), 11 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:52,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:52,179 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:52,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:03:52,179 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:52,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash -132681324, now seen corresponding path program 11 times [2023-08-31 01:03:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:52,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467018786] [2023-08-31 01:03:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:52,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467018786] [2023-08-31 01:03:52,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467018786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:52,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:03:52,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47367865] [2023-08-31 01:03:52,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:52,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:03:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:03:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:03:53,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:03:53,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 811 flow. Second operand has 11 states, 11 states have (on average 157.72727272727272) internal successors, (1735), 11 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:53,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:53,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:03:53,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:53,410 INFO L130 PetriNetUnfolder]: 327/601 cut-off events. [2023-08-31 01:03:53,411 INFO L131 PetriNetUnfolder]: For 2391/2393 co-relation queries the response was YES. [2023-08-31 01:03:53,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 601 events. 327/601 cut-off events. For 2391/2393 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2543 event pairs, 42 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 2651. Up to 162 conditions per place. [2023-08-31 01:03:53,416 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 103 selfloop transitions, 32 changer transitions 7/143 dead transitions. [2023-08-31 01:03:53,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 1325 flow [2023-08-31 01:03:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:03:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:03:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1976 transitions. [2023-08-31 01:03:53,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4016260162601626 [2023-08-31 01:03:53,420 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1976 transitions. [2023-08-31 01:03:53,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1976 transitions. [2023-08-31 01:03:53,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:53,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1976 transitions. [2023-08-31 01:03:53,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 164.66666666666666) internal successors, (1976), 12 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:53,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:53,433 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:53,433 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 811 flow. Second operand 12 states and 1976 transitions. [2023-08-31 01:03:53,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 1325 flow [2023-08-31 01:03:53,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 1261 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-31 01:03:53,446 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 810 flow [2023-08-31 01:03:53,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=810, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-08-31 01:03:53,448 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-08-31 01:03:53,448 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 810 flow [2023-08-31 01:03:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 157.72727272727272) internal successors, (1735), 11 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:53,449 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:03:53,449 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:53,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1819505128, now seen corresponding path program 12 times [2023-08-31 01:03:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427426541] [2023-08-31 01:03:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:55,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427426541] [2023-08-31 01:03:55,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427426541] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666815332] [2023-08-31 01:03:55,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:03:55,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:55,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:55,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:55,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 01:03:55,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 01:03:55,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:55,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-31 01:03:55,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:55,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:03:55,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:03:55,773 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:03:55,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-31 01:03:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:55,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:55,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666815332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:55,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:55,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2023-08-31 01:03:55,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965285681] [2023-08-31 01:03:55,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:55,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:03:55,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:55,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:03:55,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-08-31 01:03:56,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 410 [2023-08-31 01:03:56,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 810 flow. Second operand has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:56,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:56,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 410 [2023-08-31 01:03:56,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:57,080 INFO L130 PetriNetUnfolder]: 361/669 cut-off events. [2023-08-31 01:03:57,080 INFO L131 PetriNetUnfolder]: For 2976/2978 co-relation queries the response was YES. [2023-08-31 01:03:57,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3025 conditions, 669 events. 361/669 cut-off events. For 2976/2978 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2944 event pairs, 42 based on Foata normal form. 18/687 useless extension candidates. Maximal degree in co-relation 2976. Up to 222 conditions per place. [2023-08-31 01:03:57,086 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 100 selfloop transitions, 36 changer transitions 6/143 dead transitions. [2023-08-31 01:03:57,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 1446 flow [2023-08-31 01:03:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:03:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:03:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1452 transitions. [2023-08-31 01:03:57,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934959349593496 [2023-08-31 01:03:57,089 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1452 transitions. [2023-08-31 01:03:57,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1452 transitions. [2023-08-31 01:03:57,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:57,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1452 transitions. [2023-08-31 01:03:57,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.33333333333334) internal successors, (1452), 9 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:57,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:57,095 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:57,095 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 810 flow. Second operand 9 states and 1452 transitions. [2023-08-31 01:03:57,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 1446 flow [2023-08-31 01:03:57,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 143 transitions, 1330 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-08-31 01:03:57,106 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 958 flow [2023-08-31 01:03:57,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-08-31 01:03:57,106 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-08-31 01:03:57,107 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 958 flow [2023-08-31 01:03:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:57,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:57,107 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:57,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:57,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-31 01:03:57,313 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:03:57,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash 966752974, now seen corresponding path program 13 times [2023-08-31 01:03:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388470279] [2023-08-31 01:03:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:03:58,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388470279] [2023-08-31 01:03:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388470279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095473423] [2023-08-31 01:03:58,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 01:03:58,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:58,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:58,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:58,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 01:03:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:58,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-31 01:03:58,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:58,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:03:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:03:58,830 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:03:58,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-31 01:03:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:03:59,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:59,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095473423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:59,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:59,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-08-31 01:03:59,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144005735] [2023-08-31 01:03:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:03:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:03:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-08-31 01:03:59,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 410 [2023-08-31 01:03:59,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 958 flow. Second operand has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:59,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:59,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 410 [2023-08-31 01:03:59,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:00,045 INFO L130 PetriNetUnfolder]: 361/671 cut-off events. [2023-08-31 01:04:00,045 INFO L131 PetriNetUnfolder]: For 3044/3046 co-relation queries the response was YES. [2023-08-31 01:04:00,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 671 events. 361/671 cut-off events. For 3044/3046 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2947 event pairs, 41 based on Foata normal form. 1/672 useless extension candidates. Maximal degree in co-relation 3110. Up to 231 conditions per place. [2023-08-31 01:04:00,050 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 90 selfloop transitions, 37 changer transitions 11/139 dead transitions. [2023-08-31 01:04:00,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 139 transitions, 1438 flow [2023-08-31 01:04:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:04:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:04:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1447 transitions. [2023-08-31 01:04:00,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3921409214092141 [2023-08-31 01:04:00,052 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1447 transitions. [2023-08-31 01:04:00,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1447 transitions. [2023-08-31 01:04:00,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:00,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1447 transitions. [2023-08-31 01:04:00,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:00,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:00,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:00,059 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 958 flow. Second operand 9 states and 1447 transitions. [2023-08-31 01:04:00,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 139 transitions, 1438 flow [2023-08-31 01:04:00,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 1394 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-31 01:04:00,073 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 995 flow [2023-08-31 01:04:00,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-08-31 01:04:00,073 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-08-31 01:04:00,073 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 995 flow [2023-08-31 01:04:00,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:00,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:00,074 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:00,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-31 01:04:00,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-31 01:04:00,279 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:00,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash -852520374, now seen corresponding path program 14 times [2023-08-31 01:04:00,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:00,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479930739] [2023-08-31 01:04:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:00,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:00,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:00,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479930739] [2023-08-31 01:04:00,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479930739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:00,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:00,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:04:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927153184] [2023-08-31 01:04:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:00,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:04:00,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:04:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:04:00,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:04:00,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 995 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:00,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:00,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:04:00,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:01,287 INFO L130 PetriNetUnfolder]: 452/837 cut-off events. [2023-08-31 01:04:01,287 INFO L131 PetriNetUnfolder]: For 4204/4206 co-relation queries the response was YES. [2023-08-31 01:04:01,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3938 conditions, 837 events. 452/837 cut-off events. For 4204/4206 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3861 event pairs, 63 based on Foata normal form. 7/843 useless extension candidates. Maximal degree in co-relation 3873. Up to 259 conditions per place. [2023-08-31 01:04:01,317 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 124 selfloop transitions, 52 changer transitions 6/183 dead transitions. [2023-08-31 01:04:01,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 1903 flow [2023-08-31 01:04:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:04:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:04:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2282 transitions. [2023-08-31 01:04:01,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975609756097561 [2023-08-31 01:04:01,325 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2282 transitions. [2023-08-31 01:04:01,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2282 transitions. [2023-08-31 01:04:01,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:01,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2282 transitions. [2023-08-31 01:04:01,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 163.0) internal successors, (2282), 14 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:01,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:01,335 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:01,335 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 995 flow. Second operand 14 states and 2282 transitions. [2023-08-31 01:04:01,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 1903 flow [2023-08-31 01:04:01,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 183 transitions, 1812 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-31 01:04:01,347 INFO L231 Difference]: Finished difference. Result has 116 places, 122 transitions, 1387 flow [2023-08-31 01:04:01,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1387, PETRI_PLACES=116, PETRI_TRANSITIONS=122} [2023-08-31 01:04:01,348 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 90 predicate places. [2023-08-31 01:04:01,348 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 122 transitions, 1387 flow [2023-08-31 01:04:01,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:01,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:01,349 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 01:04:01,349 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:01,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash 683574298, now seen corresponding path program 15 times [2023-08-31 01:04:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47135244] [2023-08-31 01:04:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:01,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:01,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47135244] [2023-08-31 01:04:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47135244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:01,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:01,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:04:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066421650] [2023-08-31 01:04:01,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:01,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:04:02,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 410 [2023-08-31 01:04:02,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 1387 flow. Second operand has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:02,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:02,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 410 [2023-08-31 01:04:02,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:02,776 INFO L130 PetriNetUnfolder]: 448/834 cut-off events. [2023-08-31 01:04:02,776 INFO L131 PetriNetUnfolder]: For 4917/4919 co-relation queries the response was YES. [2023-08-31 01:04:02,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 834 events. 448/834 cut-off events. For 4917/4919 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3898 event pairs, 60 based on Foata normal form. 5/839 useless extension candidates. Maximal degree in co-relation 4140. Up to 154 conditions per place. [2023-08-31 01:04:02,783 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 99 selfloop transitions, 63 changer transitions 14/177 dead transitions. [2023-08-31 01:04:02,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 177 transitions, 2026 flow [2023-08-31 01:04:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:04:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:04:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2079 transitions. [2023-08-31 01:04:02,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900562851782364 [2023-08-31 01:04:02,786 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2079 transitions. [2023-08-31 01:04:02,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2079 transitions. [2023-08-31 01:04:02,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:02,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2079 transitions. [2023-08-31 01:04:02,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 159.92307692307693) internal successors, (2079), 13 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:02,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:02,792 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:02,793 INFO L175 Difference]: Start difference. First operand has 116 places, 122 transitions, 1387 flow. Second operand 13 states and 2079 transitions. [2023-08-31 01:04:02,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 177 transitions, 2026 flow [2023-08-31 01:04:02,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 177 transitions, 1942 flow, removed 41 selfloop flow, removed 4 redundant places. [2023-08-31 01:04:02,812 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 1455 flow [2023-08-31 01:04:02,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1455, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2023-08-31 01:04:02,812 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2023-08-31 01:04:02,813 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 1455 flow [2023-08-31 01:04:02,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:02,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:02,813 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 01:04:02,813 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:02,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1934235582, now seen corresponding path program 16 times [2023-08-31 01:04:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763330881] [2023-08-31 01:04:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:03,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:03,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763330881] [2023-08-31 01:04:03,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763330881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:03,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:03,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:04:03,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106438121] [2023-08-31 01:04:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:03,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:03,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:03,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:04:03,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:04:03,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 1455 flow. Second operand has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 12 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:03,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:03,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:04:03,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:04,023 INFO L130 PetriNetUnfolder]: 435/823 cut-off events. [2023-08-31 01:04:04,023 INFO L131 PetriNetUnfolder]: For 5315/5317 co-relation queries the response was YES. [2023-08-31 01:04:04,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 823 events. 435/823 cut-off events. For 5315/5317 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3911 event pairs, 54 based on Foata normal form. 7/830 useless extension candidates. Maximal degree in co-relation 4090. Up to 239 conditions per place. [2023-08-31 01:04:04,028 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 98 selfloop transitions, 72 changer transitions 6/177 dead transitions. [2023-08-31 01:04:04,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 177 transitions, 2065 flow [2023-08-31 01:04:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 01:04:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 01:04:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2403 transitions. [2023-08-31 01:04:04,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907317073170732 [2023-08-31 01:04:04,034 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2403 transitions. [2023-08-31 01:04:04,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2403 transitions. [2023-08-31 01:04:04,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:04,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2403 transitions. [2023-08-31 01:04:04,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 160.2) internal successors, (2403), 15 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:04,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:04,040 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:04,040 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 1455 flow. Second operand 15 states and 2403 transitions. [2023-08-31 01:04:04,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 177 transitions, 2065 flow [2023-08-31 01:04:04,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 177 transitions, 1946 flow, removed 21 selfloop flow, removed 9 redundant places. [2023-08-31 01:04:04,057 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 1593 flow [2023-08-31 01:04:04,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1593, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2023-08-31 01:04:04,058 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 105 predicate places. [2023-08-31 01:04:04,058 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 1593 flow [2023-08-31 01:04:04,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 12 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:04,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:04,058 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:04,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 01:04:04,059 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:04,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash 472448766, now seen corresponding path program 17 times [2023-08-31 01:04:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556681580] [2023-08-31 01:04:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:04,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556681580] [2023-08-31 01:04:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556681580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:04,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:04:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365809880] [2023-08-31 01:04:04,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:04,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:04:04,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:04,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:04:04,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:04:04,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:04:04,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 1593 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:04,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:04,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:04:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:05,111 INFO L130 PetriNetUnfolder]: 433/823 cut-off events. [2023-08-31 01:04:05,111 INFO L131 PetriNetUnfolder]: For 5232/5234 co-relation queries the response was YES. [2023-08-31 01:04:05,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 823 events. 433/823 cut-off events. For 5232/5234 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3894 event pairs, 63 based on Foata normal form. 1/824 useless extension candidates. Maximal degree in co-relation 4251. Up to 263 conditions per place. [2023-08-31 01:04:05,118 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 125 selfloop transitions, 49 changer transitions 9/184 dead transitions. [2023-08-31 01:04:05,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 184 transitions, 2195 flow [2023-08-31 01:04:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:04:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:04:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2279 transitions. [2023-08-31 01:04:05,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970383275261324 [2023-08-31 01:04:05,122 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2279 transitions. [2023-08-31 01:04:05,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2279 transitions. [2023-08-31 01:04:05,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:05,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2279 transitions. [2023-08-31 01:04:05,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.78571428571428) internal successors, (2279), 14 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:05,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:05,128 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:05,129 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 1593 flow. Second operand 14 states and 2279 transitions. [2023-08-31 01:04:05,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 184 transitions, 2195 flow [2023-08-31 01:04:05,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 184 transitions, 2072 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-31 01:04:05,155 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1547 flow [2023-08-31 01:04:05,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1547, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2023-08-31 01:04:05,156 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2023-08-31 01:04:05,156 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1547 flow [2023-08-31 01:04:05,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:05,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:05,156 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:05,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 01:04:05,157 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:05,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:05,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1596096490, now seen corresponding path program 18 times [2023-08-31 01:04:05,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:05,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440957735] [2023-08-31 01:04:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:05,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:04:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:05,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440957735] [2023-08-31 01:04:05,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440957735] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:05,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956877006] [2023-08-31 01:04:05,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:04:05,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:05,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:05,891 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:05,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 01:04:06,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 01:04:06,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:04:06,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-31 01:04:06,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:06,412 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-31 01:04:06,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-08-31 01:04:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:06,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:04:06,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956877006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:06,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:04:06,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-08-31 01:04:06,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252210651] [2023-08-31 01:04:06,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:06,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:04:06,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:04:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-08-31 01:04:07,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:04:07,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1547 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:07,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:07,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:04:07,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:07,561 INFO L130 PetriNetUnfolder]: 437/841 cut-off events. [2023-08-31 01:04:07,561 INFO L131 PetriNetUnfolder]: For 5092/5094 co-relation queries the response was YES. [2023-08-31 01:04:07,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 841 events. 437/841 cut-off events. For 5092/5094 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4085 event pairs, 71 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 4316. Up to 337 conditions per place. [2023-08-31 01:04:07,570 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 122 selfloop transitions, 45 changer transitions 7/175 dead transitions. [2023-08-31 01:04:07,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 175 transitions, 2163 flow [2023-08-31 01:04:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:04:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:04:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1630 transitions. [2023-08-31 01:04:07,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975609756097561 [2023-08-31 01:04:07,572 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1630 transitions. [2023-08-31 01:04:07,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1630 transitions. [2023-08-31 01:04:07,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:07,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1630 transitions. [2023-08-31 01:04:07,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:07,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:07,576 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:07,576 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1547 flow. Second operand 10 states and 1630 transitions. [2023-08-31 01:04:07,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 175 transitions, 2163 flow [2023-08-31 01:04:07,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 175 transitions, 2049 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-31 01:04:07,595 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 1613 flow [2023-08-31 01:04:07,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1613, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2023-08-31 01:04:07,595 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 108 predicate places. [2023-08-31 01:04:07,595 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1613 flow [2023-08-31 01:04:07,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:07,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:07,596 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:07,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 01:04:07,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-31 01:04:07,800 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:07,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1486136962, now seen corresponding path program 19 times [2023-08-31 01:04:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780560404] [2023-08-31 01:04:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:04:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780560404] [2023-08-31 01:04:08,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780560404] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060559846] [2023-08-31 01:04:08,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 01:04:08,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:08,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:08,475 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:08,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 01:04:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:08,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-31 01:04:08,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:08,907 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-31 01:04:08,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-08-31 01:04:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:08,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:04:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060559846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:04:08,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-08-31 01:04:08,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96343657] [2023-08-31 01:04:08,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:08,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:04:08,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:04:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-08-31 01:04:09,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:04:09,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1613 flow. Second operand has 11 states, 11 states have (on average 157.72727272727272) internal successors, (1735), 11 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:09,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:04:09,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:09,683 INFO L130 PetriNetUnfolder]: 439/847 cut-off events. [2023-08-31 01:04:09,684 INFO L131 PetriNetUnfolder]: For 5256/5258 co-relation queries the response was YES. [2023-08-31 01:04:09,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4436 conditions, 847 events. 439/847 cut-off events. For 5256/5258 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4137 event pairs, 71 based on Foata normal form. 1/848 useless extension candidates. Maximal degree in co-relation 4350. Up to 351 conditions per place. [2023-08-31 01:04:09,688 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 115 selfloop transitions, 45 changer transitions 7/168 dead transitions. [2023-08-31 01:04:09,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 168 transitions, 2119 flow [2023-08-31 01:04:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:04:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:04:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1484 transitions. [2023-08-31 01:04:09,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021680216802168 [2023-08-31 01:04:09,690 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1484 transitions. [2023-08-31 01:04:09,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1484 transitions. [2023-08-31 01:04:09,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:09,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1484 transitions. [2023-08-31 01:04:09,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.88888888888889) internal successors, (1484), 9 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,693 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,693 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 1613 flow. Second operand 9 states and 1484 transitions. [2023-08-31 01:04:09,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 168 transitions, 2119 flow [2023-08-31 01:04:09,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 168 transitions, 2094 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-31 01:04:09,713 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 1707 flow [2023-08-31 01:04:09,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1707, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2023-08-31 01:04:09,713 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 113 predicate places. [2023-08-31 01:04:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 1707 flow [2023-08-31 01:04:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 157.72727272727272) internal successors, (1735), 11 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:09,714 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:09,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-31 01:04:09,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-31 01:04:09,919 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:09,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2108337346, now seen corresponding path program 20 times [2023-08-31 01:04:09,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:09,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525864903] [2023-08-31 01:04:09,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:09,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:10,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525864903] [2023-08-31 01:04:10,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525864903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:10,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:10,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:04:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941271253] [2023-08-31 01:04:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:10,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:04:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:04:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:04:10,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 410 [2023-08-31 01:04:10,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 1707 flow. Second operand has 11 states, 11 states have (on average 158.72727272727272) internal successors, (1746), 11 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:10,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:10,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 410 [2023-08-31 01:04:10,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:11,118 INFO L130 PetriNetUnfolder]: 461/873 cut-off events. [2023-08-31 01:04:11,118 INFO L131 PetriNetUnfolder]: For 6476/6478 co-relation queries the response was YES. [2023-08-31 01:04:11,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 873 events. 461/873 cut-off events. For 6476/6478 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4190 event pairs, 63 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 4688. Up to 273 conditions per place. [2023-08-31 01:04:11,122 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 129 selfloop transitions, 61 changer transitions 7/198 dead transitions. [2023-08-31 01:04:11,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 198 transitions, 2467 flow [2023-08-31 01:04:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:04:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:04:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2629 transitions. [2023-08-31 01:04:11,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007621951219512 [2023-08-31 01:04:11,125 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2629 transitions. [2023-08-31 01:04:11,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2629 transitions. [2023-08-31 01:04:11,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:11,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2629 transitions. [2023-08-31 01:04:11,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 164.3125) internal successors, (2629), 16 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:11,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:11,131 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:11,131 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 1707 flow. Second operand 16 states and 2629 transitions. [2023-08-31 01:04:11,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 198 transitions, 2467 flow [2023-08-31 01:04:11,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 198 transitions, 2362 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-08-31 01:04:11,151 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 1893 flow [2023-08-31 01:04:11,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1893, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2023-08-31 01:04:11,151 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 126 predicate places. [2023-08-31 01:04:11,152 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 1893 flow [2023-08-31 01:04:11,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 158.72727272727272) internal successors, (1746), 11 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:11,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:11,152 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:11,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 01:04:11,152 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:11,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash 798304752, now seen corresponding path program 21 times [2023-08-31 01:04:11,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260757918] [2023-08-31 01:04:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260757918] [2023-08-31 01:04:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260757918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:11,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:04:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334483726] [2023-08-31 01:04:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:11,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:04:12,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:04:12,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 1893 flow. Second operand has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 12 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:12,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:12,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:04:12,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:12,411 INFO L130 PetriNetUnfolder]: 459/867 cut-off events. [2023-08-31 01:04:12,411 INFO L131 PetriNetUnfolder]: For 6814/6816 co-relation queries the response was YES. [2023-08-31 01:04:12,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 867 events. 459/867 cut-off events. For 6814/6816 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4168 event pairs, 52 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 4919. Up to 255 conditions per place. [2023-08-31 01:04:12,415 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 97 selfloop transitions, 77 changer transitions 8/183 dead transitions. [2023-08-31 01:04:12,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 183 transitions, 2440 flow [2023-08-31 01:04:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 01:04:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 01:04:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2395 transitions. [2023-08-31 01:04:12,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38943089430894307 [2023-08-31 01:04:12,424 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2395 transitions. [2023-08-31 01:04:12,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2395 transitions. [2023-08-31 01:04:12,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:12,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2395 transitions. [2023-08-31 01:04:12,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 159.66666666666666) internal successors, (2395), 15 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:12,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:12,433 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:12,433 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 1893 flow. Second operand 15 states and 2395 transitions. [2023-08-31 01:04:12,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 183 transitions, 2440 flow [2023-08-31 01:04:12,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 183 transitions, 2360 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-08-31 01:04:12,453 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1936 flow [2023-08-31 01:04:12,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1936, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2023-08-31 01:04:12,454 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2023-08-31 01:04:12,454 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1936 flow [2023-08-31 01:04:12,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 12 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:12,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:12,454 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:12,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 01:04:12,455 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:12,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash -646550530, now seen corresponding path program 22 times [2023-08-31 01:04:12,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:12,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385150037] [2023-08-31 01:04:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:12,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:12,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385150037] [2023-08-31 01:04:12,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385150037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:12,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:04:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159658970] [2023-08-31 01:04:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:12,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:04:13,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:04:13,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 12 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:13,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:13,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:04:13,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:13,750 INFO L130 PetriNetUnfolder]: 454/854 cut-off events. [2023-08-31 01:04:13,750 INFO L131 PetriNetUnfolder]: For 6981/6983 co-relation queries the response was YES. [2023-08-31 01:04:13,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 854 events. 454/854 cut-off events. For 6981/6983 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4002 event pairs, 16 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 4983. Up to 316 conditions per place. [2023-08-31 01:04:13,756 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 106 selfloop transitions, 67 changer transitions 7/181 dead transitions. [2023-08-31 01:04:13,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 181 transitions, 2528 flow [2023-08-31 01:04:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:04:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:04:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2080 transitions. [2023-08-31 01:04:13,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2023-08-31 01:04:13,758 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2080 transitions. [2023-08-31 01:04:13,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2080 transitions. [2023-08-31 01:04:13,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:13,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2080 transitions. [2023-08-31 01:04:13,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:13,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:13,763 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:13,763 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1936 flow. Second operand 13 states and 2080 transitions. [2023-08-31 01:04:13,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 181 transitions, 2528 flow [2023-08-31 01:04:13,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 181 transitions, 2330 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-08-31 01:04:13,786 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1931 flow [2023-08-31 01:04:13,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1931, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2023-08-31 01:04:13,787 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 125 predicate places. [2023-08-31 01:04:13,787 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1931 flow [2023-08-31 01:04:13,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 12 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:13,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:13,787 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:13,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 01:04:13,787 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:13,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash -840236614, now seen corresponding path program 1 times [2023-08-31 01:04:13,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:13,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549856008] [2023-08-31 01:04:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:13,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:14,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:14,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549856008] [2023-08-31 01:04:14,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549856008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:14,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:14,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:04:14,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871999674] [2023-08-31 01:04:14,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:04:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:04:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:04:14,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-31 01:04:14,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1931 flow. Second operand has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:14,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:14,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-31 01:04:14,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:14,411 INFO L130 PetriNetUnfolder]: 474/891 cut-off events. [2023-08-31 01:04:14,412 INFO L131 PetriNetUnfolder]: For 7451/7451 co-relation queries the response was YES. [2023-08-31 01:04:14,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 891 events. 474/891 cut-off events. For 7451/7451 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 96 based on Foata normal form. 4/895 useless extension candidates. Maximal degree in co-relation 5261. Up to 396 conditions per place. [2023-08-31 01:04:14,417 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 123 selfloop transitions, 55 changer transitions 0/179 dead transitions. [2023-08-31 01:04:14,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 179 transitions, 2684 flow [2023-08-31 01:04:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:04:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:04:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1556 transitions. [2023-08-31 01:04:14,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421680216802168 [2023-08-31 01:04:14,419 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1556 transitions. [2023-08-31 01:04:14,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1556 transitions. [2023-08-31 01:04:14,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:14,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1556 transitions. [2023-08-31 01:04:14,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.88888888888889) internal successors, (1556), 9 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:14,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:14,426 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:14,426 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1931 flow. Second operand 9 states and 1556 transitions. [2023-08-31 01:04:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 179 transitions, 2684 flow [2023-08-31 01:04:14,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 179 transitions, 2512 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-08-31 01:04:14,448 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 2020 flow [2023-08-31 01:04:14,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2023-08-31 01:04:14,452 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 119 predicate places. [2023-08-31 01:04:14,452 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 2020 flow [2023-08-31 01:04:14,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:14,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:14,453 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:14,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 01:04:14,453 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:14,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1320325120, now seen corresponding path program 2 times [2023-08-31 01:04:14,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:14,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240891566] [2023-08-31 01:04:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:14,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:14,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240891566] [2023-08-31 01:04:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240891566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:14,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:14,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:04:14,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558459033] [2023-08-31 01:04:14,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:14,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:04:14,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:04:14,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:04:14,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-31 01:04:14,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 2020 flow. Second operand has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:14,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:14,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-31 01:04:14,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:15,059 INFO L130 PetriNetUnfolder]: 480/897 cut-off events. [2023-08-31 01:04:15,059 INFO L131 PetriNetUnfolder]: For 6949/6949 co-relation queries the response was YES. [2023-08-31 01:04:15,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5284 conditions, 897 events. 480/897 cut-off events. For 6949/6949 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4286 event pairs, 90 based on Foata normal form. 4/901 useless extension candidates. Maximal degree in co-relation 5177. Up to 387 conditions per place. [2023-08-31 01:04:15,065 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 125 selfloop transitions, 57 changer transitions 0/183 dead transitions. [2023-08-31 01:04:15,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 183 transitions, 2664 flow [2023-08-31 01:04:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:04:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:04:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1558 transitions. [2023-08-31 01:04:15,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-08-31 01:04:15,077 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1558 transitions. [2023-08-31 01:04:15,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1558 transitions. [2023-08-31 01:04:15,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:15,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1558 transitions. [2023-08-31 01:04:15,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,081 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,081 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 2020 flow. Second operand 9 states and 1558 transitions. [2023-08-31 01:04:15,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 183 transitions, 2664 flow [2023-08-31 01:04:15,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 183 transitions, 2635 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-31 01:04:15,105 INFO L231 Difference]: Finished difference. Result has 153 places, 156 transitions, 2207 flow [2023-08-31 01:04:15,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2207, PETRI_PLACES=153, PETRI_TRANSITIONS=156} [2023-08-31 01:04:15,107 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2023-08-31 01:04:15,108 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 156 transitions, 2207 flow [2023-08-31 01:04:15,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:15,108 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:15,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 01:04:15,108 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:15,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1989493530, now seen corresponding path program 3 times [2023-08-31 01:04:15,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:15,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768912590] [2023-08-31 01:04:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:15,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768912590] [2023-08-31 01:04:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768912590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:15,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:04:15,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449921862] [2023-08-31 01:04:15,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:15,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:04:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:15,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:04:15,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:04:15,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-31 01:04:15,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 156 transitions, 2207 flow. Second operand has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:15,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-31 01:04:15,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:15,781 INFO L130 PetriNetUnfolder]: 464/863 cut-off events. [2023-08-31 01:04:15,781 INFO L131 PetriNetUnfolder]: For 6970/6970 co-relation queries the response was YES. [2023-08-31 01:04:15,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5264 conditions, 863 events. 464/863 cut-off events. For 6970/6970 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4050 event pairs, 78 based on Foata normal form. 4/867 useless extension candidates. Maximal degree in co-relation 5155. Up to 279 conditions per place. [2023-08-31 01:04:15,787 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 139 selfloop transitions, 63 changer transitions 2/205 dead transitions. [2023-08-31 01:04:15,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 205 transitions, 3075 flow [2023-08-31 01:04:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:04:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:04:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1567 transitions. [2023-08-31 01:04:15,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246612466124661 [2023-08-31 01:04:15,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1567 transitions. [2023-08-31 01:04:15,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1567 transitions. [2023-08-31 01:04:15,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:15,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1567 transitions. [2023-08-31 01:04:15,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 174.11111111111111) internal successors, (1567), 9 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,793 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,793 INFO L175 Difference]: Start difference. First operand has 153 places, 156 transitions, 2207 flow. Second operand 9 states and 1567 transitions. [2023-08-31 01:04:15,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 205 transitions, 3075 flow [2023-08-31 01:04:15,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 205 transitions, 3046 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-31 01:04:15,817 INFO L231 Difference]: Finished difference. Result has 161 places, 162 transitions, 2445 flow [2023-08-31 01:04:15,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2445, PETRI_PLACES=161, PETRI_TRANSITIONS=162} [2023-08-31 01:04:15,818 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2023-08-31 01:04:15,818 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 162 transitions, 2445 flow [2023-08-31 01:04:15,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:15,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:15,819 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:15,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 01:04:15,819 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:15,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2037644614, now seen corresponding path program 4 times [2023-08-31 01:04:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:15,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248496412] [2023-08-31 01:04:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:16,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:16,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248496412] [2023-08-31 01:04:16,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248496412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:16,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:16,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:04:16,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168330075] [2023-08-31 01:04:16,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:04:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:04:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:04:16,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-31 01:04:16,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 162 transitions, 2445 flow. Second operand has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:16,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:16,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-31 01:04:16,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:16,432 INFO L130 PetriNetUnfolder]: 498/923 cut-off events. [2023-08-31 01:04:16,433 INFO L131 PetriNetUnfolder]: For 9048/9050 co-relation queries the response was YES. [2023-08-31 01:04:16,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 923 events. 498/923 cut-off events. For 9048/9050 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4371 event pairs, 43 based on Foata normal form. 4/927 useless extension candidates. Maximal degree in co-relation 5739. Up to 406 conditions per place. [2023-08-31 01:04:16,440 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 179 selfloop transitions, 34 changer transitions 4/218 dead transitions. [2023-08-31 01:04:16,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 218 transitions, 3427 flow [2023-08-31 01:04:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:04:16,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:04:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1222 transitions. [2023-08-31 01:04:16,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578397212543556 [2023-08-31 01:04:16,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1222 transitions. [2023-08-31 01:04:16,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1222 transitions. [2023-08-31 01:04:16,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:16,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1222 transitions. [2023-08-31 01:04:16,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.57142857142858) internal successors, (1222), 7 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:16,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:16,445 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:16,445 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 2445 flow. Second operand 7 states and 1222 transitions. [2023-08-31 01:04:16,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 218 transitions, 3427 flow [2023-08-31 01:04:16,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 218 transitions, 3337 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-31 01:04:16,473 INFO L231 Difference]: Finished difference. Result has 164 places, 168 transitions, 2584 flow [2023-08-31 01:04:16,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2584, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2023-08-31 01:04:16,473 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 138 predicate places. [2023-08-31 01:04:16,473 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 2584 flow [2023-08-31 01:04:16,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:16,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:16,474 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:16,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 01:04:16,474 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:16,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1323057116, now seen corresponding path program 5 times [2023-08-31 01:04:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245232217] [2023-08-31 01:04:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:16,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:16,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245232217] [2023-08-31 01:04:16,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245232217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:16,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911258513] [2023-08-31 01:04:16,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:04:16,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:16,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:16,666 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:16,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-31 01:04:16,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-31 01:04:16,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:04:16,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-31 01:04:16,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:16,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:04:17,026 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-31 01:04:17,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-08-31 01:04:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:17,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911258513] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:04:17,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:04:17,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2023-08-31 01:04:17,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816600992] [2023-08-31 01:04:17,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:04:17,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:04:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:17,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:04:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-08-31 01:04:17,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-08-31 01:04:17,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 2584 flow. Second operand has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:17,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:17,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-08-31 01:04:17,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:17,907 INFO L130 PetriNetUnfolder]: 501/939 cut-off events. [2023-08-31 01:04:17,907 INFO L131 PetriNetUnfolder]: For 9466/9468 co-relation queries the response was YES. [2023-08-31 01:04:17,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 939 events. 501/939 cut-off events. For 9466/9468 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4520 event pairs, 91 based on Foata normal form. 6/945 useless extension candidates. Maximal degree in co-relation 5813. Up to 414 conditions per place. [2023-08-31 01:04:17,913 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 142 selfloop transitions, 81 changer transitions 2/226 dead transitions. [2023-08-31 01:04:17,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 226 transitions, 3531 flow [2023-08-31 01:04:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:04:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:04:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2016 transitions. [2023-08-31 01:04:17,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2023-08-31 01:04:17,916 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2016 transitions. [2023-08-31 01:04:17,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2016 transitions. [2023-08-31 01:04:17,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:17,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2016 transitions. [2023-08-31 01:04:17,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:17,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:17,921 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:17,921 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 2584 flow. Second operand 12 states and 2016 transitions. [2023-08-31 01:04:17,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 226 transitions, 3531 flow [2023-08-31 01:04:17,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 226 transitions, 3412 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-31 01:04:17,956 INFO L231 Difference]: Finished difference. Result has 171 places, 176 transitions, 2779 flow [2023-08-31 01:04:17,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2779, PETRI_PLACES=171, PETRI_TRANSITIONS=176} [2023-08-31 01:04:17,957 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2023-08-31 01:04:17,957 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 176 transitions, 2779 flow [2023-08-31 01:04:17,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:17,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:17,958 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:17,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-31 01:04:18,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:18,163 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:18,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 362584518, now seen corresponding path program 6 times [2023-08-31 01:04:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:18,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988394859] [2023-08-31 01:04:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:18,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988394859] [2023-08-31 01:04:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988394859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107803057] [2023-08-31 01:04:18,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:04:18,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:18,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:18,409 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:18,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-31 01:04:18,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 01:04:18,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:04:18,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-31 01:04:18,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:18,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:04:18,729 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-31 01:04:18,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-08-31 01:04:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:18,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107803057] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:04:18,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:04:18,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 17 [2023-08-31 01:04:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050833785] [2023-08-31 01:04:18,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:04:18,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 01:04:18,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 01:04:18,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:04:19,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-08-31 01:04:19,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 176 transitions, 2779 flow. Second operand has 17 states, 17 states have (on average 163.35294117647058) internal successors, (2777), 17 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:19,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:19,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-08-31 01:04:19,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:19,481 INFO L130 PetriNetUnfolder]: 482/898 cut-off events. [2023-08-31 01:04:19,482 INFO L131 PetriNetUnfolder]: For 9419/9419 co-relation queries the response was YES. [2023-08-31 01:04:19,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 898 events. 482/898 cut-off events. For 9419/9419 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4259 event pairs, 95 based on Foata normal form. 4/902 useless extension candidates. Maximal degree in co-relation 5748. Up to 458 conditions per place. [2023-08-31 01:04:19,487 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 126 selfloop transitions, 80 changer transitions 0/207 dead transitions. [2023-08-31 01:04:19,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 207 transitions, 3382 flow [2023-08-31 01:04:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:04:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:04:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1845 transitions. [2023-08-31 01:04:19,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2023-08-31 01:04:19,488 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1845 transitions. [2023-08-31 01:04:19,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1845 transitions. [2023-08-31 01:04:19,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:19,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1845 transitions. [2023-08-31 01:04:19,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.72727272727272) internal successors, (1845), 11 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:19,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:19,492 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:19,492 INFO L175 Difference]: Start difference. First operand has 171 places, 176 transitions, 2779 flow. Second operand 11 states and 1845 transitions. [2023-08-31 01:04:19,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 207 transitions, 3382 flow [2023-08-31 01:04:19,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 207 transitions, 3097 flow, removed 43 selfloop flow, removed 18 redundant places. [2023-08-31 01:04:19,519 INFO L231 Difference]: Finished difference. Result has 159 places, 171 transitions, 2594 flow [2023-08-31 01:04:19,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2594, PETRI_PLACES=159, PETRI_TRANSITIONS=171} [2023-08-31 01:04:19,520 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2023-08-31 01:04:19,520 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 171 transitions, 2594 flow [2023-08-31 01:04:19,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 163.35294117647058) internal successors, (2777), 17 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:19,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:19,521 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:19,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-31 01:04:19,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:19,726 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:19,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash -310847470, now seen corresponding path program 7 times [2023-08-31 01:04:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:19,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202148996] [2023-08-31 01:04:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:19,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:20,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202148996] [2023-08-31 01:04:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202148996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:20,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:04:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634188118] [2023-08-31 01:04:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:04:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:04:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:04:20,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 410 [2023-08-31 01:04:20,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 171 transitions, 2594 flow. Second operand has 9 states, 9 states have (on average 164.22222222222223) internal successors, (1478), 9 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:20,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:20,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 410 [2023-08-31 01:04:20,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:20,428 INFO L130 PetriNetUnfolder]: 466/870 cut-off events. [2023-08-31 01:04:20,428 INFO L131 PetriNetUnfolder]: For 7974/7974 co-relation queries the response was YES. [2023-08-31 01:04:20,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5465 conditions, 870 events. 466/870 cut-off events. For 7974/7974 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4107 event pairs, 75 based on Foata normal form. 4/874 useless extension candidates. Maximal degree in co-relation 5365. Up to 303 conditions per place. [2023-08-31 01:04:20,433 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 108 selfloop transitions, 80 changer transitions 2/191 dead transitions. [2023-08-31 01:04:20,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 191 transitions, 3116 flow [2023-08-31 01:04:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:04:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:04:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1522 transitions. [2023-08-31 01:04:20,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124661246612466 [2023-08-31 01:04:20,435 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1522 transitions. [2023-08-31 01:04:20,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1522 transitions. [2023-08-31 01:04:20,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:20,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1522 transitions. [2023-08-31 01:04:20,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 169.11111111111111) internal successors, (1522), 9 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:20,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:20,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:20,438 INFO L175 Difference]: Start difference. First operand has 159 places, 171 transitions, 2594 flow. Second operand 9 states and 1522 transitions. [2023-08-31 01:04:20,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 191 transitions, 3116 flow [2023-08-31 01:04:20,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 191 transitions, 3047 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-31 01:04:20,460 INFO L231 Difference]: Finished difference. Result has 160 places, 167 transitions, 2641 flow [2023-08-31 01:04:20,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2641, PETRI_PLACES=160, PETRI_TRANSITIONS=167} [2023-08-31 01:04:20,462 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2023-08-31 01:04:20,462 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 167 transitions, 2641 flow [2023-08-31 01:04:20,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 164.22222222222223) internal successors, (1478), 9 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:20,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:20,462 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:20,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 01:04:20,463 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:20,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2085281639, now seen corresponding path program 1 times [2023-08-31 01:04:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090896248] [2023-08-31 01:04:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:20,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:20,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090896248] [2023-08-31 01:04:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090896248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936713559] [2023-08-31 01:04:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:21,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:21,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 167 transitions, 2641 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:21,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:21,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:21,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:21,955 INFO L130 PetriNetUnfolder]: 779/1372 cut-off events. [2023-08-31 01:04:21,955 INFO L131 PetriNetUnfolder]: For 11657/11657 co-relation queries the response was YES. [2023-08-31 01:04:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8295 conditions, 1372 events. 779/1372 cut-off events. For 11657/11657 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6742 event pairs, 77 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 8195. Up to 227 conditions per place. [2023-08-31 01:04:21,962 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 190 selfloop transitions, 141 changer transitions 5/336 dead transitions. [2023-08-31 01:04:21,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 336 transitions, 4769 flow [2023-08-31 01:04:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:04:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:04:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3573 transitions. [2023-08-31 01:04:21,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39611973392461197 [2023-08-31 01:04:21,974 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3573 transitions. [2023-08-31 01:04:21,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3573 transitions. [2023-08-31 01:04:21,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:21,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3573 transitions. [2023-08-31 01:04:21,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 162.4090909090909) internal successors, (3573), 22 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:21,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:21,992 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:21,992 INFO L175 Difference]: Start difference. First operand has 160 places, 167 transitions, 2641 flow. Second operand 22 states and 3573 transitions. [2023-08-31 01:04:21,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 336 transitions, 4769 flow [2023-08-31 01:04:22,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 336 transitions, 4603 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-31 01:04:22,023 INFO L231 Difference]: Finished difference. Result has 182 places, 227 transitions, 3813 flow [2023-08-31 01:04:22,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3813, PETRI_PLACES=182, PETRI_TRANSITIONS=227} [2023-08-31 01:04:22,023 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 156 predicate places. [2023-08-31 01:04:22,024 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 227 transitions, 3813 flow [2023-08-31 01:04:22,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:22,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:22,024 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:22,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 01:04:22,024 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:22,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:22,025 INFO L85 PathProgramCache]: Analyzing trace with hash 667533083, now seen corresponding path program 2 times [2023-08-31 01:04:22,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:22,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35716232] [2023-08-31 01:04:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:22,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:22,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:22,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35716232] [2023-08-31 01:04:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35716232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:22,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:04:22,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412106715] [2023-08-31 01:04:22,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:22,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:22,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:04:22,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 410 [2023-08-31 01:04:22,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 227 transitions, 3813 flow. Second operand has 12 states, 12 states have (on average 153.75) internal successors, (1845), 12 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:22,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:22,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 410 [2023-08-31 01:04:22,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:23,461 INFO L130 PetriNetUnfolder]: 941/1663 cut-off events. [2023-08-31 01:04:23,461 INFO L131 PetriNetUnfolder]: For 17550/17550 co-relation queries the response was YES. [2023-08-31 01:04:23,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 1663 events. 941/1663 cut-off events. For 17550/17550 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8740 event pairs, 65 based on Foata normal form. 10/1673 useless extension candidates. Maximal degree in co-relation 10651. Up to 269 conditions per place. [2023-08-31 01:04:23,473 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 191 selfloop transitions, 145 changer transitions 12/348 dead transitions. [2023-08-31 01:04:23,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 348 transitions, 5614 flow [2023-08-31 01:04:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 01:04:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 01:04:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3041 transitions. [2023-08-31 01:04:23,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39037227214377407 [2023-08-31 01:04:23,476 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3041 transitions. [2023-08-31 01:04:23,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3041 transitions. [2023-08-31 01:04:23,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:23,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3041 transitions. [2023-08-31 01:04:23,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 160.05263157894737) internal successors, (3041), 19 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:23,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:23,483 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:23,483 INFO L175 Difference]: Start difference. First operand has 182 places, 227 transitions, 3813 flow. Second operand 19 states and 3041 transitions. [2023-08-31 01:04:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 348 transitions, 5614 flow [2023-08-31 01:04:23,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 348 transitions, 5459 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-31 01:04:23,540 INFO L231 Difference]: Finished difference. Result has 205 places, 253 transitions, 4485 flow [2023-08-31 01:04:23,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4485, PETRI_PLACES=205, PETRI_TRANSITIONS=253} [2023-08-31 01:04:23,541 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 179 predicate places. [2023-08-31 01:04:23,541 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 253 transitions, 4485 flow [2023-08-31 01:04:23,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.75) internal successors, (1845), 12 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:23,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:23,542 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:23,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 01:04:23,542 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:23,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash 888752717, now seen corresponding path program 3 times [2023-08-31 01:04:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459935826] [2023-08-31 01:04:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:24,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459935826] [2023-08-31 01:04:24,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459935826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:24,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:24,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:24,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884009314] [2023-08-31 01:04:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:24,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:24,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:04:24,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 253 transitions, 4485 flow. Second operand has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:24,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:24,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:04:24,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:25,311 INFO L130 PetriNetUnfolder]: 1087/1908 cut-off events. [2023-08-31 01:04:25,312 INFO L131 PetriNetUnfolder]: For 20831/20831 co-relation queries the response was YES. [2023-08-31 01:04:25,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12887 conditions, 1908 events. 1087/1908 cut-off events. For 20831/20831 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10109 event pairs, 119 based on Foata normal form. 3/1911 useless extension candidates. Maximal degree in co-relation 12769. Up to 342 conditions per place. [2023-08-31 01:04:25,324 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 246 selfloop transitions, 172 changer transitions 8/426 dead transitions. [2023-08-31 01:04:25,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 426 transitions, 6572 flow [2023-08-31 01:04:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-31 01:04:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-31 01:04:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4215 transitions. [2023-08-31 01:04:25,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954033771106942 [2023-08-31 01:04:25,327 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4215 transitions. [2023-08-31 01:04:25,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4215 transitions. [2023-08-31 01:04:25,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:25,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4215 transitions. [2023-08-31 01:04:25,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 162.1153846153846) internal successors, (4215), 26 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:25,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:25,335 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:25,335 INFO L175 Difference]: Start difference. First operand has 205 places, 253 transitions, 4485 flow. Second operand 26 states and 4215 transitions. [2023-08-31 01:04:25,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 426 transitions, 6572 flow [2023-08-31 01:04:25,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 426 transitions, 6453 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-31 01:04:25,404 INFO L231 Difference]: Finished difference. Result has 231 places, 275 transitions, 5127 flow [2023-08-31 01:04:25,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4386, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5127, PETRI_PLACES=231, PETRI_TRANSITIONS=275} [2023-08-31 01:04:25,404 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 205 predicate places. [2023-08-31 01:04:25,404 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 275 transitions, 5127 flow [2023-08-31 01:04:25,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:25,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:25,405 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 01:04:25,405 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:25,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1880887905, now seen corresponding path program 4 times [2023-08-31 01:04:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23887543] [2023-08-31 01:04:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:25,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:25,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23887543] [2023-08-31 01:04:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23887543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:25,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696829682] [2023-08-31 01:04:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:25,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:25,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:25,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:26,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:04:26,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 275 transitions, 5127 flow. Second operand has 13 states, 13 states have (on average 156.6153846153846) internal successors, (2036), 13 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:26,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:26,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:04:26,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:26,942 INFO L130 PetriNetUnfolder]: 1128/1993 cut-off events. [2023-08-31 01:04:26,942 INFO L131 PetriNetUnfolder]: For 24120/24120 co-relation queries the response was YES. [2023-08-31 01:04:26,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14386 conditions, 1993 events. 1128/1993 cut-off events. For 24120/24120 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10773 event pairs, 194 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 14261. Up to 580 conditions per place. [2023-08-31 01:04:26,956 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 202 selfloop transitions, 163 changer transitions 6/371 dead transitions. [2023-08-31 01:04:26,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 371 transitions, 6732 flow [2023-08-31 01:04:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:04:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:04:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3567 transitions. [2023-08-31 01:04:26,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2023-08-31 01:04:26,959 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3567 transitions. [2023-08-31 01:04:26,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3567 transitions. [2023-08-31 01:04:26,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:26,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3567 transitions. [2023-08-31 01:04:26,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 162.13636363636363) internal successors, (3567), 22 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:26,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:26,965 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:26,965 INFO L175 Difference]: Start difference. First operand has 231 places, 275 transitions, 5127 flow. Second operand 22 states and 3567 transitions. [2023-08-31 01:04:26,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 371 transitions, 6732 flow [2023-08-31 01:04:27,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 371 transitions, 6502 flow, removed 23 selfloop flow, removed 13 redundant places. [2023-08-31 01:04:27,048 INFO L231 Difference]: Finished difference. Result has 245 places, 296 transitions, 5749 flow [2023-08-31 01:04:27,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5749, PETRI_PLACES=245, PETRI_TRANSITIONS=296} [2023-08-31 01:04:27,049 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 219 predicate places. [2023-08-31 01:04:27,049 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 296 transitions, 5749 flow [2023-08-31 01:04:27,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 156.6153846153846) internal successors, (2036), 13 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:27,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:27,049 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:27,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 01:04:27,050 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:27,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1306807323, now seen corresponding path program 5 times [2023-08-31 01:04:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:27,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123882491] [2023-08-31 01:04:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:27,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123882491] [2023-08-31 01:04:27,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123882491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:27,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:27,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:27,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646538447] [2023-08-31 01:04:27,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:27,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:27,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:04:27,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 296 transitions, 5749 flow. Second operand has 13 states, 13 states have (on average 156.6153846153846) internal successors, (2036), 13 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:27,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:27,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:04:27,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:28,549 INFO L130 PetriNetUnfolder]: 1136/2017 cut-off events. [2023-08-31 01:04:28,550 INFO L131 PetriNetUnfolder]: For 26640/26640 co-relation queries the response was YES. [2023-08-31 01:04:28,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14854 conditions, 2017 events. 1136/2017 cut-off events. For 26640/26640 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11075 event pairs, 190 based on Foata normal form. 1/2018 useless extension candidates. Maximal degree in co-relation 14722. Up to 580 conditions per place. [2023-08-31 01:04:28,565 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 206 selfloop transitions, 160 changer transitions 6/372 dead transitions. [2023-08-31 01:04:28,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 372 transitions, 7055 flow [2023-08-31 01:04:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 01:04:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 01:04:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3085 transitions. [2023-08-31 01:04:28,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39602053915276 [2023-08-31 01:04:28,568 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3085 transitions. [2023-08-31 01:04:28,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3085 transitions. [2023-08-31 01:04:28,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:28,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3085 transitions. [2023-08-31 01:04:28,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 162.3684210526316) internal successors, (3085), 19 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:28,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:28,574 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:28,574 INFO L175 Difference]: Start difference. First operand has 245 places, 296 transitions, 5749 flow. Second operand 19 states and 3085 transitions. [2023-08-31 01:04:28,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 372 transitions, 7055 flow [2023-08-31 01:04:28,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 372 transitions, 6837 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-08-31 01:04:28,660 INFO L231 Difference]: Finished difference. Result has 258 places, 301 transitions, 6024 flow [2023-08-31 01:04:28,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5541, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6024, PETRI_PLACES=258, PETRI_TRANSITIONS=301} [2023-08-31 01:04:28,661 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 232 predicate places. [2023-08-31 01:04:28,661 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 301 transitions, 6024 flow [2023-08-31 01:04:28,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 156.6153846153846) internal successors, (2036), 13 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:28,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:28,662 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:28,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 01:04:28,662 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:28,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:28,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1266843037, now seen corresponding path program 6 times [2023-08-31 01:04:28,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:28,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570071497] [2023-08-31 01:04:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:28,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:29,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:29,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570071497] [2023-08-31 01:04:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570071497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:29,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:04:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671058029] [2023-08-31 01:04:29,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:29,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:29,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:29,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:29,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:04:29,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:04:29,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 301 transitions, 6024 flow. Second operand has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:29,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:29,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:04:29,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:30,260 INFO L130 PetriNetUnfolder]: 1178/2248 cut-off events. [2023-08-31 01:04:30,260 INFO L131 PetriNetUnfolder]: For 29035/29040 co-relation queries the response was YES. [2023-08-31 01:04:30,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16138 conditions, 2248 events. 1178/2248 cut-off events. For 29035/29040 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13507 event pairs, 77 based on Foata normal form. 7/2253 useless extension candidates. Maximal degree in co-relation 16002. Up to 400 conditions per place. [2023-08-31 01:04:30,280 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 207 selfloop transitions, 228 changer transitions 9/451 dead transitions. [2023-08-31 01:04:30,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 451 transitions, 8110 flow [2023-08-31 01:04:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-31 01:04:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-31 01:04:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4228 transitions. [2023-08-31 01:04:30,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39662288930581613 [2023-08-31 01:04:30,283 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4228 transitions. [2023-08-31 01:04:30,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4228 transitions. [2023-08-31 01:04:30,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:30,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4228 transitions. [2023-08-31 01:04:30,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 162.6153846153846) internal successors, (4228), 26 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:30,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:30,291 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:30,291 INFO L175 Difference]: Start difference. First operand has 258 places, 301 transitions, 6024 flow. Second operand 26 states and 4228 transitions. [2023-08-31 01:04:30,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 451 transitions, 8110 flow [2023-08-31 01:04:30,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 451 transitions, 7754 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-08-31 01:04:30,387 INFO L231 Difference]: Finished difference. Result has 275 places, 340 transitions, 6873 flow [2023-08-31 01:04:30,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5697, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6873, PETRI_PLACES=275, PETRI_TRANSITIONS=340} [2023-08-31 01:04:30,387 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 249 predicate places. [2023-08-31 01:04:30,387 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 340 transitions, 6873 flow [2023-08-31 01:04:30,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:30,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:30,388 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 01:04:30,388 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:30,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1703155119, now seen corresponding path program 7 times [2023-08-31 01:04:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:30,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25311845] [2023-08-31 01:04:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:30,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:30,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:30,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25311845] [2023-08-31 01:04:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25311845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:30,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:30,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390997428] [2023-08-31 01:04:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:30,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:31,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:31,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 340 transitions, 6873 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:31,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:31,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:31,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:32,127 INFO L130 PetriNetUnfolder]: 1395/2544 cut-off events. [2023-08-31 01:04:32,127 INFO L131 PetriNetUnfolder]: For 35241/35241 co-relation queries the response was YES. [2023-08-31 01:04:32,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19094 conditions, 2544 events. 1395/2544 cut-off events. For 35241/35241 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14857 event pairs, 211 based on Foata normal form. 1/2545 useless extension candidates. Maximal degree in co-relation 18951. Up to 871 conditions per place. [2023-08-31 01:04:32,151 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 248 selfloop transitions, 181 changer transitions 6/435 dead transitions. [2023-08-31 01:04:32,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 435 transitions, 8561 flow [2023-08-31 01:04:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:04:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:04:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3548 transitions. [2023-08-31 01:04:32,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39334811529933483 [2023-08-31 01:04:32,154 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3548 transitions. [2023-08-31 01:04:32,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3548 transitions. [2023-08-31 01:04:32,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:32,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3548 transitions. [2023-08-31 01:04:32,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 161.27272727272728) internal successors, (3548), 22 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:32,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:32,161 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:32,161 INFO L175 Difference]: Start difference. First operand has 275 places, 340 transitions, 6873 flow. Second operand 22 states and 3548 transitions. [2023-08-31 01:04:32,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 435 transitions, 8561 flow [2023-08-31 01:04:32,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 435 transitions, 8037 flow, removed 61 selfloop flow, removed 20 redundant places. [2023-08-31 01:04:32,316 INFO L231 Difference]: Finished difference. Result has 280 places, 353 transitions, 7083 flow [2023-08-31 01:04:32,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7083, PETRI_PLACES=280, PETRI_TRANSITIONS=353} [2023-08-31 01:04:32,317 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 254 predicate places. [2023-08-31 01:04:32,318 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 353 transitions, 7083 flow [2023-08-31 01:04:32,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:32,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:32,318 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:32,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 01:04:32,318 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:32,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash 922318553, now seen corresponding path program 8 times [2023-08-31 01:04:32,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815049888] [2023-08-31 01:04:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:32,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:32,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815049888] [2023-08-31 01:04:32,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815049888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:32,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:32,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:32,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974381224] [2023-08-31 01:04:32,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:32,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:32,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:32,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:33,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:33,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 353 transitions, 7083 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:33,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:33,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:33,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:33,990 INFO L130 PetriNetUnfolder]: 1390/2533 cut-off events. [2023-08-31 01:04:33,990 INFO L131 PetriNetUnfolder]: For 32940/32940 co-relation queries the response was YES. [2023-08-31 01:04:34,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18955 conditions, 2533 events. 1390/2533 cut-off events. For 32940/32940 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14779 event pairs, 216 based on Foata normal form. 3/2536 useless extension candidates. Maximal degree in co-relation 18810. Up to 919 conditions per place. [2023-08-31 01:04:34,007 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 231 selfloop transitions, 175 changer transitions 11/417 dead transitions. [2023-08-31 01:04:34,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 417 transitions, 8236 flow [2023-08-31 01:04:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 01:04:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 01:04:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3222 transitions. [2023-08-31 01:04:34,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3929268292682927 [2023-08-31 01:04:34,010 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3222 transitions. [2023-08-31 01:04:34,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3222 transitions. [2023-08-31 01:04:34,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:34,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3222 transitions. [2023-08-31 01:04:34,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 161.1) internal successors, (3222), 20 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:34,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:34,016 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:34,016 INFO L175 Difference]: Start difference. First operand has 280 places, 353 transitions, 7083 flow. Second operand 20 states and 3222 transitions. [2023-08-31 01:04:34,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 417 transitions, 8236 flow [2023-08-31 01:04:34,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 417 transitions, 7950 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-08-31 01:04:34,141 INFO L231 Difference]: Finished difference. Result has 286 places, 349 transitions, 7063 flow [2023-08-31 01:04:34,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6772, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7063, PETRI_PLACES=286, PETRI_TRANSITIONS=349} [2023-08-31 01:04:34,141 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2023-08-31 01:04:34,142 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 349 transitions, 7063 flow [2023-08-31 01:04:34,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:34,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:34,142 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 01:04:34,142 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:34,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2017731595, now seen corresponding path program 9 times [2023-08-31 01:04:34,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:34,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949842356] [2023-08-31 01:04:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:04:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949842356] [2023-08-31 01:04:34,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949842356] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333091315] [2023-08-31 01:04:34,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:04:34,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:34,909 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:34,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-31 01:04:35,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:04:35,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:04:35,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-31 01:04:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:35,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:04:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333091315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:35,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:04:35,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 28 [2023-08-31 01:04:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259390664] [2023-08-31 01:04:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:35,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2023-08-31 01:04:35,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:35,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 349 transitions, 7063 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:35,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:35,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:35,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:36,795 INFO L130 PetriNetUnfolder]: 1386/2517 cut-off events. [2023-08-31 01:04:36,795 INFO L131 PetriNetUnfolder]: For 34874/34874 co-relation queries the response was YES. [2023-08-31 01:04:36,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18880 conditions, 2517 events. 1386/2517 cut-off events. For 34874/34874 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14570 event pairs, 214 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 18733. Up to 1256 conditions per place. [2023-08-31 01:04:36,815 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 273 selfloop transitions, 127 changer transitions 5/405 dead transitions. [2023-08-31 01:04:36,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 405 transitions, 8207 flow [2023-08-31 01:04:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:04:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:04:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2274 transitions. [2023-08-31 01:04:36,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39616724738675957 [2023-08-31 01:04:36,817 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2274 transitions. [2023-08-31 01:04:36,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2274 transitions. [2023-08-31 01:04:36,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:36,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2274 transitions. [2023-08-31 01:04:36,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.42857142857142) internal successors, (2274), 14 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:36,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:36,821 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:36,821 INFO L175 Difference]: Start difference. First operand has 286 places, 349 transitions, 7063 flow. Second operand 14 states and 2274 transitions. [2023-08-31 01:04:36,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 405 transitions, 8207 flow [2023-08-31 01:04:36,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 7870 flow, removed 3 selfloop flow, removed 19 redundant places. [2023-08-31 01:04:36,950 INFO L231 Difference]: Finished difference. Result has 278 places, 352 transitions, 7034 flow [2023-08-31 01:04:36,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7034, PETRI_PLACES=278, PETRI_TRANSITIONS=352} [2023-08-31 01:04:36,951 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2023-08-31 01:04:36,951 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 352 transitions, 7034 flow [2023-08-31 01:04:36,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:36,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:36,951 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:36,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-31 01:04:37,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:37,157 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:37,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1516426929, now seen corresponding path program 10 times [2023-08-31 01:04:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:37,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086144281] [2023-08-31 01:04:37,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:37,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:37,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086144281] [2023-08-31 01:04:37,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086144281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:37,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:37,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:37,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711521805] [2023-08-31 01:04:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:37,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:37,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:04:37,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 352 transitions, 7034 flow. Second operand has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:37,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:37,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:04:37,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:39,071 INFO L130 PetriNetUnfolder]: 1552/2839 cut-off events. [2023-08-31 01:04:39,071 INFO L131 PetriNetUnfolder]: For 40089/40089 co-relation queries the response was YES. [2023-08-31 01:04:39,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20996 conditions, 2839 events. 1552/2839 cut-off events. For 40089/40089 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17162 event pairs, 114 based on Foata normal form. 2/2841 useless extension candidates. Maximal degree in co-relation 20850. Up to 583 conditions per place. [2023-08-31 01:04:39,095 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 224 selfloop transitions, 272 changer transitions 5/501 dead transitions. [2023-08-31 01:04:39,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 501 transitions, 9435 flow [2023-08-31 01:04:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-31 01:04:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-31 01:04:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4182 transitions. [2023-08-31 01:04:39,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2023-08-31 01:04:39,098 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4182 transitions. [2023-08-31 01:04:39,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4182 transitions. [2023-08-31 01:04:39,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:39,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4182 transitions. [2023-08-31 01:04:39,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.84615384615384) internal successors, (4182), 26 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:39,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:39,106 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:39,107 INFO L175 Difference]: Start difference. First operand has 278 places, 352 transitions, 7034 flow. Second operand 26 states and 4182 transitions. [2023-08-31 01:04:39,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 501 transitions, 9435 flow [2023-08-31 01:04:39,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 501 transitions, 9045 flow, removed 20 selfloop flow, removed 17 redundant places. [2023-08-31 01:04:39,266 INFO L231 Difference]: Finished difference. Result has 298 places, 401 transitions, 8347 flow [2023-08-31 01:04:39,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6682, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8347, PETRI_PLACES=298, PETRI_TRANSITIONS=401} [2023-08-31 01:04:39,267 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2023-08-31 01:04:39,267 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 401 transitions, 8347 flow [2023-08-31 01:04:39,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:39,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:39,268 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:39,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-31 01:04:39,268 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:39,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1176697371, now seen corresponding path program 11 times [2023-08-31 01:04:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751518248] [2023-08-31 01:04:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:39,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:39,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:39,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751518248] [2023-08-31 01:04:39,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751518248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:39,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:39,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35565542] [2023-08-31 01:04:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:40,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:40,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 401 transitions, 8347 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:40,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:40,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:40,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:41,331 INFO L130 PetriNetUnfolder]: 1612/2952 cut-off events. [2023-08-31 01:04:41,332 INFO L131 PetriNetUnfolder]: For 44066/44066 co-relation queries the response was YES. [2023-08-31 01:04:41,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22745 conditions, 2952 events. 1612/2952 cut-off events. For 44066/44066 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18027 event pairs, 136 based on Foata normal form. 1/2953 useless extension candidates. Maximal degree in co-relation 22591. Up to 735 conditions per place. [2023-08-31 01:04:41,351 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 251 selfloop transitions, 240 changer transitions 2/493 dead transitions. [2023-08-31 01:04:41,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 493 transitions, 10313 flow [2023-08-31 01:04:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 01:04:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 01:04:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3074 transitions. [2023-08-31 01:04:41,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946084724005135 [2023-08-31 01:04:41,354 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3074 transitions. [2023-08-31 01:04:41,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3074 transitions. [2023-08-31 01:04:41,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:41,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3074 transitions. [2023-08-31 01:04:41,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 161.78947368421052) internal successors, (3074), 19 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:41,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:41,359 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:41,359 INFO L175 Difference]: Start difference. First operand has 298 places, 401 transitions, 8347 flow. Second operand 19 states and 3074 transitions. [2023-08-31 01:04:41,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 493 transitions, 10313 flow [2023-08-31 01:04:41,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 493 transitions, 9984 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-08-31 01:04:41,522 INFO L231 Difference]: Finished difference. Result has 311 places, 424 transitions, 9155 flow [2023-08-31 01:04:41,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8046, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9155, PETRI_PLACES=311, PETRI_TRANSITIONS=424} [2023-08-31 01:04:41,522 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 285 predicate places. [2023-08-31 01:04:41,523 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 424 transitions, 9155 flow [2023-08-31 01:04:41,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:41,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:41,523 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-31 01:04:41,523 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:41,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 195493989, now seen corresponding path program 12 times [2023-08-31 01:04:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213877861] [2023-08-31 01:04:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213877861] [2023-08-31 01:04:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213877861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:41,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:41,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505943752] [2023-08-31 01:04:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:42,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 410 [2023-08-31 01:04:42,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 424 transitions, 9155 flow. Second operand has 13 states, 13 states have (on average 153.6153846153846) internal successors, (1997), 13 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:42,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:42,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 410 [2023-08-31 01:04:42,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:43,375 INFO L130 PetriNetUnfolder]: 1585/2910 cut-off events. [2023-08-31 01:04:43,375 INFO L131 PetriNetUnfolder]: For 46361/46361 co-relation queries the response was YES. [2023-08-31 01:04:43,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22851 conditions, 2910 events. 1585/2910 cut-off events. For 46361/46361 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17842 event pairs, 190 based on Foata normal form. 14/2924 useless extension candidates. Maximal degree in co-relation 22694. Up to 810 conditions per place. [2023-08-31 01:04:43,405 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 229 selfloop transitions, 251 changer transitions 9/489 dead transitions. [2023-08-31 01:04:43,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 489 transitions, 10419 flow [2023-08-31 01:04:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:04:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:04:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3513 transitions. [2023-08-31 01:04:43,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894678492239468 [2023-08-31 01:04:43,408 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3513 transitions. [2023-08-31 01:04:43,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3513 transitions. [2023-08-31 01:04:43,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:43,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3513 transitions. [2023-08-31 01:04:43,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 159.6818181818182) internal successors, (3513), 22 states have internal predecessors, (3513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:43,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:43,414 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:43,414 INFO L175 Difference]: Start difference. First operand has 311 places, 424 transitions, 9155 flow. Second operand 22 states and 3513 transitions. [2023-08-31 01:04:43,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 489 transitions, 10419 flow [2023-08-31 01:04:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 489 transitions, 10170 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-31 01:04:43,635 INFO L231 Difference]: Finished difference. Result has 325 places, 416 transitions, 9295 flow [2023-08-31 01:04:43,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8851, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9295, PETRI_PLACES=325, PETRI_TRANSITIONS=416} [2023-08-31 01:04:43,637 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 299 predicate places. [2023-08-31 01:04:43,637 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 416 transitions, 9295 flow [2023-08-31 01:04:43,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 153.6153846153846) internal successors, (1997), 13 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:43,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:43,639 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:43,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-31 01:04:43,639 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:43,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash -204890007, now seen corresponding path program 13 times [2023-08-31 01:04:43,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:43,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820255448] [2023-08-31 01:04:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:44,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820255448] [2023-08-31 01:04:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820255448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:44,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:44,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369440485] [2023-08-31 01:04:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:44,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:44,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:44,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:44,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 416 transitions, 9295 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:44,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:44,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:44,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:45,400 INFO L130 PetriNetUnfolder]: 1583/2905 cut-off events. [2023-08-31 01:04:45,400 INFO L131 PetriNetUnfolder]: For 48230/48230 co-relation queries the response was YES. [2023-08-31 01:04:45,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23217 conditions, 2905 events. 1583/2905 cut-off events. For 48230/48230 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17662 event pairs, 115 based on Foata normal form. 3/2908 useless extension candidates. Maximal degree in co-relation 23059. Up to 735 conditions per place. [2023-08-31 01:04:45,424 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 212 selfloop transitions, 270 changer transitions 5/487 dead transitions. [2023-08-31 01:04:45,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 487 transitions, 10805 flow [2023-08-31 01:04:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:04:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:04:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3544 transitions. [2023-08-31 01:04:45,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39290465631929045 [2023-08-31 01:04:45,442 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3544 transitions. [2023-08-31 01:04:45,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3544 transitions. [2023-08-31 01:04:45,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:45,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3544 transitions. [2023-08-31 01:04:45,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 161.0909090909091) internal successors, (3544), 22 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:45,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:45,454 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:45,454 INFO L175 Difference]: Start difference. First operand has 325 places, 416 transitions, 9295 flow. Second operand 22 states and 3544 transitions. [2023-08-31 01:04:45,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 487 transitions, 10805 flow [2023-08-31 01:04:45,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 487 transitions, 10273 flow, removed 15 selfloop flow, removed 19 redundant places. [2023-08-31 01:04:45,671 INFO L231 Difference]: Finished difference. Result has 327 places, 421 transitions, 9474 flow [2023-08-31 01:04:45,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8789, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9474, PETRI_PLACES=327, PETRI_TRANSITIONS=421} [2023-08-31 01:04:45,671 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 301 predicate places. [2023-08-31 01:04:45,671 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 421 transitions, 9474 flow [2023-08-31 01:04:45,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:45,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:45,672 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:45,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-31 01:04:45,672 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:45,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 314959577, now seen corresponding path program 14 times [2023-08-31 01:04:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945799849] [2023-08-31 01:04:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:46,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:46,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945799849] [2023-08-31 01:04:46,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945799849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:46,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:46,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:46,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195050416] [2023-08-31 01:04:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:46,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:46,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:46,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:46,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 421 transitions, 9474 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:46,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:46,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:47,357 INFO L130 PetriNetUnfolder]: 1580/2894 cut-off events. [2023-08-31 01:04:47,357 INFO L131 PetriNetUnfolder]: For 47247/47247 co-relation queries the response was YES. [2023-08-31 01:04:47,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 2894 events. 1580/2894 cut-off events. For 47247/47247 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17550 event pairs, 212 based on Foata normal form. 3/2897 useless extension candidates. Maximal degree in co-relation 23043. Up to 1103 conditions per place. [2023-08-31 01:04:47,387 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 292 selfloop transitions, 161 changer transitions 13/466 dead transitions. [2023-08-31 01:04:47,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 466 transitions, 10657 flow [2023-08-31 01:04:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:04:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:04:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2265 transitions. [2023-08-31 01:04:47,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945993031358885 [2023-08-31 01:04:47,389 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2265 transitions. [2023-08-31 01:04:47,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2265 transitions. [2023-08-31 01:04:47,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:47,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2265 transitions. [2023-08-31 01:04:47,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 161.78571428571428) internal successors, (2265), 14 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:47,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:47,395 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:47,395 INFO L175 Difference]: Start difference. First operand has 327 places, 421 transitions, 9474 flow. Second operand 14 states and 2265 transitions. [2023-08-31 01:04:47,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 466 transitions, 10657 flow [2023-08-31 01:04:47,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 466 transitions, 10137 flow, removed 5 selfloop flow, removed 19 redundant places. [2023-08-31 01:04:47,612 INFO L231 Difference]: Finished difference. Result has 324 places, 419 transitions, 9234 flow [2023-08-31 01:04:47,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8962, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9234, PETRI_PLACES=324, PETRI_TRANSITIONS=419} [2023-08-31 01:04:47,613 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 298 predicate places. [2023-08-31 01:04:47,613 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 419 transitions, 9234 flow [2023-08-31 01:04:47,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:47,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:47,614 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-31 01:04:47,614 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:47,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1133666139, now seen corresponding path program 15 times [2023-08-31 01:04:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:47,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797625814] [2023-08-31 01:04:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:04:48,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797625814] [2023-08-31 01:04:48,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797625814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834306121] [2023-08-31 01:04:48,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:04:48,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:48,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:48,305 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:48,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-31 01:04:48,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:04:48,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:04:48,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:04:48,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:48,788 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 01:04:48,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-31 01:04:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:48,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:04:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834306121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:48,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:04:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 27 [2023-08-31 01:04:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762415135] [2023-08-31 01:04:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2023-08-31 01:04:49,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:49,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 419 transitions, 9234 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:49,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:49,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:49,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:49,987 INFO L130 PetriNetUnfolder]: 1583/2899 cut-off events. [2023-08-31 01:04:49,987 INFO L131 PetriNetUnfolder]: For 47173/47173 co-relation queries the response was YES. [2023-08-31 01:04:50,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23043 conditions, 2899 events. 1583/2899 cut-off events. For 47173/47173 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17648 event pairs, 214 based on Foata normal form. 3/2902 useless extension candidates. Maximal degree in co-relation 22883. Up to 1487 conditions per place. [2023-08-31 01:04:50,014 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 311 selfloop transitions, 136 changer transitions 10/457 dead transitions. [2023-08-31 01:04:50,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 457 transitions, 10481 flow [2023-08-31 01:04:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:04:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:04:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1937 transitions. [2023-08-31 01:04:50,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936991869918699 [2023-08-31 01:04:50,016 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1937 transitions. [2023-08-31 01:04:50,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1937 transitions. [2023-08-31 01:04:50,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:50,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1937 transitions. [2023-08-31 01:04:50,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 161.41666666666666) internal successors, (1937), 12 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:50,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:50,020 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:50,021 INFO L175 Difference]: Start difference. First operand has 324 places, 419 transitions, 9234 flow. Second operand 12 states and 1937 transitions. [2023-08-31 01:04:50,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 457 transitions, 10481 flow [2023-08-31 01:04:50,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 457 transitions, 10139 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-31 01:04:50,213 INFO L231 Difference]: Finished difference. Result has 321 places, 422 transitions, 9277 flow [2023-08-31 01:04:50,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8904, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9277, PETRI_PLACES=321, PETRI_TRANSITIONS=422} [2023-08-31 01:04:50,222 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 295 predicate places. [2023-08-31 01:04:50,222 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 422 transitions, 9277 flow [2023-08-31 01:04:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:50,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:50,223 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:50,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-31 01:04:50,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-31 01:04:50,428 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:50,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash -821144427, now seen corresponding path program 16 times [2023-08-31 01:04:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605236732] [2023-08-31 01:04:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:50,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:50,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605236732] [2023-08-31 01:04:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605236732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:50,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:50,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:04:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570188207] [2023-08-31 01:04:50,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:50,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:04:50,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:50,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:04:50,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:04:51,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:04:51,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 422 transitions, 9277 flow. Second operand has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:51,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:51,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:04:51,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:52,244 INFO L130 PetriNetUnfolder]: 1579/2882 cut-off events. [2023-08-31 01:04:52,245 INFO L131 PetriNetUnfolder]: For 47057/47057 co-relation queries the response was YES. [2023-08-31 01:04:52,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22877 conditions, 2882 events. 1579/2882 cut-off events. For 47057/47057 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17435 event pairs, 113 based on Foata normal form. 2/2884 useless extension candidates. Maximal degree in co-relation 22717. Up to 735 conditions per place. [2023-08-31 01:04:52,270 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 231 changer transitions 5/483 dead transitions. [2023-08-31 01:04:52,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 10605 flow [2023-08-31 01:04:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 01:04:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 01:04:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2734 transitions. [2023-08-31 01:04:52,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39225251076040174 [2023-08-31 01:04:52,272 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2734 transitions. [2023-08-31 01:04:52,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2734 transitions. [2023-08-31 01:04:52,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:52,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2734 transitions. [2023-08-31 01:04:52,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 160.8235294117647) internal successors, (2734), 17 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:52,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:52,278 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:52,279 INFO L175 Difference]: Start difference. First operand has 321 places, 422 transitions, 9277 flow. Second operand 17 states and 2734 transitions. [2023-08-31 01:04:52,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 10605 flow [2023-08-31 01:04:52,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 483 transitions, 10376 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-31 01:04:52,481 INFO L231 Difference]: Finished difference. Result has 328 places, 421 transitions, 9501 flow [2023-08-31 01:04:52,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9054, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9501, PETRI_PLACES=328, PETRI_TRANSITIONS=421} [2023-08-31 01:04:52,483 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 302 predicate places. [2023-08-31 01:04:52,483 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 421 transitions, 9501 flow [2023-08-31 01:04:52,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:52,484 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:52,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-31 01:04:52,484 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:52,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1523939993, now seen corresponding path program 17 times [2023-08-31 01:04:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081694739] [2023-08-31 01:04:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:53,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:53,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081694739] [2023-08-31 01:04:53,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081694739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:53,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:53,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 01:04:53,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888153662] [2023-08-31 01:04:53,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:53,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 01:04:53,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:53,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 01:04:53,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:04:53,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 410 [2023-08-31 01:04:53,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 421 transitions, 9501 flow. Second operand has 14 states, 14 states have (on average 152.5) internal successors, (2135), 14 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:53,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:53,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 410 [2023-08-31 01:04:53,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:55,005 INFO L130 PetriNetUnfolder]: 1650/3011 cut-off events. [2023-08-31 01:04:55,006 INFO L131 PetriNetUnfolder]: For 52243/52243 co-relation queries the response was YES. [2023-08-31 01:04:55,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23982 conditions, 3011 events. 1650/3011 cut-off events. For 52243/52243 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18530 event pairs, 109 based on Foata normal form. 32/3043 useless extension candidates. Maximal degree in co-relation 23824. Up to 1449 conditions per place. [2023-08-31 01:04:55,028 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 295 selfloop transitions, 232 changer transitions 7/534 dead transitions. [2023-08-31 01:04:55,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 534 transitions, 11945 flow [2023-08-31 01:04:55,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 01:04:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 01:04:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3017 transitions. [2023-08-31 01:04:55,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872913992297818 [2023-08-31 01:04:55,031 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3017 transitions. [2023-08-31 01:04:55,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3017 transitions. [2023-08-31 01:04:55,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:55,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3017 transitions. [2023-08-31 01:04:55,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 158.78947368421052) internal successors, (3017), 19 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:55,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:55,037 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:55,037 INFO L175 Difference]: Start difference. First operand has 328 places, 421 transitions, 9501 flow. Second operand 19 states and 3017 transitions. [2023-08-31 01:04:55,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 534 transitions, 11945 flow [2023-08-31 01:04:55,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 534 transitions, 11311 flow, removed 4 selfloop flow, removed 20 redundant places. [2023-08-31 01:04:55,238 INFO L231 Difference]: Finished difference. Result has 332 places, 452 transitions, 10277 flow [2023-08-31 01:04:55,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8866, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10277, PETRI_PLACES=332, PETRI_TRANSITIONS=452} [2023-08-31 01:04:55,239 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 306 predicate places. [2023-08-31 01:04:55,239 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 452 transitions, 10277 flow [2023-08-31 01:04:55,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 152.5) internal successors, (2135), 14 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:55,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:55,239 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:55,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-31 01:04:55,240 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:55,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2078706087, now seen corresponding path program 18 times [2023-08-31 01:04:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:55,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122922153] [2023-08-31 01:04:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:04:56,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:56,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122922153] [2023-08-31 01:04:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122922153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:56,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893217820] [2023-08-31 01:04:56,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:04:56,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:56,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:56,005 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:56,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-31 01:04:56,187 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 01:04:56,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:04:56,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-31 01:04:56,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:56,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:04:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:04:56,512 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:04:56,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-08-31 01:04:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:56,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:04:56,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893217820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:56,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:04:56,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 26 [2023-08-31 01:04:56,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334219052] [2023-08-31 01:04:56,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:56,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:56,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:56,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-08-31 01:04:57,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 410 [2023-08-31 01:04:57,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 452 transitions, 10277 flow. Second operand has 12 states, 12 states have (on average 153.75) internal successors, (1845), 12 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:57,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:57,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 410 [2023-08-31 01:04:57,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:58,157 INFO L130 PetriNetUnfolder]: 1764/3177 cut-off events. [2023-08-31 01:04:58,158 INFO L131 PetriNetUnfolder]: For 52025/52025 co-relation queries the response was YES. [2023-08-31 01:04:58,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25471 conditions, 3177 events. 1764/3177 cut-off events. For 52025/52025 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19356 event pairs, 184 based on Foata normal form. 5/3182 useless extension candidates. Maximal degree in co-relation 25309. Up to 1545 conditions per place. [2023-08-31 01:04:58,181 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 309 selfloop transitions, 186 changer transitions 11/506 dead transitions. [2023-08-31 01:04:58,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 506 transitions, 11736 flow [2023-08-31 01:04:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:04:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:04:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1613 transitions. [2023-08-31 01:04:58,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934146341463415 [2023-08-31 01:04:58,184 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1613 transitions. [2023-08-31 01:04:58,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1613 transitions. [2023-08-31 01:04:58,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:58,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1613 transitions. [2023-08-31 01:04:58,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.3) internal successors, (1613), 10 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:58,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:58,187 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:58,187 INFO L175 Difference]: Start difference. First operand has 332 places, 452 transitions, 10277 flow. Second operand 10 states and 1613 transitions. [2023-08-31 01:04:58,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 506 transitions, 11736 flow [2023-08-31 01:04:58,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 506 transitions, 11372 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-31 01:04:58,408 INFO L231 Difference]: Finished difference. Result has 334 places, 456 transitions, 10436 flow [2023-08-31 01:04:58,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10436, PETRI_PLACES=334, PETRI_TRANSITIONS=456} [2023-08-31 01:04:58,409 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2023-08-31 01:04:58,409 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 456 transitions, 10436 flow [2023-08-31 01:04:58,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.75) internal successors, (1845), 12 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:58,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:58,410 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:04:58,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-31 01:04:58,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:58,616 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:04:58,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1296520111, now seen corresponding path program 19 times [2023-08-31 01:04:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379987627] [2023-08-31 01:04:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:04:58,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:58,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379987627] [2023-08-31 01:04:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379987627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:58,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:58,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:04:58,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570821944] [2023-08-31 01:04:58,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:58,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:04:58,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:04:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:04:59,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:04:59,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 456 transitions, 10436 flow. Second operand has 12 states, 12 states have (on average 155.75) internal successors, (1869), 12 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:59,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:59,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:04:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:00,257 INFO L130 PetriNetUnfolder]: 1760/3173 cut-off events. [2023-08-31 01:05:00,257 INFO L131 PetriNetUnfolder]: For 54282/54282 co-relation queries the response was YES. [2023-08-31 01:05:00,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25677 conditions, 3173 events. 1760/3173 cut-off events. For 54282/54282 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19319 event pairs, 124 based on Foata normal form. 1/3174 useless extension candidates. Maximal degree in co-relation 25515. Up to 706 conditions per place. [2023-08-31 01:05:00,289 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 234 selfloop transitions, 307 changer transitions 5/546 dead transitions. [2023-08-31 01:05:00,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 546 transitions, 12286 flow [2023-08-31 01:05:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 01:05:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 01:05:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3077 transitions. [2023-08-31 01:05:00,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949935815147625 [2023-08-31 01:05:00,292 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3077 transitions. [2023-08-31 01:05:00,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3077 transitions. [2023-08-31 01:05:00,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:00,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3077 transitions. [2023-08-31 01:05:00,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 161.94736842105263) internal successors, (3077), 19 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:00,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:00,298 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:00,298 INFO L175 Difference]: Start difference. First operand has 334 places, 456 transitions, 10436 flow. Second operand 19 states and 3077 transitions. [2023-08-31 01:05:00,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 546 transitions, 12286 flow [2023-08-31 01:05:00,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 546 transitions, 11938 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-31 01:05:00,544 INFO L231 Difference]: Finished difference. Result has 345 places, 474 transitions, 11062 flow [2023-08-31 01:05:00,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10107, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11062, PETRI_PLACES=345, PETRI_TRANSITIONS=474} [2023-08-31 01:05:00,545 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 319 predicate places. [2023-08-31 01:05:00,545 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 474 transitions, 11062 flow [2023-08-31 01:05:00,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.75) internal successors, (1869), 12 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:00,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:00,546 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:00,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-31 01:05:00,546 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:00,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -305542235, now seen corresponding path program 20 times [2023-08-31 01:05:00,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:00,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606499887] [2023-08-31 01:05:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:00,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606499887] [2023-08-31 01:05:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606499887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:01,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:01,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 01:05:01,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506065951] [2023-08-31 01:05:01,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:01,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 01:05:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 01:05:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:05:01,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 410 [2023-08-31 01:05:01,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 474 transitions, 11062 flow. Second operand has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:01,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:01,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 410 [2023-08-31 01:05:01,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:03,193 INFO L130 PetriNetUnfolder]: 1944/3545 cut-off events. [2023-08-31 01:05:03,193 INFO L131 PetriNetUnfolder]: For 63937/63937 co-relation queries the response was YES. [2023-08-31 01:05:03,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28690 conditions, 3545 events. 1944/3545 cut-off events. For 63937/63937 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 22452 event pairs, 170 based on Foata normal form. 5/3550 useless extension candidates. Maximal degree in co-relation 28526. Up to 598 conditions per place. [2023-08-31 01:05:03,220 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 288 selfloop transitions, 369 changer transitions 8/665 dead transitions. [2023-08-31 01:05:03,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 665 transitions, 14359 flow [2023-08-31 01:05:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-31 01:05:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-31 01:05:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4069 transitions. [2023-08-31 01:05:03,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38170731707317074 [2023-08-31 01:05:03,223 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4069 transitions. [2023-08-31 01:05:03,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4069 transitions. [2023-08-31 01:05:03,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:03,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4069 transitions. [2023-08-31 01:05:03,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 156.5) internal successors, (4069), 26 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:03,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:03,230 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:03,231 INFO L175 Difference]: Start difference. First operand has 345 places, 474 transitions, 11062 flow. Second operand 26 states and 4069 transitions. [2023-08-31 01:05:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 665 transitions, 14359 flow [2023-08-31 01:05:03,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 665 transitions, 13941 flow, removed 57 selfloop flow, removed 8 redundant places. [2023-08-31 01:05:03,495 INFO L231 Difference]: Finished difference. Result has 372 places, 513 transitions, 12575 flow [2023-08-31 01:05:03,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10746, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12575, PETRI_PLACES=372, PETRI_TRANSITIONS=513} [2023-08-31 01:05:03,495 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2023-08-31 01:05:03,495 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 513 transitions, 12575 flow [2023-08-31 01:05:03,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:03,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:03,496 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:03,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-31 01:05:03,496 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:03,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash 830388595, now seen corresponding path program 21 times [2023-08-31 01:05:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:03,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930841025] [2023-08-31 01:05:03,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:03,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:03,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:03,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930841025] [2023-08-31 01:05:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930841025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:03,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:03,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 01:05:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626590504] [2023-08-31 01:05:03,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:03,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 01:05:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 01:05:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:05:04,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 410 [2023-08-31 01:05:04,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 513 transitions, 12575 flow. Second operand has 14 states, 14 states have (on average 150.5) internal successors, (2107), 14 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:04,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:04,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 410 [2023-08-31 01:05:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:06,383 INFO L130 PetriNetUnfolder]: 1945/3548 cut-off events. [2023-08-31 01:05:06,384 INFO L131 PetriNetUnfolder]: For 69196/69196 co-relation queries the response was YES. [2023-08-31 01:05:06,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30014 conditions, 3548 events. 1945/3548 cut-off events. For 69196/69196 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22491 event pairs, 154 based on Foata normal form. 2/3550 useless extension candidates. Maximal degree in co-relation 29839. Up to 781 conditions per place. [2023-08-31 01:05:06,419 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 243 selfloop transitions, 352 changer transitions 7/602 dead transitions. [2023-08-31 01:05:06,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 602 transitions, 14358 flow [2023-08-31 01:05:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:05:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:05:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3438 transitions. [2023-08-31 01:05:06,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3811529933481153 [2023-08-31 01:05:06,422 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3438 transitions. [2023-08-31 01:05:06,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3438 transitions. [2023-08-31 01:05:06,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:06,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3438 transitions. [2023-08-31 01:05:06,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 156.27272727272728) internal successors, (3438), 22 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:06,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:06,428 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:06,428 INFO L175 Difference]: Start difference. First operand has 372 places, 513 transitions, 12575 flow. Second operand 22 states and 3438 transitions. [2023-08-31 01:05:06,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 602 transitions, 14358 flow [2023-08-31 01:05:06,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 602 transitions, 13772 flow, removed 87 selfloop flow, removed 13 redundant places. [2023-08-31 01:05:06,774 INFO L231 Difference]: Finished difference. Result has 381 places, 513 transitions, 12805 flow [2023-08-31 01:05:06,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12019, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12805, PETRI_PLACES=381, PETRI_TRANSITIONS=513} [2023-08-31 01:05:06,775 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-08-31 01:05:06,775 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 513 transitions, 12805 flow [2023-08-31 01:05:06,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 150.5) internal successors, (2107), 14 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:06,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:06,775 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:06,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-31 01:05:06,775 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:06,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash 327894257, now seen corresponding path program 22 times [2023-08-31 01:05:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:06,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739811274] [2023-08-31 01:05:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739811274] [2023-08-31 01:05:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739811274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:07,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:07,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:05:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007199286] [2023-08-31 01:05:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:05:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:07,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:05:07,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:05:08,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 410 [2023-08-31 01:05:08,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 513 transitions, 12805 flow. Second operand has 13 states, 13 states have (on average 150.6153846153846) internal successors, (1958), 13 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:08,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:08,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 410 [2023-08-31 01:05:08,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:09,454 INFO L130 PetriNetUnfolder]: 1917/3510 cut-off events. [2023-08-31 01:05:09,455 INFO L131 PetriNetUnfolder]: For 75113/75113 co-relation queries the response was YES. [2023-08-31 01:05:09,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29738 conditions, 3510 events. 1917/3510 cut-off events. For 75113/75113 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22293 event pairs, 252 based on Foata normal form. 14/3524 useless extension candidates. Maximal degree in co-relation 29566. Up to 1344 conditions per place. [2023-08-31 01:05:09,484 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 308 selfloop transitions, 254 changer transitions 9/571 dead transitions. [2023-08-31 01:05:09,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 571 transitions, 14231 flow [2023-08-31 01:05:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 01:05:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 01:05:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2811 transitions. [2023-08-31 01:05:09,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38089430894308945 [2023-08-31 01:05:09,486 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2811 transitions. [2023-08-31 01:05:09,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2811 transitions. [2023-08-31 01:05:09,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:09,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2811 transitions. [2023-08-31 01:05:09,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 156.16666666666666) internal successors, (2811), 18 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:09,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:09,491 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:09,491 INFO L175 Difference]: Start difference. First operand has 381 places, 513 transitions, 12805 flow. Second operand 18 states and 2811 transitions. [2023-08-31 01:05:09,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 571 transitions, 14231 flow [2023-08-31 01:05:09,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 571 transitions, 13653 flow, removed 6 selfloop flow, removed 18 redundant places. [2023-08-31 01:05:09,815 INFO L231 Difference]: Finished difference. Result has 381 places, 509 transitions, 12701 flow [2023-08-31 01:05:09,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12168, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12701, PETRI_PLACES=381, PETRI_TRANSITIONS=509} [2023-08-31 01:05:09,816 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-08-31 01:05:09,816 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 509 transitions, 12701 flow [2023-08-31 01:05:09,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 150.6153846153846) internal successors, (1958), 13 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:09,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:09,817 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:09,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-31 01:05:09,817 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:09,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash 411107351, now seen corresponding path program 23 times [2023-08-31 01:05:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:09,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366329097] [2023-08-31 01:05:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:10,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:10,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366329097] [2023-08-31 01:05:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366329097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:10,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:05:10,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321159531] [2023-08-31 01:05:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:10,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:05:10,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:05:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:05:10,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:05:10,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 509 transitions, 12701 flow. Second operand has 11 states, 11 states have (on average 157.9090909090909) internal successors, (1737), 11 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:10,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:10,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:05:10,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:11,419 INFO L130 PetriNetUnfolder]: 1908/3478 cut-off events. [2023-08-31 01:05:11,420 INFO L131 PetriNetUnfolder]: For 73883/73883 co-relation queries the response was YES. [2023-08-31 01:05:11,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29632 conditions, 3478 events. 1908/3478 cut-off events. For 73883/73883 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21827 event pairs, 134 based on Foata normal form. 1/3479 useless extension candidates. Maximal degree in co-relation 29459. Up to 937 conditions per place. [2023-08-31 01:05:11,457 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 247 selfloop transitions, 305 changer transitions 6/558 dead transitions. [2023-08-31 01:05:11,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 558 transitions, 14154 flow [2023-08-31 01:05:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:05:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:05:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2292 transitions. [2023-08-31 01:05:11,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39930313588850175 [2023-08-31 01:05:11,459 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2292 transitions. [2023-08-31 01:05:11,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2292 transitions. [2023-08-31 01:05:11,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:11,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2292 transitions. [2023-08-31 01:05:11,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 163.71428571428572) internal successors, (2292), 14 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:11,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:11,463 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:11,463 INFO L175 Difference]: Start difference. First operand has 381 places, 509 transitions, 12701 flow. Second operand 14 states and 2292 transitions. [2023-08-31 01:05:11,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 558 transitions, 14154 flow [2023-08-31 01:05:11,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 558 transitions, 13748 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-08-31 01:05:11,849 INFO L231 Difference]: Finished difference. Result has 381 places, 511 transitions, 13058 flow [2023-08-31 01:05:11,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12301, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13058, PETRI_PLACES=381, PETRI_TRANSITIONS=511} [2023-08-31 01:05:11,850 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-08-31 01:05:11,850 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 511 transitions, 13058 flow [2023-08-31 01:05:11,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 157.9090909090909) internal successors, (1737), 11 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:11,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:11,851 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:11,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-31 01:05:11,851 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:11,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2039877833, now seen corresponding path program 24 times [2023-08-31 01:05:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:11,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800315986] [2023-08-31 01:05:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800315986] [2023-08-31 01:05:12,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800315986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:12,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:12,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:05:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412140979] [2023-08-31 01:05:12,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:12,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:05:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:05:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:05:12,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:05:12,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 511 transitions, 13058 flow. Second operand has 12 states, 12 states have (on average 155.75) internal successors, (1869), 12 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:12,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:12,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:05:12,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:13,884 INFO L130 PetriNetUnfolder]: 1910/3484 cut-off events. [2023-08-31 01:05:13,884 INFO L131 PetriNetUnfolder]: For 75641/75641 co-relation queries the response was YES. [2023-08-31 01:05:13,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30108 conditions, 3484 events. 1910/3484 cut-off events. For 75641/75641 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21909 event pairs, 119 based on Foata normal form. 1/3485 useless extension candidates. Maximal degree in co-relation 29934. Up to 777 conditions per place. [2023-08-31 01:05:13,917 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 337 changer transitions 5/589 dead transitions. [2023-08-31 01:05:13,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 589 transitions, 14776 flow [2023-08-31 01:05:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 01:05:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 01:05:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3086 transitions. [2023-08-31 01:05:13,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39614890885750964 [2023-08-31 01:05:13,920 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3086 transitions. [2023-08-31 01:05:13,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3086 transitions. [2023-08-31 01:05:13,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:13,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3086 transitions. [2023-08-31 01:05:13,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 162.42105263157896) internal successors, (3086), 19 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:13,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:13,925 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:13,925 INFO L175 Difference]: Start difference. First operand has 381 places, 511 transitions, 13058 flow. Second operand 19 states and 3086 transitions. [2023-08-31 01:05:13,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 589 transitions, 14776 flow [2023-08-31 01:05:14,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 589 transitions, 14339 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-08-31 01:05:14,261 INFO L231 Difference]: Finished difference. Result has 392 places, 514 transitions, 13401 flow [2023-08-31 01:05:14,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12632, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13401, PETRI_PLACES=392, PETRI_TRANSITIONS=514} [2023-08-31 01:05:14,261 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 366 predicate places. [2023-08-31 01:05:14,262 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 514 transitions, 13401 flow [2023-08-31 01:05:14,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.75) internal successors, (1869), 12 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:14,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:14,262 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-31 01:05:14,262 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:14,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash -197376943, now seen corresponding path program 25 times [2023-08-31 01:05:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:14,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961560471] [2023-08-31 01:05:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:14,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:14,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961560471] [2023-08-31 01:05:14,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961560471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:14,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:05:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373765825] [2023-08-31 01:05:14,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:14,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:05:14,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:05:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:05:15,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 410 [2023-08-31 01:05:15,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 514 transitions, 13401 flow. Second operand has 13 states, 13 states have (on average 152.6153846153846) internal successors, (1984), 13 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:15,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:15,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 410 [2023-08-31 01:05:15,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:16,392 INFO L130 PetriNetUnfolder]: 1909/3477 cut-off events. [2023-08-31 01:05:16,392 INFO L131 PetriNetUnfolder]: For 78157/78157 co-relation queries the response was YES. [2023-08-31 01:05:16,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30636 conditions, 3477 events. 1909/3477 cut-off events. For 78157/78157 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21812 event pairs, 136 based on Foata normal form. 1/3478 useless extension candidates. Maximal degree in co-relation 30461. Up to 937 conditions per place. [2023-08-31 01:05:16,426 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 233 selfloop transitions, 326 changer transitions 6/565 dead transitions. [2023-08-31 01:05:16,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 565 transitions, 14816 flow [2023-08-31 01:05:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 01:05:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 01:05:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2680 transitions. [2023-08-31 01:05:16,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38450502152080346 [2023-08-31 01:05:16,429 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2680 transitions. [2023-08-31 01:05:16,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2680 transitions. [2023-08-31 01:05:16,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:16,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2680 transitions. [2023-08-31 01:05:16,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.64705882352942) internal successors, (2680), 17 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:16,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:16,434 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:16,434 INFO L175 Difference]: Start difference. First operand has 392 places, 514 transitions, 13401 flow. Second operand 17 states and 2680 transitions. [2023-08-31 01:05:16,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 565 transitions, 14816 flow [2023-08-31 01:05:16,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 565 transitions, 14215 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-08-31 01:05:16,775 INFO L231 Difference]: Finished difference. Result has 394 places, 514 transitions, 13487 flow [2023-08-31 01:05:16,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12806, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13487, PETRI_PLACES=394, PETRI_TRANSITIONS=514} [2023-08-31 01:05:16,776 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 368 predicate places. [2023-08-31 01:05:16,776 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 514 transitions, 13487 flow [2023-08-31 01:05:16,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 152.6153846153846) internal successors, (1984), 13 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:16,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:16,776 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:16,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-31 01:05:16,777 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:16,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash -896136115, now seen corresponding path program 26 times [2023-08-31 01:05:16,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:16,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468790202] [2023-08-31 01:05:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:17,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468790202] [2023-08-31 01:05:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468790202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:17,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:05:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418924495] [2023-08-31 01:05:17,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:17,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:05:17,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:05:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:05:17,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:05:17,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 514 transitions, 13487 flow. Second operand has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:17,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:17,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:05:17,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:18,730 INFO L130 PetriNetUnfolder]: 1972/3597 cut-off events. [2023-08-31 01:05:18,730 INFO L131 PetriNetUnfolder]: For 77607/77607 co-relation queries the response was YES. [2023-08-31 01:05:18,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31571 conditions, 3597 events. 1972/3597 cut-off events. For 77607/77607 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22759 event pairs, 203 based on Foata normal form. 4/3601 useless extension candidates. Maximal degree in co-relation 31396. Up to 1102 conditions per place. [2023-08-31 01:05:18,769 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 390 selfloop transitions, 221 changer transitions 7/618 dead transitions. [2023-08-31 01:05:18,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 618 transitions, 15610 flow [2023-08-31 01:05:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:05:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:05:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3534 transitions. [2023-08-31 01:05:18,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3917960088691796 [2023-08-31 01:05:18,772 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3534 transitions. [2023-08-31 01:05:18,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3534 transitions. [2023-08-31 01:05:18,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:18,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3534 transitions. [2023-08-31 01:05:18,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 160.63636363636363) internal successors, (3534), 22 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:18,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:18,778 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:18,778 INFO L175 Difference]: Start difference. First operand has 394 places, 514 transitions, 13487 flow. Second operand 22 states and 3534 transitions. [2023-08-31 01:05:18,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 618 transitions, 15610 flow [2023-08-31 01:05:19,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 618 transitions, 14912 flow, removed 5 selfloop flow, removed 15 redundant places. [2023-08-31 01:05:19,208 INFO L231 Difference]: Finished difference. Result has 404 places, 526 transitions, 13670 flow [2023-08-31 01:05:19,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12821, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=13670, PETRI_PLACES=404, PETRI_TRANSITIONS=526} [2023-08-31 01:05:19,209 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 378 predicate places. [2023-08-31 01:05:19,209 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 526 transitions, 13670 flow [2023-08-31 01:05:19,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 154.6153846153846) internal successors, (2010), 13 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:19,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:19,209 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:19,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-31 01:05:19,210 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:19,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash 424796825, now seen corresponding path program 27 times [2023-08-31 01:05:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:19,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942614895] [2023-08-31 01:05:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:19,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942614895] [2023-08-31 01:05:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942614895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:19,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:19,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:05:19,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134617773] [2023-08-31 01:05:19,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:19,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:05:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:19,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:05:19,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:05:19,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:05:19,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 526 transitions, 13670 flow. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:19,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:19,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:05:19,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:21,112 INFO L130 PetriNetUnfolder]: 1976/3609 cut-off events. [2023-08-31 01:05:21,112 INFO L131 PetriNetUnfolder]: For 78647/78647 co-relation queries the response was YES. [2023-08-31 01:05:21,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32146 conditions, 3609 events. 1976/3609 cut-off events. For 78647/78647 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22865 event pairs, 179 based on Foata normal form. 1/3610 useless extension candidates. Maximal degree in co-relation 31967. Up to 1195 conditions per place. [2023-08-31 01:05:21,147 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 372 selfloop transitions, 223 changer transitions 5/600 dead transitions. [2023-08-31 01:05:21,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 600 transitions, 15349 flow [2023-08-31 01:05:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-31 01:05:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-31 01:05:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3384 transitions. [2023-08-31 01:05:21,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39303135888501745 [2023-08-31 01:05:21,150 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3384 transitions. [2023-08-31 01:05:21,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3384 transitions. [2023-08-31 01:05:21,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:21,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3384 transitions. [2023-08-31 01:05:21,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 161.14285714285714) internal successors, (3384), 21 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:21,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:21,156 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:21,156 INFO L175 Difference]: Start difference. First operand has 404 places, 526 transitions, 13670 flow. Second operand 21 states and 3384 transitions. [2023-08-31 01:05:21,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 600 transitions, 15349 flow [2023-08-31 01:05:21,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 600 transitions, 15000 flow, removed 55 selfloop flow, removed 13 redundant places. [2023-08-31 01:05:21,532 INFO L231 Difference]: Finished difference. Result has 412 places, 528 transitions, 13847 flow [2023-08-31 01:05:21,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13339, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13847, PETRI_PLACES=412, PETRI_TRANSITIONS=528} [2023-08-31 01:05:21,533 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 386 predicate places. [2023-08-31 01:05:21,533 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 528 transitions, 13847 flow [2023-08-31 01:05:21,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:21,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:21,534 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:21,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-31 01:05:21,534 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:21,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1572709157, now seen corresponding path program 28 times [2023-08-31 01:05:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:21,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000095189] [2023-08-31 01:05:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:21,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:21,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000095189] [2023-08-31 01:05:21,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000095189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:21,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:21,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:05:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588673823] [2023-08-31 01:05:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:21,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:05:21,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:21,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:05:21,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:05:22,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:05:22,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 528 transitions, 13847 flow. Second operand has 12 states, 12 states have (on average 155.75) internal successors, (1869), 12 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:22,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:22,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:05:22,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:23,729 INFO L130 PetriNetUnfolder]: 1975/3602 cut-off events. [2023-08-31 01:05:23,729 INFO L131 PetriNetUnfolder]: For 78344/78344 co-relation queries the response was YES. [2023-08-31 01:05:23,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32307 conditions, 3602 events. 1975/3602 cut-off events. For 78344/78344 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22769 event pairs, 40 based on Foata normal form. 1/3603 useless extension candidates. Maximal degree in co-relation 32127. Up to 826 conditions per place. [2023-08-31 01:05:23,764 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 259 selfloop transitions, 371 changer transitions 8/638 dead transitions. [2023-08-31 01:05:23,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 638 transitions, 16254 flow [2023-08-31 01:05:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-31 01:05:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-31 01:05:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3712 transitions. [2023-08-31 01:05:23,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936373276776246 [2023-08-31 01:05:23,767 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3712 transitions. [2023-08-31 01:05:23,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3712 transitions. [2023-08-31 01:05:23,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:23,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3712 transitions. [2023-08-31 01:05:23,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 161.3913043478261) internal successors, (3712), 23 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:23,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:23,773 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:23,773 INFO L175 Difference]: Start difference. First operand has 412 places, 528 transitions, 13847 flow. Second operand 23 states and 3712 transitions. [2023-08-31 01:05:23,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 638 transitions, 16254 flow [2023-08-31 01:05:24,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 638 transitions, 15864 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-08-31 01:05:24,130 INFO L231 Difference]: Finished difference. Result has 421 places, 548 transitions, 14866 flow [2023-08-31 01:05:24,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13488, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14866, PETRI_PLACES=421, PETRI_TRANSITIONS=548} [2023-08-31 01:05:24,131 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 395 predicate places. [2023-08-31 01:05:24,131 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 548 transitions, 14866 flow [2023-08-31 01:05:24,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.75) internal successors, (1869), 12 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:24,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:24,131 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:24,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-31 01:05:24,132 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:24,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash 273531114, now seen corresponding path program 1 times [2023-08-31 01:05:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:24,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877575849] [2023-08-31 01:05:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:24,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:24,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:24,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877575849] [2023-08-31 01:05:24,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877575849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:05:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608197366] [2023-08-31 01:05:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:24,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:05:24,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:05:24,177 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:05:24,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-31 01:05:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:24,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 01:05:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:05:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:24,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:05:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:24,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608197366] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:05:24,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:05:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-31 01:05:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523489421] [2023-08-31 01:05:24,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:05:24,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:05:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:24,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:05:24,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:05:24,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 410 [2023-08-31 01:05:24,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 548 transitions, 14866 flow. Second operand has 10 states, 10 states have (on average 180.6) internal successors, (1806), 10 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:24,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:24,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 410 [2023-08-31 01:05:24,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:25,582 INFO L130 PetriNetUnfolder]: 2211/4119 cut-off events. [2023-08-31 01:05:25,583 INFO L131 PetriNetUnfolder]: For 91668/91674 co-relation queries the response was YES. [2023-08-31 01:05:25,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36793 conditions, 4119 events. 2211/4119 cut-off events. For 91668/91674 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 25004 event pairs, 383 based on Foata normal form. 224/4339 useless extension candidates. Maximal degree in co-relation 36607. Up to 1023 conditions per place. [2023-08-31 01:05:25,621 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 655 selfloop transitions, 94 changer transitions 0/766 dead transitions. [2023-08-31 01:05:25,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 766 transitions, 20400 flow [2023-08-31 01:05:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:05:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:05:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1331 transitions. [2023-08-31 01:05:25,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46376306620209057 [2023-08-31 01:05:25,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1331 transitions. [2023-08-31 01:05:25,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1331 transitions. [2023-08-31 01:05:25,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:25,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1331 transitions. [2023-08-31 01:05:25,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.14285714285714) internal successors, (1331), 7 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:25,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:25,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:25,625 INFO L175 Difference]: Start difference. First operand has 421 places, 548 transitions, 14866 flow. Second operand 7 states and 1331 transitions. [2023-08-31 01:05:25,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 766 transitions, 20400 flow [2023-08-31 01:05:25,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 766 transitions, 19461 flow, removed 35 selfloop flow, removed 19 redundant places. [2023-08-31 01:05:26,003 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 14730 flow [2023-08-31 01:05:26,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14210, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14730, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2023-08-31 01:05:26,003 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 385 predicate places. [2023-08-31 01:05:26,004 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 14730 flow [2023-08-31 01:05:26,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 180.6) internal successors, (1806), 10 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:26,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:26,004 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:26,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-31 01:05:26,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:05:26,209 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:26,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:26,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1097738867, now seen corresponding path program 1 times [2023-08-31 01:05:26,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:26,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813600760] [2023-08-31 01:05:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:26,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813600760] [2023-08-31 01:05:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813600760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:26,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:05:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430413779] [2023-08-31 01:05:26,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:26,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:05:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:05:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:05:26,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:05:26,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 14730 flow. Second operand has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:26,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:26,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:05:26,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:28,062 INFO L130 PetriNetUnfolder]: 2838/5023 cut-off events. [2023-08-31 01:05:28,063 INFO L131 PetriNetUnfolder]: For 108702/108702 co-relation queries the response was YES. [2023-08-31 01:05:28,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43516 conditions, 5023 events. 2838/5023 cut-off events. For 108702/108702 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30024 event pairs, 499 based on Foata normal form. 8/5031 useless extension candidates. Maximal degree in co-relation 43333. Up to 2125 conditions per place. [2023-08-31 01:05:28,115 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 353 selfloop transitions, 299 changer transitions 5/657 dead transitions. [2023-08-31 01:05:28,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 657 transitions, 17245 flow [2023-08-31 01:05:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:05:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:05:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2020 transitions. [2023-08-31 01:05:28,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105691056910569 [2023-08-31 01:05:28,117 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2020 transitions. [2023-08-31 01:05:28,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2020 transitions. [2023-08-31 01:05:28,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:28,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2020 transitions. [2023-08-31 01:05:28,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 168.33333333333334) internal successors, (2020), 12 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:28,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:28,121 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:28,121 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 14730 flow. Second operand 12 states and 2020 transitions. [2023-08-31 01:05:28,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 657 transitions, 17245 flow [2023-08-31 01:05:28,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 657 transitions, 17137 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-31 01:05:28,659 INFO L231 Difference]: Finished difference. Result has 425 places, 594 transitions, 16252 flow [2023-08-31 01:05:28,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14602, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16252, PETRI_PLACES=425, PETRI_TRANSITIONS=594} [2023-08-31 01:05:28,660 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 399 predicate places. [2023-08-31 01:05:28,660 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 594 transitions, 16252 flow [2023-08-31 01:05:28,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:28,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:28,660 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:28,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-31 01:05:28,661 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:28,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash 218436905, now seen corresponding path program 2 times [2023-08-31 01:05:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:28,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666690342] [2023-08-31 01:05:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:28,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666690342] [2023-08-31 01:05:28,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666690342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:05:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131596886] [2023-08-31 01:05:28,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:05:28,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:05:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:05:28,906 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:05:28,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-31 01:05:29,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:05:29,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:05:29,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:05:29,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:05:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:29,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:05:29,327 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-08-31 01:05:29,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-08-31 01:05:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:29,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131596886] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:05:29,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:05:29,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 18 [2023-08-31 01:05:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401541231] [2023-08-31 01:05:29,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:29,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:05:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:29,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:05:29,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-31 01:05:29,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-31 01:05:29,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 594 transitions, 16252 flow. Second operand has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:29,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:29,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-31 01:05:29,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:30,801 INFO L130 PetriNetUnfolder]: 2848/5033 cut-off events. [2023-08-31 01:05:30,801 INFO L131 PetriNetUnfolder]: For 118126/118126 co-relation queries the response was YES. [2023-08-31 01:05:30,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45277 conditions, 5033 events. 2848/5033 cut-off events. For 118126/118126 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 29971 event pairs, 618 based on Foata normal form. 8/5041 useless extension candidates. Maximal degree in co-relation 45092. Up to 2903 conditions per place. [2023-08-31 01:05:30,854 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 335 selfloop transitions, 297 changer transitions 0/632 dead transitions. [2023-08-31 01:05:30,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 632 transitions, 17924 flow [2023-08-31 01:05:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:05:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:05:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1399 transitions. [2023-08-31 01:05:30,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42652439024390243 [2023-08-31 01:05:30,856 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1399 transitions. [2023-08-31 01:05:30,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1399 transitions. [2023-08-31 01:05:30,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:30,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1399 transitions. [2023-08-31 01:05:30,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 174.875) internal successors, (1399), 8 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:30,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:30,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:30,858 INFO L175 Difference]: Start difference. First operand has 425 places, 594 transitions, 16252 flow. Second operand 8 states and 1399 transitions. [2023-08-31 01:05:30,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 632 transitions, 17924 flow [2023-08-31 01:05:31,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 632 transitions, 17744 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-08-31 01:05:31,413 INFO L231 Difference]: Finished difference. Result has 424 places, 598 transitions, 16844 flow [2023-08-31 01:05:31,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16072, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16844, PETRI_PLACES=424, PETRI_TRANSITIONS=598} [2023-08-31 01:05:31,414 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 398 predicate places. [2023-08-31 01:05:31,414 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 598 transitions, 16844 flow [2023-08-31 01:05:31,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:31,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:31,415 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:31,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-31 01:05:31,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-08-31 01:05:31,621 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:31,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash -179770209, now seen corresponding path program 3 times [2023-08-31 01:05:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544531561] [2023-08-31 01:05:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:31,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544531561] [2023-08-31 01:05:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544531561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:05:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228745206] [2023-08-31 01:05:31,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:05:31,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:05:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:05:31,888 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:05:31,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-31 01:05:32,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:05:32,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:05:32,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:05:32,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:05:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:32,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:05:32,278 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-08-31 01:05:32,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-08-31 01:05:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:32,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228745206] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:05:32,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:05:32,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-08-31 01:05:32,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607636469] [2023-08-31 01:05:32,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:32,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:05:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:05:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:05:32,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-31 01:05:32,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 598 transitions, 16844 flow. Second operand has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:32,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:32,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-31 01:05:32,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:33,877 INFO L130 PetriNetUnfolder]: 2850/5039 cut-off events. [2023-08-31 01:05:33,877 INFO L131 PetriNetUnfolder]: For 123178/123178 co-relation queries the response was YES. [2023-08-31 01:05:33,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46033 conditions, 5039 events. 2850/5039 cut-off events. For 123178/123178 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 30079 event pairs, 634 based on Foata normal form. 4/5043 useless extension candidates. Maximal degree in co-relation 45844. Up to 2907 conditions per place. [2023-08-31 01:05:33,935 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 322 selfloop transitions, 302 changer transitions 0/624 dead transitions. [2023-08-31 01:05:33,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 624 transitions, 18310 flow [2023-08-31 01:05:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:05:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:05:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1391 transitions. [2023-08-31 01:05:33,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4240853658536585 [2023-08-31 01:05:33,937 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1391 transitions. [2023-08-31 01:05:33,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1391 transitions. [2023-08-31 01:05:33,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:33,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1391 transitions. [2023-08-31 01:05:33,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.875) internal successors, (1391), 8 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:33,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:33,939 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:33,939 INFO L175 Difference]: Start difference. First operand has 424 places, 598 transitions, 16844 flow. Second operand 8 states and 1391 transitions. [2023-08-31 01:05:33,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 624 transitions, 18310 flow [2023-08-31 01:05:34,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 624 transitions, 17964 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-31 01:05:34,525 INFO L231 Difference]: Finished difference. Result has 427 places, 601 transitions, 17243 flow [2023-08-31 01:05:34,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16500, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17243, PETRI_PLACES=427, PETRI_TRANSITIONS=601} [2023-08-31 01:05:34,526 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 401 predicate places. [2023-08-31 01:05:34,526 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 601 transitions, 17243 flow [2023-08-31 01:05:34,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:34,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:34,526 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:34,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-31 01:05:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-08-31 01:05:34,732 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:34,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1438672969, now seen corresponding path program 4 times [2023-08-31 01:05:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79813401] [2023-08-31 01:05:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:34,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:34,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79813401] [2023-08-31 01:05:34,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79813401] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:05:34,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205832926] [2023-08-31 01:05:34,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:05:34,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:05:34,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:05:34,992 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:05:34,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-31 01:05:35,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:05:35,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:05:35,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:05:35,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:05:35,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:05:35,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-08-31 01:05:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:35,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:05:39,368 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-08-31 01:05:39,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-08-31 01:05:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205832926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:05:39,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:05:39,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-08-31 01:05:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250815298] [2023-08-31 01:05:39,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:05:39,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 01:05:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 01:05:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=271, Unknown=2, NotChecked=0, Total=342 [2023-08-31 01:05:40,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:42,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:44,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:46,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:48,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:51,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:53,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:55,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:05:55,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 410 [2023-08-31 01:05:55,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 601 transitions, 17243 flow. Second operand has 19 states, 19 states have (on average 154.26315789473685) internal successors, (2931), 19 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:55,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:55,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 410 [2023-08-31 01:05:55,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:05:57,100 INFO L130 PetriNetUnfolder]: 2880/5089 cut-off events. [2023-08-31 01:05:57,100 INFO L131 PetriNetUnfolder]: For 129461/129461 co-relation queries the response was YES. [2023-08-31 01:05:57,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47251 conditions, 5089 events. 2880/5089 cut-off events. For 129461/129461 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30388 event pairs, 639 based on Foata normal form. 8/5097 useless extension candidates. Maximal degree in co-relation 47061. Up to 2915 conditions per place. [2023-08-31 01:05:57,173 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 324 selfloop transitions, 324 changer transitions 0/648 dead transitions. [2023-08-31 01:05:57,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 648 transitions, 19179 flow [2023-08-31 01:05:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:05:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:05:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2069 transitions. [2023-08-31 01:05:57,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38818011257035645 [2023-08-31 01:05:57,175 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2069 transitions. [2023-08-31 01:05:57,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2069 transitions. [2023-08-31 01:05:57,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:05:57,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2069 transitions. [2023-08-31 01:05:57,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 159.15384615384616) internal successors, (2069), 13 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:57,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:57,180 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:57,180 INFO L175 Difference]: Start difference. First operand has 427 places, 601 transitions, 17243 flow. Second operand 13 states and 2069 transitions. [2023-08-31 01:05:57,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 648 transitions, 19179 flow [2023-08-31 01:05:58,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 648 transitions, 18694 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:05:58,021 INFO L231 Difference]: Finished difference. Result has 436 places, 611 transitions, 17779 flow [2023-08-31 01:05:58,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16768, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17779, PETRI_PLACES=436, PETRI_TRANSITIONS=611} [2023-08-31 01:05:58,022 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 410 predicate places. [2023-08-31 01:05:58,022 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 611 transitions, 17779 flow [2023-08-31 01:05:58,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 154.26315789473685) internal successors, (2931), 19 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:58,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:05:58,023 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:05:58,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-31 01:05:58,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:05:58,229 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:05:58,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:05:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash -699072181, now seen corresponding path program 5 times [2023-08-31 01:05:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:05:58,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685161672] [2023-08-31 01:05:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:05:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:05:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:05:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:05:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:05:58,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685161672] [2023-08-31 01:05:58,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685161672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:05:58,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:05:58,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:05:58,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464306331] [2023-08-31 01:05:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:05:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:05:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:05:58,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:05:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:05:58,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:05:58,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 611 transitions, 17779 flow. Second operand has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:05:58,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:05:58,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:05:58,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:00,386 INFO L130 PetriNetUnfolder]: 2864/5069 cut-off events. [2023-08-31 01:06:00,386 INFO L131 PetriNetUnfolder]: For 130616/130616 co-relation queries the response was YES. [2023-08-31 01:06:00,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47354 conditions, 5069 events. 2864/5069 cut-off events. For 130616/130616 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30347 event pairs, 504 based on Foata normal form. 8/5077 useless extension candidates. Maximal degree in co-relation 47162. Up to 2201 conditions per place. [2023-08-31 01:06:00,441 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 281 selfloop transitions, 371 changer transitions 0/652 dead transitions. [2023-08-31 01:06:00,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 652 transitions, 19392 flow [2023-08-31 01:06:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:06:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:06:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2174 transitions. [2023-08-31 01:06:00,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40787992495309566 [2023-08-31 01:06:00,444 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2174 transitions. [2023-08-31 01:06:00,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2174 transitions. [2023-08-31 01:06:00,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:00,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2174 transitions. [2023-08-31 01:06:00,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.23076923076923) internal successors, (2174), 13 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:00,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:00,448 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:00,448 INFO L175 Difference]: Start difference. First operand has 436 places, 611 transitions, 17779 flow. Second operand 13 states and 2174 transitions. [2023-08-31 01:06:00,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 652 transitions, 19392 flow [2023-08-31 01:06:01,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 652 transitions, 18771 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-31 01:06:01,096 INFO L231 Difference]: Finished difference. Result has 443 places, 613 transitions, 18154 flow [2023-08-31 01:06:01,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17086, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18154, PETRI_PLACES=443, PETRI_TRANSITIONS=613} [2023-08-31 01:06:01,097 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 417 predicate places. [2023-08-31 01:06:01,097 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 613 transitions, 18154 flow [2023-08-31 01:06:01,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:01,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:01,097 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:01,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-31 01:06:01,098 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:01,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 333984891, now seen corresponding path program 6 times [2023-08-31 01:06:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:01,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909620398] [2023-08-31 01:06:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:01,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:01,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909620398] [2023-08-31 01:06:01,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909620398] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:01,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862089194] [2023-08-31 01:06:01,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:06:01,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:01,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:01,381 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:01,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-31 01:06:01,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 01:06:01,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:01,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:06:01,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:01,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-31 01:06:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:01,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:01,766 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-31 01:06:01,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-08-31 01:06:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862089194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:06:01,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:06:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-08-31 01:06:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146358814] [2023-08-31 01:06:01,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:06:01,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:06:01,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:06:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-08-31 01:06:02,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:06:02,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 613 transitions, 18154 flow. Second operand has 16 states, 16 states have (on average 161.6875) internal successors, (2587), 16 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:02,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:02,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:06:02,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:03,759 INFO L130 PetriNetUnfolder]: 2885/5106 cut-off events. [2023-08-31 01:06:03,759 INFO L131 PetriNetUnfolder]: For 137626/137626 co-relation queries the response was YES. [2023-08-31 01:06:03,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48441 conditions, 5106 events. 2885/5106 cut-off events. For 137626/137626 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30549 event pairs, 626 based on Foata normal form. 10/5116 useless extension candidates. Maximal degree in co-relation 48248. Up to 2927 conditions per place. [2023-08-31 01:06:03,818 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 311 selfloop transitions, 347 changer transitions 0/658 dead transitions. [2023-08-31 01:06:03,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 658 transitions, 20119 flow [2023-08-31 01:06:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:06:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:06:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2165 transitions. [2023-08-31 01:06:03,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40619136960600377 [2023-08-31 01:06:03,820 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2165 transitions. [2023-08-31 01:06:03,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2165 transitions. [2023-08-31 01:06:03,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:03,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2165 transitions. [2023-08-31 01:06:03,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.53846153846155) internal successors, (2165), 13 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:03,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:03,824 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:03,824 INFO L175 Difference]: Start difference. First operand has 443 places, 613 transitions, 18154 flow. Second operand 13 states and 2165 transitions. [2023-08-31 01:06:03,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 658 transitions, 20119 flow [2023-08-31 01:06:04,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 658 transitions, 19460 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-08-31 01:06:04,572 INFO L231 Difference]: Finished difference. Result has 447 places, 621 transitions, 18546 flow [2023-08-31 01:06:04,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17458, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18546, PETRI_PLACES=447, PETRI_TRANSITIONS=621} [2023-08-31 01:06:04,573 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-08-31 01:06:04,573 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 621 transitions, 18546 flow [2023-08-31 01:06:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 161.6875) internal successors, (2587), 16 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:04,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:04,574 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:04,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-31 01:06:04,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:04,779 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:04,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash -61596447, now seen corresponding path program 7 times [2023-08-31 01:06:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972771201] [2023-08-31 01:06:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:05,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972771201] [2023-08-31 01:06:05,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972771201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:05,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978505643] [2023-08-31 01:06:05,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 01:06:05,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:05,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:05,041 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:05,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-31 01:06:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:05,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:06:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:05,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-31 01:06:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:05,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:05,412 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-31 01:06:05,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-08-31 01:06:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978505643] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:06:05,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:06:05,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-08-31 01:06:05,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124014995] [2023-08-31 01:06:05,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:06:05,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:06:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:06:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-08-31 01:06:05,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:06:05,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 621 transitions, 18546 flow. Second operand has 16 states, 16 states have (on average 161.6875) internal successors, (2587), 16 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:05,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:05,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:06:05,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:07,496 INFO L130 PetriNetUnfolder]: 2856/5053 cut-off events. [2023-08-31 01:06:07,496 INFO L131 PetriNetUnfolder]: For 135880/135880 co-relation queries the response was YES. [2023-08-31 01:06:07,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48127 conditions, 5053 events. 2856/5053 cut-off events. For 135880/135880 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30096 event pairs, 593 based on Foata normal form. 10/5063 useless extension candidates. Maximal degree in co-relation 47933. Up to 2927 conditions per place. [2023-08-31 01:06:07,549 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 327 selfloop transitions, 341 changer transitions 0/668 dead transitions. [2023-08-31 01:06:07,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 668 transitions, 20307 flow [2023-08-31 01:06:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:06:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:06:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2336 transitions. [2023-08-31 01:06:07,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069686411149826 [2023-08-31 01:06:07,551 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2336 transitions. [2023-08-31 01:06:07,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2336 transitions. [2023-08-31 01:06:07,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:07,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2336 transitions. [2023-08-31 01:06:07,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.85714285714286) internal successors, (2336), 14 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:07,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:07,555 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:07,555 INFO L175 Difference]: Start difference. First operand has 447 places, 621 transitions, 18546 flow. Second operand 14 states and 2336 transitions. [2023-08-31 01:06:07,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 668 transitions, 20307 flow [2023-08-31 01:06:08,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 668 transitions, 19768 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-31 01:06:08,246 INFO L231 Difference]: Finished difference. Result has 456 places, 621 transitions, 18763 flow [2023-08-31 01:06:08,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17934, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18763, PETRI_PLACES=456, PETRI_TRANSITIONS=621} [2023-08-31 01:06:08,247 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-08-31 01:06:08,247 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 621 transitions, 18763 flow [2023-08-31 01:06:08,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 161.6875) internal successors, (2587), 16 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:08,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:08,247 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:08,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-31 01:06:08,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-08-31 01:06:08,451 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:08,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 294394613, now seen corresponding path program 8 times [2023-08-31 01:06:08,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:08,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209593478] [2023-08-31 01:06:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:08,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:08,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:08,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209593478] [2023-08-31 01:06:08,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209593478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844872562] [2023-08-31 01:06:08,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:06:08,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:08,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:08,789 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:08,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-31 01:06:09,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:06:09,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:09,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:06:09,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:09,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-31 01:06:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:09,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:09,217 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-08-31 01:06:09,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-08-31 01:06:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:09,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844872562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:06:09,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:06:09,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-08-31 01:06:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970919632] [2023-08-31 01:06:09,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:06:09,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:06:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:06:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-31 01:06:09,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:06:09,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 621 transitions, 18763 flow. Second operand has 16 states, 16 states have (on average 161.6875) internal successors, (2587), 16 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:09,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:09,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:06:09,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:11,289 INFO L130 PetriNetUnfolder]: 2846/5033 cut-off events. [2023-08-31 01:06:11,290 INFO L131 PetriNetUnfolder]: For 132951/132951 co-relation queries the response was YES. [2023-08-31 01:06:11,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48249 conditions, 5033 events. 2846/5033 cut-off events. For 132951/132951 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29810 event pairs, 258 based on Foata normal form. 4/5037 useless extension candidates. Maximal degree in co-relation 48051. Up to 1656 conditions per place. [2023-08-31 01:06:11,365 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 307 selfloop transitions, 357 changer transitions 0/664 dead transitions. [2023-08-31 01:06:11,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 664 transitions, 20365 flow [2023-08-31 01:06:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:06:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:06:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2171 transitions. [2023-08-31 01:06:11,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073170731707317 [2023-08-31 01:06:11,367 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2171 transitions. [2023-08-31 01:06:11,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2171 transitions. [2023-08-31 01:06:11,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:11,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2171 transitions. [2023-08-31 01:06:11,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:11,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:11,371 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:11,371 INFO L175 Difference]: Start difference. First operand has 456 places, 621 transitions, 18763 flow. Second operand 13 states and 2171 transitions. [2023-08-31 01:06:11,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 664 transitions, 20365 flow [2023-08-31 01:06:12,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 664 transitions, 19331 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-08-31 01:06:12,016 INFO L231 Difference]: Finished difference. Result has 457 places, 621 transitions, 18455 flow [2023-08-31 01:06:12,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17695, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18455, PETRI_PLACES=457, PETRI_TRANSITIONS=621} [2023-08-31 01:06:12,017 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 431 predicate places. [2023-08-31 01:06:12,017 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 621 transitions, 18455 flow [2023-08-31 01:06:12,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 161.6875) internal successors, (2587), 16 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:12,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:12,018 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:12,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-31 01:06:12,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:12,224 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:12,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1174875799, now seen corresponding path program 9 times [2023-08-31 01:06:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590262797] [2023-08-31 01:06:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:06:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:12,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590262797] [2023-08-31 01:06:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590262797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:12,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540679760] [2023-08-31 01:06:12,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:06:12,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:12,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:12,915 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:12,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-31 01:06:13,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:06:13,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:13,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:06:13,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:13,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-31 01:06:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:13,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:13,315 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-31 01:06:13,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-08-31 01:06:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:13,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540679760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:06:13,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:06:13,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 7] total 25 [2023-08-31 01:06:13,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986475651] [2023-08-31 01:06:13,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:06:13,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-31 01:06:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-31 01:06:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-08-31 01:06:14,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-08-31 01:06:14,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 621 transitions, 18455 flow. Second operand has 25 states, 25 states have (on average 148.2) internal successors, (3705), 25 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:14,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:14,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-08-31 01:06:14,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:16,218 INFO L130 PetriNetUnfolder]: 2858/5053 cut-off events. [2023-08-31 01:06:16,219 INFO L131 PetriNetUnfolder]: For 136263/136263 co-relation queries the response was YES. [2023-08-31 01:06:16,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48375 conditions, 5053 events. 2858/5053 cut-off events. For 136263/136263 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29984 event pairs, 488 based on Foata normal form. 4/5057 useless extension candidates. Maximal degree in co-relation 48181. Up to 1656 conditions per place. [2023-08-31 01:06:16,282 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 309 selfloop transitions, 366 changer transitions 0/675 dead transitions. [2023-08-31 01:06:16,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 675 transitions, 20458 flow [2023-08-31 01:06:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:06:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:06:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2447 transitions. [2023-08-31 01:06:16,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37301829268292686 [2023-08-31 01:06:16,284 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2447 transitions. [2023-08-31 01:06:16,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2447 transitions. [2023-08-31 01:06:16,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:16,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2447 transitions. [2023-08-31 01:06:16,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 152.9375) internal successors, (2447), 16 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:16,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:16,289 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:16,289 INFO L175 Difference]: Start difference. First operand has 457 places, 621 transitions, 18455 flow. Second operand 16 states and 2447 transitions. [2023-08-31 01:06:16,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 675 transitions, 20458 flow [2023-08-31 01:06:17,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 675 transitions, 20311 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-31 01:06:17,016 INFO L231 Difference]: Finished difference. Result has 467 places, 628 transitions, 19315 flow [2023-08-31 01:06:17,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18308, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19315, PETRI_PLACES=467, PETRI_TRANSITIONS=628} [2023-08-31 01:06:17,017 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 441 predicate places. [2023-08-31 01:06:17,017 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 628 transitions, 19315 flow [2023-08-31 01:06:17,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 148.2) internal successors, (3705), 25 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:17,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:17,018 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:17,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-31 01:06:17,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2023-08-31 01:06:17,224 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:17,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1955066157, now seen corresponding path program 10 times [2023-08-31 01:06:17,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:17,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853175476] [2023-08-31 01:06:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:17,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853175476] [2023-08-31 01:06:17,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853175476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:17,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980132867] [2023-08-31 01:06:17,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:06:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:17,519 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:17,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-31 01:06:17,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:06:17,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:17,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:06:17,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:17,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:06:17,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-08-31 01:06:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:17,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:17,897 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-31 01:06:17,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-08-31 01:06:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:17,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980132867] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:06:17,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:06:17,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-08-31 01:06:17,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236649623] [2023-08-31 01:06:17,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:06:17,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 01:06:17,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 01:06:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-08-31 01:06:20,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:06:20,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:06:20,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 628 transitions, 19315 flow. Second operand has 19 states, 19 states have (on average 161.3684210526316) internal successors, (3066), 19 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:20,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:20,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:06:20,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:22,018 INFO L130 PetriNetUnfolder]: 2864/5063 cut-off events. [2023-08-31 01:06:22,019 INFO L131 PetriNetUnfolder]: For 146806/146806 co-relation queries the response was YES. [2023-08-31 01:06:22,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49480 conditions, 5063 events. 2864/5063 cut-off events. For 146806/146806 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30083 event pairs, 508 based on Foata normal form. 4/5067 useless extension candidates. Maximal degree in co-relation 49282. Up to 1656 conditions per place. [2023-08-31 01:06:22,080 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 295 selfloop transitions, 366 changer transitions 0/661 dead transitions. [2023-08-31 01:06:22,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 661 transitions, 20951 flow [2023-08-31 01:06:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:06:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:06:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1679 transitions. [2023-08-31 01:06:22,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095121951219512 [2023-08-31 01:06:22,082 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1679 transitions. [2023-08-31 01:06:22,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1679 transitions. [2023-08-31 01:06:22,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:22,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1679 transitions. [2023-08-31 01:06:22,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.9) internal successors, (1679), 10 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:22,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:22,085 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:22,085 INFO L175 Difference]: Start difference. First operand has 467 places, 628 transitions, 19315 flow. Second operand 10 states and 1679 transitions. [2023-08-31 01:06:22,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 661 transitions, 20951 flow [2023-08-31 01:06:22,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 661 transitions, 20211 flow, removed 20 selfloop flow, removed 12 redundant places. [2023-08-31 01:06:22,729 INFO L231 Difference]: Finished difference. Result has 466 places, 630 transitions, 19733 flow [2023-08-31 01:06:22,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18577, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19733, PETRI_PLACES=466, PETRI_TRANSITIONS=630} [2023-08-31 01:06:22,729 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-08-31 01:06:22,729 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 630 transitions, 19733 flow [2023-08-31 01:06:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 161.3684210526316) internal successors, (3066), 19 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:22,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:22,730 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:22,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-31 01:06:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:22,936 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:22,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2135374965, now seen corresponding path program 11 times [2023-08-31 01:06:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537369860] [2023-08-31 01:06:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:22,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:23,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:23,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537369860] [2023-08-31 01:06:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537369860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:06:23,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:06:23,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:06:23,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601269508] [2023-08-31 01:06:23,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:06:23,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:06:23,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:06:23,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:06:23,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 410 [2023-08-31 01:06:23,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 630 transitions, 19733 flow. Second operand has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:23,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:23,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 410 [2023-08-31 01:06:23,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:24,812 INFO L130 PetriNetUnfolder]: 2860/5059 cut-off events. [2023-08-31 01:06:24,812 INFO L131 PetriNetUnfolder]: For 154616/154616 co-relation queries the response was YES. [2023-08-31 01:06:24,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49898 conditions, 5059 events. 2860/5059 cut-off events. For 154616/154616 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30056 event pairs, 660 based on Foata normal form. 4/5063 useless extension candidates. Maximal degree in co-relation 49705. Up to 2446 conditions per place. [2023-08-31 01:06:24,879 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 415 selfloop transitions, 238 changer transitions 4/657 dead transitions. [2023-08-31 01:06:24,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 657 transitions, 21220 flow [2023-08-31 01:06:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:06:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:06:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1666 transitions. [2023-08-31 01:06:24,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4063414634146341 [2023-08-31 01:06:24,881 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1666 transitions. [2023-08-31 01:06:24,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1666 transitions. [2023-08-31 01:06:24,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:24,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1666 transitions. [2023-08-31 01:06:24,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 166.6) internal successors, (1666), 10 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:24,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:24,887 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:24,887 INFO L175 Difference]: Start difference. First operand has 466 places, 630 transitions, 19733 flow. Second operand 10 states and 1666 transitions. [2023-08-31 01:06:24,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 657 transitions, 21220 flow [2023-08-31 01:06:25,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 657 transitions, 20634 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-31 01:06:25,599 INFO L231 Difference]: Finished difference. Result has 466 places, 628 transitions, 19587 flow [2023-08-31 01:06:25,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19135, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19587, PETRI_PLACES=466, PETRI_TRANSITIONS=628} [2023-08-31 01:06:25,600 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-08-31 01:06:25,600 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 628 transitions, 19587 flow [2023-08-31 01:06:25,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:25,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:25,601 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:25,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-31 01:06:25,601 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:25,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 721457961, now seen corresponding path program 12 times [2023-08-31 01:06:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106419511] [2023-08-31 01:06:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106419511] [2023-08-31 01:06:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106419511] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970042620] [2023-08-31 01:06:25,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:06:25,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:25,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:25,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-31 01:06:26,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 01:06:26,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:26,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 01:06:26,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:26,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:26,297 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-31 01:06:26,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-08-31 01:06:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:26,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970042620] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:26,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:06:26,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-08-31 01:06:26,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799277835] [2023-08-31 01:06:26,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:06:26,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:06:26,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:06:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:06:26,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-31 01:06:26,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 628 transitions, 19587 flow. Second operand has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:26,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:26,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-31 01:06:26,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:27,940 INFO L130 PetriNetUnfolder]: 2849/5034 cut-off events. [2023-08-31 01:06:27,940 INFO L131 PetriNetUnfolder]: For 153237/153237 co-relation queries the response was YES. [2023-08-31 01:06:27,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49647 conditions, 5034 events. 2849/5034 cut-off events. For 153237/153237 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 29821 event pairs, 506 based on Foata normal form. 4/5038 useless extension candidates. Maximal degree in co-relation 49454. Up to 1656 conditions per place. [2023-08-31 01:06:28,005 INFO L137 encePairwiseOnDemand]: 402/410 looper letters, 292 selfloop transitions, 359 changer transitions 0/651 dead transitions. [2023-08-31 01:06:28,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 651 transitions, 20966 flow [2023-08-31 01:06:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:06:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:06:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1402 transitions. [2023-08-31 01:06:28,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274390243902439 [2023-08-31 01:06:28,006 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1402 transitions. [2023-08-31 01:06:28,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1402 transitions. [2023-08-31 01:06:28,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:28,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1402 transitions. [2023-08-31 01:06:28,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:28,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:28,010 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:28,010 INFO L175 Difference]: Start difference. First operand has 466 places, 628 transitions, 19587 flow. Second operand 8 states and 1402 transitions. [2023-08-31 01:06:28,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 651 transitions, 20966 flow [2023-08-31 01:06:28,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 651 transitions, 20081 flow, removed 8 selfloop flow, removed 23 redundant places. [2023-08-31 01:06:28,817 INFO L231 Difference]: Finished difference. Result has 447 places, 625 transitions, 19339 flow [2023-08-31 01:06:28,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18621, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19339, PETRI_PLACES=447, PETRI_TRANSITIONS=625} [2023-08-31 01:06:28,818 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-08-31 01:06:28,818 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 625 transitions, 19339 flow [2023-08-31 01:06:28,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:28,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:28,818 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:28,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-31 01:06:29,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:29,024 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:29,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2023468011, now seen corresponding path program 13 times [2023-08-31 01:06:29,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:29,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194830711] [2023-08-31 01:06:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:29,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:29,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194830711] [2023-08-31 01:06:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194830711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:06:29,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:06:29,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:06:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906525734] [2023-08-31 01:06:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:06:29,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:06:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:06:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:06:29,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:06:29,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 625 transitions, 19339 flow. Second operand has 12 states, 12 states have (on average 157.83333333333334) internal successors, (1894), 12 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:29,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:29,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:06:29,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:31,162 INFO L130 PetriNetUnfolder]: 2910/5144 cut-off events. [2023-08-31 01:06:31,162 INFO L131 PetriNetUnfolder]: For 150473/150473 co-relation queries the response was YES. [2023-08-31 01:06:31,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50759 conditions, 5144 events. 2910/5144 cut-off events. For 150473/150473 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30782 event pairs, 503 based on Foata normal form. 4/5148 useless extension candidates. Maximal degree in co-relation 50580. Up to 2180 conditions per place. [2023-08-31 01:06:31,224 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 337 selfloop transitions, 359 changer transitions 4/700 dead transitions. [2023-08-31 01:06:31,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 700 transitions, 21820 flow [2023-08-31 01:06:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:06:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:06:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1975 transitions. [2023-08-31 01:06:31,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014227642276423 [2023-08-31 01:06:31,226 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1975 transitions. [2023-08-31 01:06:31,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1975 transitions. [2023-08-31 01:06:31,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:31,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1975 transitions. [2023-08-31 01:06:31,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 164.58333333333334) internal successors, (1975), 12 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:31,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:31,230 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:31,230 INFO L175 Difference]: Start difference. First operand has 447 places, 625 transitions, 19339 flow. Second operand 12 states and 1975 transitions. [2023-08-31 01:06:31,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 700 transitions, 21820 flow [2023-08-31 01:06:31,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 700 transitions, 21232 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:06:31,948 INFO L231 Difference]: Finished difference. Result has 456 places, 640 transitions, 20257 flow [2023-08-31 01:06:31,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18776, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20257, PETRI_PLACES=456, PETRI_TRANSITIONS=640} [2023-08-31 01:06:31,949 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-08-31 01:06:31,949 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 640 transitions, 20257 flow [2023-08-31 01:06:31,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.83333333333334) internal successors, (1894), 12 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:31,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:31,950 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:31,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-31 01:06:31,950 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:31,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1992329379, now seen corresponding path program 14 times [2023-08-31 01:06:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536856490] [2023-08-31 01:06:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:06:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:33,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536856490] [2023-08-31 01:06:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536856490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798223089] [2023-08-31 01:06:33,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:06:33,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:33,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:33,157 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:33,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-31 01:06:33,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:06:33,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:33,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-31 01:06:33,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:33,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:06:33,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:06:33,729 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:06:33,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-08-31 01:06:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:33,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:06:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798223089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:06:33,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:06:33,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-08-31 01:06:33,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461400090] [2023-08-31 01:06:33,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:06:33,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:06:33,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:33,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:06:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-08-31 01:06:34,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 410 [2023-08-31 01:06:34,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 640 transitions, 20257 flow. Second operand has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:34,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:34,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 410 [2023-08-31 01:06:34,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:35,785 INFO L130 PetriNetUnfolder]: 2905/5135 cut-off events. [2023-08-31 01:06:35,785 INFO L131 PetriNetUnfolder]: For 150455/150455 co-relation queries the response was YES. [2023-08-31 01:06:35,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50959 conditions, 5135 events. 2905/5135 cut-off events. For 150455/150455 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30733 event pairs, 489 based on Foata normal form. 4/5139 useless extension candidates. Maximal degree in co-relation 50846. Up to 2464 conditions per place. [2023-08-31 01:06:35,836 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 288 selfloop transitions, 384 changer transitions 4/676 dead transitions. [2023-08-31 01:06:35,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 676 transitions, 21777 flow [2023-08-31 01:06:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:06:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:06:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1665 transitions. [2023-08-31 01:06:35,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4060975609756098 [2023-08-31 01:06:35,838 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1665 transitions. [2023-08-31 01:06:35,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1665 transitions. [2023-08-31 01:06:35,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:35,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1665 transitions. [2023-08-31 01:06:35,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 166.5) internal successors, (1665), 10 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:35,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:35,841 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:35,841 INFO L175 Difference]: Start difference. First operand has 456 places, 640 transitions, 20257 flow. Second operand 10 states and 1665 transitions. [2023-08-31 01:06:35,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 676 transitions, 21777 flow [2023-08-31 01:06:36,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 676 transitions, 21652 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-31 01:06:36,466 INFO L231 Difference]: Finished difference. Result has 460 places, 638 transitions, 20834 flow [2023-08-31 01:06:36,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20098, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20834, PETRI_PLACES=460, PETRI_TRANSITIONS=638} [2023-08-31 01:06:36,467 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-08-31 01:06:36,467 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 638 transitions, 20834 flow [2023-08-31 01:06:36,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:36,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:36,468 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:36,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-08-31 01:06:36,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:36,673 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:36,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash -302565915, now seen corresponding path program 15 times [2023-08-31 01:06:36,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:36,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970791634] [2023-08-31 01:06:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:36,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:36,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970791634] [2023-08-31 01:06:36,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970791634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:06:36,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:06:36,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:06:36,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418314654] [2023-08-31 01:06:36,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:06:36,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:06:36,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:36,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:06:36,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:06:37,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:06:37,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 638 transitions, 20834 flow. Second operand has 12 states, 12 states have (on average 157.83333333333334) internal successors, (1894), 12 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:37,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:37,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:06:37,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:38,870 INFO L130 PetriNetUnfolder]: 2910/5140 cut-off events. [2023-08-31 01:06:38,871 INFO L131 PetriNetUnfolder]: For 160652/160652 co-relation queries the response was YES. [2023-08-31 01:06:38,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52254 conditions, 5140 events. 2910/5140 cut-off events. For 160652/160652 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30727 event pairs, 491 based on Foata normal form. 4/5144 useless extension candidates. Maximal degree in co-relation 52141. Up to 2510 conditions per place. [2023-08-31 01:06:38,922 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 298 selfloop transitions, 395 changer transitions 0/693 dead transitions. [2023-08-31 01:06:38,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 693 transitions, 22784 flow [2023-08-31 01:06:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:06:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:06:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1969 transitions. [2023-08-31 01:06:38,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40020325203252033 [2023-08-31 01:06:38,924 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1969 transitions. [2023-08-31 01:06:38,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1969 transitions. [2023-08-31 01:06:38,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:38,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1969 transitions. [2023-08-31 01:06:38,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 164.08333333333334) internal successors, (1969), 12 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:38,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:38,927 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:38,927 INFO L175 Difference]: Start difference. First operand has 460 places, 638 transitions, 20834 flow. Second operand 12 states and 1969 transitions. [2023-08-31 01:06:38,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 693 transitions, 22784 flow [2023-08-31 01:06:39,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 693 transitions, 21717 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-08-31 01:06:39,580 INFO L231 Difference]: Finished difference. Result has 459 places, 640 transitions, 20684 flow [2023-08-31 01:06:39,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19780, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20684, PETRI_PLACES=459, PETRI_TRANSITIONS=640} [2023-08-31 01:06:39,581 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 433 predicate places. [2023-08-31 01:06:39,581 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 640 transitions, 20684 flow [2023-08-31 01:06:39,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.83333333333334) internal successors, (1894), 12 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:39,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:39,581 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:39,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-08-31 01:06:39,582 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:39,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:39,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2122392975, now seen corresponding path program 16 times [2023-08-31 01:06:39,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:39,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949050577] [2023-08-31 01:06:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:39,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:06:40,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949050577] [2023-08-31 01:06:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949050577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549502621] [2023-08-31 01:06:40,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:06:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:40,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:40,672 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:40,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-31 01:06:40,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:06:40,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:40,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:06:40,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:41,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:06:41,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:06:41,247 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:06:41,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-08-31 01:06:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:41,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:06:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549502621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:06:41,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:06:41,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-08-31 01:06:41,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834555697] [2023-08-31 01:06:41,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:06:41,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:06:41,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:06:41,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-08-31 01:06:41,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 410 [2023-08-31 01:06:41,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 640 transitions, 20684 flow. Second operand has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:41,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:41,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 410 [2023-08-31 01:06:41,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:43,520 INFO L130 PetriNetUnfolder]: 3116/5474 cut-off events. [2023-08-31 01:06:43,520 INFO L131 PetriNetUnfolder]: For 167679/167679 co-relation queries the response was YES. [2023-08-31 01:06:43,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54709 conditions, 5474 events. 3116/5474 cut-off events. For 167679/167679 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32946 event pairs, 577 based on Foata normal form. 4/5478 useless extension candidates. Maximal degree in co-relation 54595. Up to 1618 conditions per place. [2023-08-31 01:06:43,593 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 293 selfloop transitions, 407 changer transitions 0/700 dead transitions. [2023-08-31 01:06:43,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 700 transitions, 22882 flow [2023-08-31 01:06:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:06:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:06:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1801 transitions. [2023-08-31 01:06:43,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993348115299335 [2023-08-31 01:06:43,595 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1801 transitions. [2023-08-31 01:06:43,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1801 transitions. [2023-08-31 01:06:43,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:43,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1801 transitions. [2023-08-31 01:06:43,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 163.72727272727272) internal successors, (1801), 11 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:43,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:43,599 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:43,599 INFO L175 Difference]: Start difference. First operand has 459 places, 640 transitions, 20684 flow. Second operand 11 states and 1801 transitions. [2023-08-31 01:06:43,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 700 transitions, 22882 flow [2023-08-31 01:06:44,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 700 transitions, 21888 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-31 01:06:44,543 INFO L231 Difference]: Finished difference. Result has 460 places, 653 transitions, 21026 flow [2023-08-31 01:06:44,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19726, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21026, PETRI_PLACES=460, PETRI_TRANSITIONS=653} [2023-08-31 01:06:44,547 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-08-31 01:06:44,547 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 653 transitions, 21026 flow [2023-08-31 01:06:44,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:44,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:44,548 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:44,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-31 01:06:44,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-08-31 01:06:44,753 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:44,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash 435157801, now seen corresponding path program 17 times [2023-08-31 01:06:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941919221] [2023-08-31 01:06:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:45,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941919221] [2023-08-31 01:06:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941919221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190269173] [2023-08-31 01:06:45,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:06:45,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:45,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:45,147 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:45,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-31 01:06:45,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-31 01:06:45,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:45,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 01:06:45,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:45,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:06:45,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 01:06:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:45,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:45,774 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3807 (Array Int Int)) (~scoreB~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3807))) (let ((.cse0 (select .cse1 ~scoreB~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem3#1| (+ (select .cse0 (+ c_~scoreB~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (< (select .cse0 c_~scoreB~0.offset) (select (select .cse1 c_~scoreA~0.base) c_~scoreA~0.offset)))))) is different from false [2023-08-31 01:06:45,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:06:45,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 143 [2023-08-31 01:06:45,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:06:45,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-08-31 01:06:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190269173] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:46,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:06:46,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 10] total 27 [2023-08-31 01:06:46,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614645800] [2023-08-31 01:06:46,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:06:46,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:06:46,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:06:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=608, Unknown=1, NotChecked=50, Total=756 [2023-08-31 01:06:46,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 410 [2023-08-31 01:06:46,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 653 transitions, 21026 flow. Second operand has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:46,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:46,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 410 [2023-08-31 01:06:46,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:06:52,078 INFO L130 PetriNetUnfolder]: 3179/5584 cut-off events. [2023-08-31 01:06:52,078 INFO L131 PetriNetUnfolder]: For 179775/179775 co-relation queries the response was YES. [2023-08-31 01:06:52,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56918 conditions, 5584 events. 3179/5584 cut-off events. For 179775/179775 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33748 event pairs, 700 based on Foata normal form. 2/5586 useless extension candidates. Maximal degree in co-relation 56802. Up to 3304 conditions per place. [2023-08-31 01:06:52,136 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 301 selfloop transitions, 427 changer transitions 0/728 dead transitions. [2023-08-31 01:06:52,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 728 transitions, 24458 flow [2023-08-31 01:06:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:06:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:06:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1572 transitions. [2023-08-31 01:06:52,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485587583148559 [2023-08-31 01:06:52,138 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1572 transitions. [2023-08-31 01:06:52,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1572 transitions. [2023-08-31 01:06:52,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:06:52,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1572 transitions. [2023-08-31 01:06:52,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.9090909090909) internal successors, (1572), 11 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:52,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:52,141 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:52,141 INFO L175 Difference]: Start difference. First operand has 460 places, 653 transitions, 21026 flow. Second operand 11 states and 1572 transitions. [2023-08-31 01:06:52,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 728 transitions, 24458 flow [2023-08-31 01:06:52,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 728 transitions, 23818 flow, removed 84 selfloop flow, removed 11 redundant places. [2023-08-31 01:06:52,905 INFO L231 Difference]: Finished difference. Result has 461 places, 705 transitions, 23231 flow [2023-08-31 01:06:52,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20415, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23231, PETRI_PLACES=461, PETRI_TRANSITIONS=705} [2023-08-31 01:06:52,906 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 435 predicate places. [2023-08-31 01:06:52,906 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 705 transitions, 23231 flow [2023-08-31 01:06:52,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:52,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:06:52,907 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:06:52,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-31 01:06:53,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-08-31 01:06:53,112 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:06:53,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:06:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1693708765, now seen corresponding path program 18 times [2023-08-31 01:06:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:06:53,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180094971] [2023-08-31 01:06:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:06:53,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:06:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:06:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:06:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180094971] [2023-08-31 01:06:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180094971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:06:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576924725] [2023-08-31 01:06:53,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:06:53,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:06:53,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:06:53,434 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:06:53,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-31 01:06:53,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 01:06:53,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:06:53,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 01:06:53,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:06:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:06:53,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 01:06:53,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:06:53,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-08-31 01:06:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:53,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:06:53,990 WARN L839 $PredicateComparison]: unable to prove that (forall ((~scoreB~0.base Int) (v_ArrVal_3878 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3878))) (let ((.cse0 (select .cse1 ~scoreB~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem3#1| (+ (select .cse0 (+ c_~scoreB~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (< (select .cse0 c_~scoreB~0.offset) (select (select .cse1 c_~scoreA~0.base) c_~scoreA~0.offset)))))) is different from false [2023-08-31 01:06:54,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:06:54,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 143 [2023-08-31 01:06:54,043 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:06:54,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-08-31 01:06:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:06:54,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576924725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:06:54,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:06:54,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 25 [2023-08-31 01:06:54,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396337382] [2023-08-31 01:06:54,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:06:54,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-31 01:06:54,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:54,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-31 01:06:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=510, Unknown=1, NotChecked=46, Total=650 [2023-08-31 01:06:54,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-08-31 01:06:54,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 705 transitions, 23231 flow. Second operand has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:54,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:54,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-08-31 01:06:54,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:07:00,503 INFO L130 PetriNetUnfolder]: 3169/5564 cut-off events. [2023-08-31 01:07:00,503 INFO L131 PetriNetUnfolder]: For 183566/183566 co-relation queries the response was YES. [2023-08-31 01:07:00,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57994 conditions, 5564 events. 3169/5564 cut-off events. For 183566/183566 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33588 event pairs, 694 based on Foata normal form. 4/5568 useless extension candidates. Maximal degree in co-relation 57881. Up to 3304 conditions per place. [2023-08-31 01:07:00,566 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 294 selfloop transitions, 435 changer transitions 0/729 dead transitions. [2023-08-31 01:07:00,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 729 transitions, 24930 flow [2023-08-31 01:07:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:07:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:07:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1673 transitions. [2023-08-31 01:07:00,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34004065040650405 [2023-08-31 01:07:00,568 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1673 transitions. [2023-08-31 01:07:00,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1673 transitions. [2023-08-31 01:07:00,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:07:00,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1673 transitions. [2023-08-31 01:07:00,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.41666666666666) internal successors, (1673), 12 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:00,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:00,572 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:00,572 INFO L175 Difference]: Start difference. First operand has 461 places, 705 transitions, 23231 flow. Second operand 12 states and 1673 transitions. [2023-08-31 01:07:00,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 729 transitions, 24930 flow [2023-08-31 01:07:01,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 729 transitions, 24146 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-08-31 01:07:01,290 INFO L231 Difference]: Finished difference. Result has 458 places, 702 transitions, 23272 flow [2023-08-31 01:07:01,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=22402, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23272, PETRI_PLACES=458, PETRI_TRANSITIONS=702} [2023-08-31 01:07:01,290 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 432 predicate places. [2023-08-31 01:07:01,290 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 702 transitions, 23272 flow [2023-08-31 01:07:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:01,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:07:01,291 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:07:01,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-31 01:07:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:01,496 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:07:01,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:07:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1697579182, now seen corresponding path program 1 times [2023-08-31 01:07:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:07:01,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844743876] [2023-08-31 01:07:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:01,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:07:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:01,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:07:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844743876] [2023-08-31 01:07:01,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844743876] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:07:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242329161] [2023-08-31 01:07:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:01,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:07:01,941 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:07:01,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-31 01:07:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:02,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:07:02,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:07:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:02,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:07:03,054 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-08-31 01:07:03,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-08-31 01:07:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242329161] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:07:07,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:07:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 31 [2023-08-31 01:07:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050950689] [2023-08-31 01:07:07,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:07:07,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 01:07:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:07:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 01:07:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2023-08-31 01:07:08,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 410 [2023-08-31 01:07:08,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 702 transitions, 23272 flow. Second operand has 31 states, 31 states have (on average 150.16129032258064) internal successors, (4655), 31 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:08,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:07:08,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 410 [2023-08-31 01:07:08,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:07:13,443 INFO L130 PetriNetUnfolder]: 5860/10410 cut-off events. [2023-08-31 01:07:13,444 INFO L131 PetriNetUnfolder]: For 289307/289307 co-relation queries the response was YES. [2023-08-31 01:07:13,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97523 conditions, 10410 events. 5860/10410 cut-off events. For 289307/289307 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 70397 event pairs, 322 based on Foata normal form. 304/10714 useless extension candidates. Maximal degree in co-relation 97415. Up to 2557 conditions per place. [2023-08-31 01:07:13,566 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 623 selfloop transitions, 585 changer transitions 6/1214 dead transitions. [2023-08-31 01:07:13,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1214 transitions, 35146 flow [2023-08-31 01:07:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-31 01:07:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-31 01:07:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 6379 transitions. [2023-08-31 01:07:13,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379476502082094 [2023-08-31 01:07:13,569 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 6379 transitions. [2023-08-31 01:07:13,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 6379 transitions. [2023-08-31 01:07:13,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:07:13,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 6379 transitions. [2023-08-31 01:07:13,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 155.58536585365854) internal successors, (6379), 41 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:13,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:13,582 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:13,582 INFO L175 Difference]: Start difference. First operand has 458 places, 702 transitions, 23272 flow. Second operand 41 states and 6379 transitions. [2023-08-31 01:07:13,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1214 transitions, 35146 flow [2023-08-31 01:07:14,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1214 transitions, 33566 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-31 01:07:15,005 INFO L231 Difference]: Finished difference. Result has 506 places, 866 transitions, 27894 flow [2023-08-31 01:07:15,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=21842, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=27894, PETRI_PLACES=506, PETRI_TRANSITIONS=866} [2023-08-31 01:07:15,006 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 480 predicate places. [2023-08-31 01:07:15,006 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 866 transitions, 27894 flow [2023-08-31 01:07:15,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 150.16129032258064) internal successors, (4655), 31 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:15,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:07:15,007 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:07:15,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-31 01:07:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2023-08-31 01:07:15,212 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:07:15,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:07:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash -646389568, now seen corresponding path program 2 times [2023-08-31 01:07:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:07:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139658565] [2023-08-31 01:07:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:07:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:15,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:07:15,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139658565] [2023-08-31 01:07:15,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139658565] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:07:15,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329418487] [2023-08-31 01:07:15,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:07:15,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:15,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:07:15,722 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:07:15,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-31 01:07:15,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:07:15,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:07:15,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-31 01:07:16,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:07:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:16,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:07:16,670 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-08-31 01:07:16,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-08-31 01:07:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:19,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329418487] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:07:19,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:07:19,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2023-08-31 01:07:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113329081] [2023-08-31 01:07:19,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:07:19,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-31 01:07:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:07:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-31 01:07:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-08-31 01:07:20,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:07:20,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 866 transitions, 27894 flow. Second operand has 22 states, 22 states have (on average 158.13636363636363) internal successors, (3479), 22 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:20,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:07:20,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:07:20,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:07:26,336 INFO L130 PetriNetUnfolder]: 7368/13503 cut-off events. [2023-08-31 01:07:26,337 INFO L131 PetriNetUnfolder]: For 410816/410816 co-relation queries the response was YES. [2023-08-31 01:07:26,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127799 conditions, 13503 events. 7368/13503 cut-off events. For 410816/410816 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 100584 event pairs, 1753 based on Foata normal form. 230/13733 useless extension candidates. Maximal degree in co-relation 127670. Up to 4835 conditions per place. [2023-08-31 01:07:26,570 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 685 selfloop transitions, 604 changer transitions 0/1289 dead transitions. [2023-08-31 01:07:26,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1289 transitions, 38885 flow [2023-08-31 01:07:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-31 01:07:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-31 01:07:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4462 transitions. [2023-08-31 01:07:26,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4030713640469738 [2023-08-31 01:07:26,573 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4462 transitions. [2023-08-31 01:07:26,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4462 transitions. [2023-08-31 01:07:26,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:07:26,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4462 transitions. [2023-08-31 01:07:26,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 165.25925925925927) internal successors, (4462), 27 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:26,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:26,580 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:26,581 INFO L175 Difference]: Start difference. First operand has 506 places, 866 transitions, 27894 flow. Second operand 27 states and 4462 transitions. [2023-08-31 01:07:26,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1289 transitions, 38885 flow [2023-08-31 01:07:28,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 1289 transitions, 37369 flow, removed 300 selfloop flow, removed 23 redundant places. [2023-08-31 01:07:28,951 INFO L231 Difference]: Finished difference. Result has 522 places, 1084 transitions, 34957 flow [2023-08-31 01:07:28,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=26462, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=34957, PETRI_PLACES=522, PETRI_TRANSITIONS=1084} [2023-08-31 01:07:28,952 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 496 predicate places. [2023-08-31 01:07:28,952 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 1084 transitions, 34957 flow [2023-08-31 01:07:28,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 158.13636363636363) internal successors, (3479), 22 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:28,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:07:28,952 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:07:28,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-08-31 01:07:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:29,158 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:07:29,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:07:29,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1623553708, now seen corresponding path program 3 times [2023-08-31 01:07:29,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:07:29,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626374472] [2023-08-31 01:07:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:29,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:07:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:07:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:07:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626374472] [2023-08-31 01:07:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626374472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:07:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586161425] [2023-08-31 01:07:30,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:07:30,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:30,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:07:30,093 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:07:30,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-31 01:07:30,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:07:30,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:07:30,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:07:30,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:07:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:30,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:07:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586161425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:07:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:07:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-08-31 01:07:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682874166] [2023-08-31 01:07:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:07:30,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:07:30,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:07:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:07:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-08-31 01:07:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:07:31,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1084 transitions, 34957 flow. Second operand has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:31,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:07:31,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:07:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:07:37,069 INFO L130 PetriNetUnfolder]: 7340/13395 cut-off events. [2023-08-31 01:07:37,070 INFO L131 PetriNetUnfolder]: For 455900/455900 co-relation queries the response was YES. [2023-08-31 01:07:37,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132691 conditions, 13395 events. 7340/13395 cut-off events. For 455900/455900 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 99220 event pairs, 1364 based on Foata normal form. 2/13397 useless extension candidates. Maximal degree in co-relation 132551. Up to 6555 conditions per place. [2023-08-31 01:07:37,287 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 854 selfloop transitions, 263 changer transitions 2/1119 dead transitions. [2023-08-31 01:07:37,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1119 transitions, 37429 flow [2023-08-31 01:07:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:07:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:07:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1948 transitions. [2023-08-31 01:07:37,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3959349593495935 [2023-08-31 01:07:37,290 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1948 transitions. [2023-08-31 01:07:37,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1948 transitions. [2023-08-31 01:07:37,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:07:37,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1948 transitions. [2023-08-31 01:07:37,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:37,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:37,294 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:37,294 INFO L175 Difference]: Start difference. First operand has 522 places, 1084 transitions, 34957 flow. Second operand 12 states and 1948 transitions. [2023-08-31 01:07:37,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1119 transitions, 37429 flow [2023-08-31 01:07:40,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1119 transitions, 36571 flow, removed 327 selfloop flow, removed 7 redundant places. [2023-08-31 01:07:40,750 INFO L231 Difference]: Finished difference. Result has 524 places, 1074 transitions, 34311 flow [2023-08-31 01:07:40,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33813, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=34311, PETRI_PLACES=524, PETRI_TRANSITIONS=1074} [2023-08-31 01:07:40,751 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 498 predicate places. [2023-08-31 01:07:40,751 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 1074 transitions, 34311 flow [2023-08-31 01:07:40,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:40,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:07:40,751 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:07:40,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-31 01:07:40,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:40,953 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:07:40,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:07:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1737934884, now seen corresponding path program 4 times [2023-08-31 01:07:40,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:07:40,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436867964] [2023-08-31 01:07:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:07:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:07:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436867964] [2023-08-31 01:07:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436867964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:07:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602997464] [2023-08-31 01:07:41,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:07:41,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:41,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:07:41,456 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:07:41,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-31 01:07:41,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:07:41,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:07:41,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-31 01:07:41,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:07:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:07:41,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:07:42,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:07:42,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 294 [2023-08-31 01:10:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:10:15,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602997464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:10:15,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:10:15,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-08-31 01:10:15,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654012061] [2023-08-31 01:10:15,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:10:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-31 01:10:15,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:10:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-31 01:10:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2023-08-31 01:10:17,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 410 [2023-08-31 01:10:17,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1074 transitions, 34311 flow. Second operand has 27 states, 27 states have (on average 150.25925925925927) internal successors, (4057), 27 states have internal predecessors, (4057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:17,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:10:17,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 410 [2023-08-31 01:10:17,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:10:30,027 INFO L130 PetriNetUnfolder]: 8628/16066 cut-off events. [2023-08-31 01:10:30,027 INFO L131 PetriNetUnfolder]: For 503558/503558 co-relation queries the response was YES. [2023-08-31 01:10:30,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152963 conditions, 16066 events. 8628/16066 cut-off events. For 503558/503558 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 126381 event pairs, 1157 based on Foata normal form. 61/16127 useless extension candidates. Maximal degree in co-relation 152824. Up to 5442 conditions per place. [2023-08-31 01:10:30,248 INFO L137 encePairwiseOnDemand]: 394/410 looper letters, 694 selfloop transitions, 788 changer transitions 5/1487 dead transitions. [2023-08-31 01:10:30,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1487 transitions, 44364 flow [2023-08-31 01:10:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-08-31 01:10:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-08-31 01:10:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 8795 transitions. [2023-08-31 01:10:30,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37633718442447583 [2023-08-31 01:10:30,253 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 8795 transitions. [2023-08-31 01:10:30,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 8795 transitions. [2023-08-31 01:10:30,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:10:30,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 8795 transitions. [2023-08-31 01:10:30,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 154.2982456140351) internal successors, (8795), 57 states have internal predecessors, (8795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:30,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:30,270 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:30,271 INFO L175 Difference]: Start difference. First operand has 524 places, 1074 transitions, 34311 flow. Second operand 57 states and 8795 transitions. [2023-08-31 01:10:30,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1487 transitions, 44364 flow [2023-08-31 01:10:34,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1487 transitions, 43717 flow, removed 29 selfloop flow, removed 9 redundant places. [2023-08-31 01:10:34,255 INFO L231 Difference]: Finished difference. Result has 586 places, 1236 transitions, 40769 flow [2023-08-31 01:10:34,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33803, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=40769, PETRI_PLACES=586, PETRI_TRANSITIONS=1236} [2023-08-31 01:10:34,256 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 560 predicate places. [2023-08-31 01:10:34,256 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1236 transitions, 40769 flow [2023-08-31 01:10:34,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 150.25925925925927) internal successors, (4057), 27 states have internal predecessors, (4057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:34,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:10:34,257 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:10:34,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-31 01:10:34,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:10:34,462 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:10:34,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:10:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 108172946, now seen corresponding path program 5 times [2023-08-31 01:10:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:10:34,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391989659] [2023-08-31 01:10:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:10:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:10:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:10:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:10:35,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:10:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391989659] [2023-08-31 01:10:35,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391989659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:10:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342362828] [2023-08-31 01:10:35,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:10:35,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:10:35,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:10:35,275 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:10:35,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-31 01:10:35,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-31 01:10:35,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:10:35,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:10:35,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:10:35,894 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 01:10:35,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-31 01:10:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:10:35,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:10:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342362828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:10:35,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:10:35,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2023-08-31 01:10:35,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564081832] [2023-08-31 01:10:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:10:35,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:10:35,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:10:35,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:10:35,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-08-31 01:10:36,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:10:36,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1236 transitions, 40769 flow. Second operand has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:36,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:10:36,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:10:36,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:10:43,627 INFO L130 PetriNetUnfolder]: 8611/16026 cut-off events. [2023-08-31 01:10:43,627 INFO L131 PetriNetUnfolder]: For 562182/562182 co-relation queries the response was YES. [2023-08-31 01:10:43,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159836 conditions, 16026 events. 8611/16026 cut-off events. For 562182/562182 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 125662 event pairs, 1745 based on Foata normal form. 2/16028 useless extension candidates. Maximal degree in co-relation 159680. Up to 8088 conditions per place. [2023-08-31 01:10:43,910 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 997 selfloop transitions, 264 changer transitions 4/1265 dead transitions. [2023-08-31 01:10:43,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1265 transitions, 43501 flow [2023-08-31 01:10:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:10:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:10:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1767 transitions. [2023-08-31 01:10:43,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3917960088691796 [2023-08-31 01:10:43,913 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1767 transitions. [2023-08-31 01:10:43,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1767 transitions. [2023-08-31 01:10:43,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:10:43,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1767 transitions. [2023-08-31 01:10:43,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 160.63636363636363) internal successors, (1767), 11 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:43,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:43,918 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:43,918 INFO L175 Difference]: Start difference. First operand has 586 places, 1236 transitions, 40769 flow. Second operand 11 states and 1767 transitions. [2023-08-31 01:10:43,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1265 transitions, 43501 flow [2023-08-31 01:10:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1265 transitions, 42610 flow, removed 200 selfloop flow, removed 22 redundant places. [2023-08-31 01:10:49,427 INFO L231 Difference]: Finished difference. Result has 572 places, 1231 transitions, 40185 flow [2023-08-31 01:10:49,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39719, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=969, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=40185, PETRI_PLACES=572, PETRI_TRANSITIONS=1231} [2023-08-31 01:10:49,428 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 546 predicate places. [2023-08-31 01:10:49,429 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 1231 transitions, 40185 flow [2023-08-31 01:10:49,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:49,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:10:49,430 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:10:49,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-31 01:10:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:10:49,635 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:10:49,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:10:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2048500918, now seen corresponding path program 6 times [2023-08-31 01:10:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:10:49,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32525140] [2023-08-31 01:10:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:10:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:10:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:10:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:10:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:10:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32525140] [2023-08-31 01:10:50,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32525140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:10:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396759935] [2023-08-31 01:10:50,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:10:50,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:10:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:10:50,325 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:10:50,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-31 01:10:50,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 01:10:50,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:10:50,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:10:50,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:10:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:10:50,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:10:50,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396759935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:10:50,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:10:50,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-08-31 01:10:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703628295] [2023-08-31 01:10:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:10:50,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:10:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:10:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:10:50,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2023-08-31 01:10:51,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:10:51,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1231 transitions, 40185 flow. Second operand has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:51,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:10:51,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:10:51,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:10:58,534 INFO L130 PetriNetUnfolder]: 8581/15912 cut-off events. [2023-08-31 01:10:58,535 INFO L131 PetriNetUnfolder]: For 571878/571878 co-relation queries the response was YES. [2023-08-31 01:10:58,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158818 conditions, 15912 events. 8581/15912 cut-off events. For 571878/571878 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 124171 event pairs, 1743 based on Foata normal form. 2/15914 useless extension candidates. Maximal degree in co-relation 158663. Up to 8076 conditions per place. [2023-08-31 01:10:58,809 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 991 selfloop transitions, 268 changer transitions 2/1261 dead transitions. [2023-08-31 01:10:58,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1261 transitions, 42891 flow [2023-08-31 01:10:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:10:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:10:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1928 transitions. [2023-08-31 01:10:58,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39186991869918697 [2023-08-31 01:10:58,811 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1928 transitions. [2023-08-31 01:10:58,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1928 transitions. [2023-08-31 01:10:58,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:10:58,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1928 transitions. [2023-08-31 01:10:58,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 160.66666666666666) internal successors, (1928), 12 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:58,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:58,815 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:10:58,815 INFO L175 Difference]: Start difference. First operand has 572 places, 1231 transitions, 40185 flow. Second operand 12 states and 1928 transitions. [2023-08-31 01:10:58,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1261 transitions, 42891 flow [2023-08-31 01:11:03,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1261 transitions, 42302 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-08-31 01:11:03,773 INFO L231 Difference]: Finished difference. Result has 566 places, 1224 transitions, 39885 flow [2023-08-31 01:11:03,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39381, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=39885, PETRI_PLACES=566, PETRI_TRANSITIONS=1224} [2023-08-31 01:11:03,774 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 540 predicate places. [2023-08-31 01:11:03,774 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1224 transitions, 39885 flow [2023-08-31 01:11:03,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:11:03,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:11:03,775 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:11:03,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-08-31 01:11:03,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-08-31 01:11:03,980 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:11:03,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:11:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1314119378, now seen corresponding path program 7 times [2023-08-31 01:11:03,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:11:03,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393030047] [2023-08-31 01:11:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:11:03,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:11:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:11:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:11:05,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:11:05,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393030047] [2023-08-31 01:11:05,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393030047] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:11:05,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487262654] [2023-08-31 01:11:05,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 01:11:05,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:11:05,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:11:05,072 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:11:05,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-31 01:11:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:11:05,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:11:05,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:11:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:11:05,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:11:06,305 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-08-31 01:11:06,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-08-31 01:11:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:11:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487262654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:11:12,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:11:12,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 9] total 40 [2023-08-31 01:11:12,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568101016] [2023-08-31 01:11:12,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:11:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-31 01:11:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:11:12,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-31 01:11:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2023-08-31 01:11:16,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 410 [2023-08-31 01:11:16,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1224 transitions, 39885 flow. Second operand has 40 states, 40 states have (on average 136.7) internal successors, (5468), 40 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:11:16,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:11:16,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 410 [2023-08-31 01:11:16,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:11:35,558 INFO L130 PetriNetUnfolder]: 17535/32591 cut-off events. [2023-08-31 01:11:35,559 INFO L131 PetriNetUnfolder]: For 1155863/1155863 co-relation queries the response was YES. [2023-08-31 01:11:36,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322804 conditions, 32591 events. 17535/32591 cut-off events. For 1155863/1155863 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 285719 event pairs, 2400 based on Foata normal form. 132/32723 useless extension candidates. Maximal degree in co-relation 322652. Up to 7529 conditions per place. [2023-08-31 01:11:36,343 INFO L137 encePairwiseOnDemand]: 392/410 looper letters, 1343 selfloop transitions, 1432 changer transitions 0/2775 dead transitions. [2023-08-31 01:11:36,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 2775 transitions, 89448 flow [2023-08-31 01:11:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-31 01:11:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-31 01:11:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 8946 transitions. [2023-08-31 01:11:36,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463414634146341 [2023-08-31 01:11:36,349 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 8946 transitions. [2023-08-31 01:11:36,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 8946 transitions. [2023-08-31 01:11:36,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:11:36,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 8946 transitions. [2023-08-31 01:11:36,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 142.0) internal successors, (8946), 63 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:11:36,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:11:36,365 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:11:36,365 INFO L175 Difference]: Start difference. First operand has 566 places, 1224 transitions, 39885 flow. Second operand 63 states and 8946 transitions. [2023-08-31 01:11:36,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 2775 transitions, 89448 flow [2023-08-31 01:11:53,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 2775 transitions, 87744 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-08-31 01:11:53,674 INFO L231 Difference]: Finished difference. Result has 618 places, 1964 transitions, 66905 flow [2023-08-31 01:11:53,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=38716, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=683, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=66905, PETRI_PLACES=618, PETRI_TRANSITIONS=1964} [2023-08-31 01:11:53,675 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 592 predicate places. [2023-08-31 01:11:53,675 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1964 transitions, 66905 flow [2023-08-31 01:11:53,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 136.7) internal successors, (5468), 40 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:11:53,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:11:53,676 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:11:53,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-08-31 01:11:53,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-08-31 01:11:53,881 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:11:53,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:11:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2121312068, now seen corresponding path program 8 times [2023-08-31 01:11:53,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:11:53,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824185969] [2023-08-31 01:11:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:11:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:11:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:11:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:11:54,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:11:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824185969] [2023-08-31 01:11:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824185969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:11:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988897213] [2023-08-31 01:11:54,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:11:54,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:11:54,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:11:54,586 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:11:54,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-31 01:11:54,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:11:54,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:11:54,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-31 01:11:54,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:11:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:11:55,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:11:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988897213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:11:55,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:11:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-08-31 01:11:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371238816] [2023-08-31 01:11:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:11:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:11:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:11:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:11:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-08-31 01:11:55,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 410 [2023-08-31 01:11:55,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1964 transitions, 66905 flow. Second operand has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:11:55,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:11:55,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 410 [2023-08-31 01:11:55,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:12:14,850 INFO L130 PetriNetUnfolder]: 17519/32559 cut-off events. [2023-08-31 01:12:14,850 INFO L131 PetriNetUnfolder]: For 1171995/1171995 co-relation queries the response was YES. [2023-08-31 01:12:15,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328746 conditions, 32559 events. 17519/32559 cut-off events. For 1171995/1171995 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 285267 event pairs, 3604 based on Foata normal form. 4/32563 useless extension candidates. Maximal degree in co-relation 328592. Up to 16643 conditions per place. [2023-08-31 01:12:15,849 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 1435 selfloop transitions, 558 changer transitions 3/1996 dead transitions. [2023-08-31 01:12:15,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1996 transitions, 71085 flow [2023-08-31 01:12:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:12:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:12:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2083 transitions. [2023-08-31 01:12:15,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908067542213884 [2023-08-31 01:12:15,852 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2083 transitions. [2023-08-31 01:12:15,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2083 transitions. [2023-08-31 01:12:15,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:12:15,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2083 transitions. [2023-08-31 01:12:15,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.23076923076923) internal successors, (2083), 13 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:15,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:15,856 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:15,856 INFO L175 Difference]: Start difference. First operand has 618 places, 1964 transitions, 66905 flow. Second operand 13 states and 2083 transitions. [2023-08-31 01:12:15,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1996 transitions, 71085 flow [2023-08-31 01:12:34,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 1996 transitions, 70431 flow, removed 52 selfloop flow, removed 20 redundant places. [2023-08-31 01:12:34,287 INFO L231 Difference]: Finished difference. Result has 610 places, 1958 transitions, 67115 flow [2023-08-31 01:12:34,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=66057, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=67115, PETRI_PLACES=610, PETRI_TRANSITIONS=1958} [2023-08-31 01:12:34,289 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 584 predicate places. [2023-08-31 01:12:34,289 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 1958 transitions, 67115 flow [2023-08-31 01:12:34,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:34,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:12:34,289 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:12:34,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-31 01:12:34,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-08-31 01:12:34,497 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:12:34,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:12:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash -16981364, now seen corresponding path program 9 times [2023-08-31 01:12:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:12:34,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102713762] [2023-08-31 01:12:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:12:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:12:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:12:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:12:34,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:12:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102713762] [2023-08-31 01:12:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102713762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:12:34,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:12:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:12:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817850643] [2023-08-31 01:12:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:12:34,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:12:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:12:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:12:34,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:12:35,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:12:35,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 1958 transitions, 67115 flow. Second operand has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:35,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:12:35,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:12:35,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:12:58,690 INFO L130 PetriNetUnfolder]: 17461/32337 cut-off events. [2023-08-31 01:12:58,691 INFO L131 PetriNetUnfolder]: For 1210221/1210221 co-relation queries the response was YES. [2023-08-31 01:12:59,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331100 conditions, 32337 events. 17461/32337 cut-off events. For 1210221/1210221 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 281993 event pairs, 7734 based on Foata normal form. 4/32341 useless extension candidates. Maximal degree in co-relation 330949. Up to 30373 conditions per place. [2023-08-31 01:12:59,709 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1602 selfloop transitions, 359 changer transitions 8/1969 dead transitions. [2023-08-31 01:12:59,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1969 transitions, 70934 flow [2023-08-31 01:12:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:12:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:12:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1945 transitions. [2023-08-31 01:12:59,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953252032520325 [2023-08-31 01:12:59,712 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1945 transitions. [2023-08-31 01:12:59,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1945 transitions. [2023-08-31 01:12:59,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:12:59,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1945 transitions. [2023-08-31 01:12:59,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 162.08333333333334) internal successors, (1945), 12 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:59,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:59,717 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:12:59,717 INFO L175 Difference]: Start difference. First operand has 610 places, 1958 transitions, 67115 flow. Second operand 12 states and 1945 transitions. [2023-08-31 01:12:59,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1969 transitions, 70934 flow [2023-08-31 01:13:17,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1969 transitions, 69603 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-08-31 01:13:17,376 INFO L231 Difference]: Finished difference. Result has 604 places, 1941 transitions, 65915 flow [2023-08-31 01:13:17,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65401, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=65915, PETRI_PLACES=604, PETRI_TRANSITIONS=1941} [2023-08-31 01:13:17,377 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 578 predicate places. [2023-08-31 01:13:17,377 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 1941 transitions, 65915 flow [2023-08-31 01:13:17,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:17,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:13:17,378 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:13:17,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-08-31 01:13:17,378 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:13:17,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:13:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash -259348282, now seen corresponding path program 10 times [2023-08-31 01:13:17,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:13:17,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075930444] [2023-08-31 01:13:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:13:17,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:13:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:13:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:13:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:13:17,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075930444] [2023-08-31 01:13:17,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075930444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:13:17,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:13:17,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:13:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749141138] [2023-08-31 01:13:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:13:17,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:13:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:13:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:13:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:13:18,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:13:18,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1941 transitions, 65915 flow. Second operand has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:18,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:13:18,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:13:18,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:13:36,503 INFO L130 PetriNetUnfolder]: 17457/32339 cut-off events. [2023-08-31 01:13:36,503 INFO L131 PetriNetUnfolder]: For 1155927/1155927 co-relation queries the response was YES. [2023-08-31 01:13:37,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325912 conditions, 32339 events. 17457/32339 cut-off events. For 1155927/1155927 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 282139 event pairs, 7730 based on Foata normal form. 4/32343 useless extension candidates. Maximal degree in co-relation 325761. Up to 30373 conditions per place. [2023-08-31 01:13:37,332 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1634 selfloop transitions, 318 changer transitions 12/1964 dead transitions. [2023-08-31 01:13:37,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 1964 transitions, 70175 flow [2023-08-31 01:13:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:13:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:13:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1621 transitions. [2023-08-31 01:13:37,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953658536585366 [2023-08-31 01:13:37,334 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1621 transitions. [2023-08-31 01:13:37,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1621 transitions. [2023-08-31 01:13:37,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:13:37,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1621 transitions. [2023-08-31 01:13:37,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 162.1) internal successors, (1621), 10 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:37,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:37,338 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:37,338 INFO L175 Difference]: Start difference. First operand has 604 places, 1941 transitions, 65915 flow. Second operand 10 states and 1621 transitions. [2023-08-31 01:13:37,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 1964 transitions, 70175 flow [2023-08-31 01:13:52,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1964 transitions, 69449 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-31 01:13:52,968 INFO L231 Difference]: Finished difference. Result has 598 places, 1937 transitions, 65751 flow [2023-08-31 01:13:52,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65197, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=65751, PETRI_PLACES=598, PETRI_TRANSITIONS=1937} [2023-08-31 01:13:52,969 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 572 predicate places. [2023-08-31 01:13:52,970 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 1937 transitions, 65751 flow [2023-08-31 01:13:52,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:52,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:13:52,970 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:13:52,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-08-31 01:13:52,970 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:13:52,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:13:52,971 INFO L85 PathProgramCache]: Analyzing trace with hash -239187364, now seen corresponding path program 11 times [2023-08-31 01:13:52,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:13:52,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520186122] [2023-08-31 01:13:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:13:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:13:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:13:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:13:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:13:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520186122] [2023-08-31 01:13:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520186122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:13:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699376771] [2023-08-31 01:13:53,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:13:53,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:13:53,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:13:53,784 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:13:53,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-31 01:13:54,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-31 01:13:54,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:13:54,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:13:54,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:13:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:13:54,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:13:54,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699376771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:13:54,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:13:54,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2023-08-31 01:13:54,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505387829] [2023-08-31 01:13:54,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:13:54,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:13:54,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:13:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:13:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-08-31 01:13:54,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 410 [2023-08-31 01:13:54,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1937 transitions, 65751 flow. Second operand has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:54,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:13:54,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 410 [2023-08-31 01:13:54,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:14:13,749 INFO L130 PetriNetUnfolder]: 17501/32397 cut-off events. [2023-08-31 01:14:13,750 INFO L131 PetriNetUnfolder]: For 1165850/1165850 co-relation queries the response was YES. [2023-08-31 01:14:14,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326721 conditions, 32397 events. 17501/32397 cut-off events. For 1165850/1165850 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 282329 event pairs, 3616 based on Foata normal form. 4/32401 useless extension candidates. Maximal degree in co-relation 326569. Up to 16687 conditions per place. [2023-08-31 01:14:14,616 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 1446 selfloop transitions, 532 changer transitions 2/1980 dead transitions. [2023-08-31 01:14:14,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 1980 transitions, 70363 flow [2023-08-31 01:14:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:14:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:14:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1750 transitions. [2023-08-31 01:14:14,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38802660753880264 [2023-08-31 01:14:14,618 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1750 transitions. [2023-08-31 01:14:14,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1750 transitions. [2023-08-31 01:14:14,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:14:14,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1750 transitions. [2023-08-31 01:14:14,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 159.0909090909091) internal successors, (1750), 11 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:14,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:14,621 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:14,621 INFO L175 Difference]: Start difference. First operand has 598 places, 1937 transitions, 65751 flow. Second operand 11 states and 1750 transitions. [2023-08-31 01:14:14,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 1980 transitions, 70363 flow [2023-08-31 01:14:31,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1980 transitions, 69719 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-31 01:14:31,793 INFO L231 Difference]: Finished difference. Result has 601 places, 1945 transitions, 66514 flow [2023-08-31 01:14:31,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=64993, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=66514, PETRI_PLACES=601, PETRI_TRANSITIONS=1945} [2023-08-31 01:14:31,795 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 575 predicate places. [2023-08-31 01:14:31,796 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1945 transitions, 66514 flow [2023-08-31 01:14:31,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:31,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:14:31,796 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:14:31,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-31 01:14:32,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:14:32,001 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:14:32,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:14:32,001 INFO L85 PathProgramCache]: Analyzing trace with hash 980571048, now seen corresponding path program 12 times [2023-08-31 01:14:32,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:14:32,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634525816] [2023-08-31 01:14:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:14:32,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:14:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:14:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 01:14:32,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:14:32,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634525816] [2023-08-31 01:14:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634525816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:14:32,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197111985] [2023-08-31 01:14:32,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:14:32,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:14:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:14:32,765 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:14:32,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-31 01:14:33,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 01:14:33,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:14:33,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-31 01:14:33,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:14:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:14:33,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:14:33,823 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-08-31 01:14:33,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-08-31 01:14:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:14:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197111985] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:14:35,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:14:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 9] total 31 [2023-08-31 01:14:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31422671] [2023-08-31 01:14:35,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:14:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 01:14:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:14:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 01:14:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-08-31 01:14:37,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 410 [2023-08-31 01:14:37,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 1945 transitions, 66514 flow. Second operand has 31 states, 31 states have (on average 148.90322580645162) internal successors, (4616), 31 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:37,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:14:37,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 410 [2023-08-31 01:14:37,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:14:58,213 INFO L130 PetriNetUnfolder]: 17961/33445 cut-off events. [2023-08-31 01:14:58,214 INFO L131 PetriNetUnfolder]: For 1266601/1266601 co-relation queries the response was YES. [2023-08-31 01:14:58,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342055 conditions, 33445 events. 17961/33445 cut-off events. For 1266601/1266601 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 294933 event pairs, 5708 based on Foata normal form. 264/33709 useless extension candidates. Maximal degree in co-relation 341901. Up to 23093 conditions per place. [2023-08-31 01:14:59,160 INFO L137 encePairwiseOnDemand]: 394/410 looper letters, 988 selfloop transitions, 1099 changer transitions 0/2087 dead transitions. [2023-08-31 01:14:59,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 2087 transitions, 74090 flow [2023-08-31 01:14:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 01:14:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 01:14:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2613 transitions. [2023-08-31 01:14:59,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37489239598278334 [2023-08-31 01:14:59,162 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2613 transitions. [2023-08-31 01:14:59,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2613 transitions. [2023-08-31 01:14:59,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:14:59,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2613 transitions. [2023-08-31 01:14:59,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 153.7058823529412) internal successors, (2613), 17 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:59,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:59,167 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:59,167 INFO L175 Difference]: Start difference. First operand has 601 places, 1945 transitions, 66514 flow. Second operand 17 states and 2613 transitions. [2023-08-31 01:14:59,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 2087 transitions, 74090 flow [2023-08-31 01:15:16,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 2087 transitions, 73259 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-08-31 01:15:16,235 INFO L231 Difference]: Finished difference. Result has 614 places, 1999 transitions, 70780 flow [2023-08-31 01:15:16,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65473, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=70780, PETRI_PLACES=614, PETRI_TRANSITIONS=1999} [2023-08-31 01:15:16,236 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 588 predicate places. [2023-08-31 01:15:16,236 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 1999 transitions, 70780 flow [2023-08-31 01:15:16,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 148.90322580645162) internal successors, (4616), 31 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:16,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:16,237 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:16,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-31 01:15:16,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:15:16,443 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:15:16,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2134886524, now seen corresponding path program 13 times [2023-08-31 01:15:16,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:16,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027045980] [2023-08-31 01:15:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:16,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027045980] [2023-08-31 01:15:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027045980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:15:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538307363] [2023-08-31 01:15:17,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 01:15:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:15:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:15:17,521 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:15:17,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-31 01:15:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:17,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-31 01:15:17,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:15:18,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:15:18,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 51 [2023-08-31 01:15:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:15:18,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:15:18,699 INFO L321 Elim1Store]: treesize reduction 11, result has 91.3 percent of original size [2023-08-31 01:15:18,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 147 [2023-08-31 01:15:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:15:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538307363] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:15:19,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:15:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 10] total 43 [2023-08-31 01:15:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821765552] [2023-08-31 01:15:19,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:15:19,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-31 01:15:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-31 01:15:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2023-08-31 01:15:23,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 410 [2023-08-31 01:15:23,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 1999 transitions, 70780 flow. Second operand has 43 states, 43 states have (on average 139.8372093023256) internal successors, (6013), 43 states have internal predecessors, (6013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:23,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:23,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 410 [2023-08-31 01:15:23,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:42,324 INFO L130 PetriNetUnfolder]: 14445/27839 cut-off events. [2023-08-31 01:15:42,324 INFO L131 PetriNetUnfolder]: For 1078274/1078274 co-relation queries the response was YES. [2023-08-31 01:15:42,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284900 conditions, 27839 events. 14445/27839 cut-off events. For 1078274/1078274 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 247579 event pairs, 1122 based on Foata normal form. 186/28025 useless extension candidates. Maximal degree in co-relation 284742. Up to 6539 conditions per place. [2023-08-31 01:15:43,062 INFO L137 encePairwiseOnDemand]: 393/410 looper letters, 545 selfloop transitions, 1262 changer transitions 45/1852 dead transitions. [2023-08-31 01:15:43,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 1852 transitions, 67133 flow [2023-08-31 01:15:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-31 01:15:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-31 01:15:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5140 transitions. [2023-08-31 01:15:43,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34823848238482386 [2023-08-31 01:15:43,065 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5140 transitions. [2023-08-31 01:15:43,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5140 transitions. [2023-08-31 01:15:43,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:43,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5140 transitions. [2023-08-31 01:15:43,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 142.77777777777777) internal successors, (5140), 36 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:43,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 410.0) internal successors, (15170), 37 states have internal predecessors, (15170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:43,075 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 410.0) internal successors, (15170), 37 states have internal predecessors, (15170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:43,075 INFO L175 Difference]: Start difference. First operand has 614 places, 1999 transitions, 70780 flow. Second operand 36 states and 5140 transitions. [2023-08-31 01:15:43,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 1852 transitions, 67133 flow [2023-08-31 01:15:57,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 1852 transitions, 66089 flow, removed 159 selfloop flow, removed 13 redundant places. [2023-08-31 01:15:57,082 INFO L231 Difference]: Finished difference. Result has 633 places, 1728 transitions, 62989 flow [2023-08-31 01:15:57,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=60611, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=62989, PETRI_PLACES=633, PETRI_TRANSITIONS=1728} [2023-08-31 01:15:57,084 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 607 predicate places. [2023-08-31 01:15:57,084 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 1728 transitions, 62989 flow [2023-08-31 01:15:57,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 139.8372093023256) internal successors, (6013), 43 states have internal predecessors, (6013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:57,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:57,085 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:57,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-08-31 01:15:57,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2023-08-31 01:15:57,291 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:15:57,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:57,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1636900852, now seen corresponding path program 14 times [2023-08-31 01:15:57,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:57,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871322683] [2023-08-31 01:15:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 01:15:57,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:57,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871322683] [2023-08-31 01:15:57,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871322683] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:15:57,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953660470] [2023-08-31 01:15:57,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:15:57,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:15:57,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:15:57,927 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:15:57,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-31 01:15:58,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:15:58,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:15:58,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:15:58,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:15:58,599 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 01:15:58,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-31 01:15:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:15:58,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:15:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953660470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:15:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-08-31 01:15:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344697362] [2023-08-31 01:15:58,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:58,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:15:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:15:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2023-08-31 01:15:59,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 410 [2023-08-31 01:15:59,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1728 transitions, 62989 flow. Second operand has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:59,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:59,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 410 [2023-08-31 01:15:59,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:15,312 INFO L130 PetriNetUnfolder]: 14279/27263 cut-off events. [2023-08-31 01:16:15,312 INFO L131 PetriNetUnfolder]: For 1079259/1079259 co-relation queries the response was YES. [2023-08-31 01:16:15,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280700 conditions, 27263 events. 14279/27263 cut-off events. For 1079259/1079259 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 238600 event pairs, 2858 based on Foata normal form. 4/27267 useless extension candidates. Maximal degree in co-relation 280545. Up to 13323 conditions per place. [2023-08-31 01:16:16,206 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1237 selfloop transitions, 501 changer transitions 10/1748 dead transitions. [2023-08-31 01:16:16,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 1748 transitions, 66348 flow [2023-08-31 01:16:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:16:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:16:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1770 transitions. [2023-08-31 01:16:16,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924611973392461 [2023-08-31 01:16:16,208 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1770 transitions. [2023-08-31 01:16:16,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1770 transitions. [2023-08-31 01:16:16,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:16,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1770 transitions. [2023-08-31 01:16:16,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 160.9090909090909) internal successors, (1770), 11 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:16,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:16,212 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:16,212 INFO L175 Difference]: Start difference. First operand has 633 places, 1728 transitions, 62989 flow. Second operand 11 states and 1770 transitions. [2023-08-31 01:16:16,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 1748 transitions, 66348 flow [2023-08-31 01:16:30,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 1748 transitions, 63790 flow, removed 47 selfloop flow, removed 30 redundant places. [2023-08-31 01:16:30,987 INFO L231 Difference]: Finished difference. Result has 606 places, 1713 transitions, 60858 flow [2023-08-31 01:16:30,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=60075, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=60858, PETRI_PLACES=606, PETRI_TRANSITIONS=1713} [2023-08-31 01:16:30,988 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 580 predicate places. [2023-08-31 01:16:30,989 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 1713 transitions, 60858 flow [2023-08-31 01:16:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:30,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:30,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:30,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-08-31 01:16:31,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:16:31,195 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:16:31,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash 14877656, now seen corresponding path program 15 times [2023-08-31 01:16:31,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990609463] [2023-08-31 01:16:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-31 01:16:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990609463] [2023-08-31 01:16:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990609463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:31,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:31,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:16:31,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43166719] [2023-08-31 01:16:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:31,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:16:31,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:16:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:16:31,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 410 [2023-08-31 01:16:31,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 1713 transitions, 60858 flow. Second operand has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:31,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:31,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 410 [2023-08-31 01:16:31,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:46,484 INFO L130 PetriNetUnfolder]: 14269/27239 cut-off events. [2023-08-31 01:16:46,484 INFO L131 PetriNetUnfolder]: For 1046095/1046095 co-relation queries the response was YES. [2023-08-31 01:16:47,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274851 conditions, 27239 events. 14269/27239 cut-off events. For 1046095/1046095 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 238544 event pairs, 6528 based on Foata normal form. 4/27243 useless extension candidates. Maximal degree in co-relation 274709. Up to 25297 conditions per place. [2023-08-31 01:16:47,166 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 1477 selfloop transitions, 233 changer transitions 13/1723 dead transitions. [2023-08-31 01:16:47,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 1723 transitions, 64276 flow [2023-08-31 01:16:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:16:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:16:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1618 transitions. [2023-08-31 01:16:47,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39463414634146343 [2023-08-31 01:16:47,168 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1618 transitions. [2023-08-31 01:16:47,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1618 transitions. [2023-08-31 01:16:47,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:47,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1618 transitions. [2023-08-31 01:16:47,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.8) internal successors, (1618), 10 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:47,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:47,172 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:16:47,172 INFO L175 Difference]: Start difference. First operand has 606 places, 1713 transitions, 60858 flow. Second operand 10 states and 1618 transitions. [2023-08-31 01:16:47,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 1723 transitions, 64276 flow Killed by 15