./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i -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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:11:35,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:11:35,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:11:35,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:11:35,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:11:35,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:11:35,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:11:35,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:11:35,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:11:35,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:11:35,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:11:35,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:11:35,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:11:35,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:11:35,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:11:35,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:11:35,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:11:35,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:11:35,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:11:35,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:11:35,979 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:11:35,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:11:35,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:11:35,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:11:35,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:11:35,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:11:35,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:11:35,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:11:35,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:11:35,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:11:35,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:11:35,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:11:35,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:11:35,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:11:35,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:11:35,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:11:35,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:11:35,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:11:35,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:11:35,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:11:35,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:11:35,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:11:36,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:11:36,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:11:36,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:11:36,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:11:36,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:11:36,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:11:36,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:11:36,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:11:36,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:11:36,044 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:11:36,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:11:36,045 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:11:36,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:11:36,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:11:36,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:11:36,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:11:36,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:11:36,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:11:36,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:11:36,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:11:36,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:11:36,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:11:36,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:11:36,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:11:36,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:11:36,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:36,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:11:36,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:11:36,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:11:36,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:11:36,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:11:36,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:11:36,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:11:36,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:11:36,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2022-07-19 21:11:36,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:11:36,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:11:36,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:11:36,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:11:36,324 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:11:36,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2022-07-19 21:11:36,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db32b58f/e51cd11920024cac81b57f24d1901165/FLAG43fa650bf [2022-07-19 21:11:36,908 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:11:36,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2022-07-19 21:11:36,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db32b58f/e51cd11920024cac81b57f24d1901165/FLAG43fa650bf [2022-07-19 21:11:37,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db32b58f/e51cd11920024cac81b57f24d1901165 [2022-07-19 21:11:37,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:11:37,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:11:37,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:37,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:11:37,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:11:37,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f847e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37, skipping insertion in model container [2022-07-19 21:11:37,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:11:37,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:11:37,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2022-07-19 21:11:37,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:37,843 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:11:37,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2022-07-19 21:11:37,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:37,967 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:11:37,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37 WrapperNode [2022-07-19 21:11:37,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:37,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:37,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:11:37,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:11:37,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,052 INFO L137 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 225 [2022-07-19 21:11:38,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:38,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:11:38,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:11:38,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:11:38,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:11:38,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:11:38,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:11:38,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:11:38,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:11:38,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:11:38,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:11:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:11:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:11:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:11:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:11:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:11:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:11:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:11:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:11:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:11:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:11:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:11:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:11:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:11:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:11:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:11:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:11:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:11:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:11:38,195 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:11:38,411 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:11:38,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:11:39,005 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:11:39,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:11:39,719 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:11:39,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:39 BoogieIcfgContainer [2022-07-19 21:11:39,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:11:39,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:11:39,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:11:39,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:11:39,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:37" (1/3) ... [2022-07-19 21:11:39,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25356261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:39, skipping insertion in model container [2022-07-19 21:11:39,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (2/3) ... [2022-07-19 21:11:39,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25356261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:39, skipping insertion in model container [2022-07-19 21:11:39,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:39" (3/3) ... [2022-07-19 21:11:39,731 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2022-07-19 21:11:39,736 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:11:39,744 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:11:39,745 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:11:39,745 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:11:39,850 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:11:39,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 152 transitions, 324 flow [2022-07-19 21:11:39,969 INFO L129 PetriNetUnfolder]: 2/148 cut-off events. [2022-07-19 21:11:39,970 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:39,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 2/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-07-19 21:11:39,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 152 transitions, 324 flow [2022-07-19 21:11:39,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 148 transitions, 308 flow [2022-07-19 21:11:39,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:11:40,005 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43b586b6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56a461cc [2022-07-19 21:11:40,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:11:40,026 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2022-07-19 21:11:40,026 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:40,027 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:40,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:40,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:40,034 INFO L85 PathProgramCache]: Analyzing trace with hash -397280163, now seen corresponding path program 1 times [2022-07-19 21:11:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:40,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980767661] [2022-07-19 21:11:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:40,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:40,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980767661] [2022-07-19 21:11:40,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980767661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:40,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:40,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:11:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782700200] [2022-07-19 21:11:40,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:40,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:11:40,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:40,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:11:40,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:11:40,432 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 152 [2022-07-19 21:11:40,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 148 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:40,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 152 [2022-07-19 21:11:40,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:40,821 INFO L129 PetriNetUnfolder]: 258/1462 cut-off events. [2022-07-19 21:11:40,822 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-07-19 21:11:40,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1462 events. 258/1462 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11092 event pairs, 172 based on Foata normal form. 40/1403 useless extension candidates. Maximal degree in co-relation 1839. Up to 289 conditions per place. [2022-07-19 21:11:40,837 INFO L132 encePairwiseOnDemand]: 147/152 looper letters, 19 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2022-07-19 21:11:40,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 152 transitions, 364 flow [2022-07-19 21:11:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:11:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:11:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-19 21:11:40,851 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9451754385964912 [2022-07-19 21:11:40,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-19 21:11:40,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-19 21:11:40,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:40,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-19 21:11:40,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,868 INFO L186 Difference]: Start difference. First operand has 159 places, 148 transitions, 308 flow. Second operand 3 states and 431 transitions. [2022-07-19 21:11:40,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 152 transitions, 364 flow [2022-07-19 21:11:40,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:40,876 INFO L242 Difference]: Finished difference. Result has 155 places, 144 transitions, 300 flow [2022-07-19 21:11:40,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=155, PETRI_TRANSITIONS=144} [2022-07-19 21:11:40,881 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, -4 predicate places. [2022-07-19 21:11:40,881 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 144 transitions, 300 flow [2022-07-19 21:11:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,882 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:40,882 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:40,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:11:40,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash -331025959, now seen corresponding path program 1 times [2022-07-19 21:11:40,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:40,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301399844] [2022-07-19 21:11:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:40,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301399844] [2022-07-19 21:11:41,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301399844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:41,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:41,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38988402] [2022-07-19 21:11:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:41,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:41,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:41,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:41,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 152 [2022-07-19 21:11:41,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 144 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:41,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:41,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 152 [2022-07-19 21:11:41,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:42,932 INFO L129 PetriNetUnfolder]: 3393/8110 cut-off events. [2022-07-19 21:11:42,933 INFO L130 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-07-19 21:11:42,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13398 conditions, 8110 events. 3393/8110 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 70770 event pairs, 708 based on Foata normal form. 0/7880 useless extension candidates. Maximal degree in co-relation 13323. Up to 2642 conditions per place. [2022-07-19 21:11:42,992 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 27 selfloop transitions, 3 changer transitions 71/210 dead transitions. [2022-07-19 21:11:42,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 210 transitions, 624 flow [2022-07-19 21:11:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2022-07-19 21:11:42,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8947368421052632 [2022-07-19 21:11:42,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2022-07-19 21:11:42,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2022-07-19 21:11:42,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:42,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2022-07-19 21:11:43,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,006 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,006 INFO L186 Difference]: Start difference. First operand has 155 places, 144 transitions, 300 flow. Second operand 9 states and 1224 transitions. [2022-07-19 21:11:43,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 210 transitions, 624 flow [2022-07-19 21:11:43,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 210 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:11:43,010 INFO L242 Difference]: Finished difference. Result has 168 places, 132 transitions, 311 flow [2022-07-19 21:11:43,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=168, PETRI_TRANSITIONS=132} [2022-07-19 21:11:43,012 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 9 predicate places. [2022-07-19 21:11:43,012 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 132 transitions, 311 flow [2022-07-19 21:11:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,013 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:43,013 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:11:43,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:43,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1071559942, now seen corresponding path program 1 times [2022-07-19 21:11:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:43,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987792585] [2022-07-19 21:11:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:43,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:43,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987792585] [2022-07-19 21:11:43,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987792585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:43,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:43,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509697970] [2022-07-19 21:11:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:43,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:43,224 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2022-07-19 21:11:43,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 132 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:43,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2022-07-19 21:11:43,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:44,002 INFO L129 PetriNetUnfolder]: 1072/2211 cut-off events. [2022-07-19 21:11:44,003 INFO L130 PetriNetUnfolder]: For 1446/1458 co-relation queries the response was YES. [2022-07-19 21:11:44,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 2211 events. 1072/2211 cut-off events. For 1446/1458 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14037 event pairs, 314 based on Foata normal form. 48/2158 useless extension candidates. Maximal degree in co-relation 4802. Up to 831 conditions per place. [2022-07-19 21:11:44,026 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 22 selfloop transitions, 3 changer transitions 37/175 dead transitions. [2022-07-19 21:11:44,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 175 transitions, 541 flow [2022-07-19 21:11:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1344 transitions. [2022-07-19 21:11:44,030 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2022-07-19 21:11:44,031 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1344 transitions. [2022-07-19 21:11:44,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1344 transitions. [2022-07-19 21:11:44,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:44,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1344 transitions. [2022-07-19 21:11:44,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.4) internal successors, (1344), 10 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:44,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:44,039 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:44,039 INFO L186 Difference]: Start difference. First operand has 168 places, 132 transitions, 311 flow. Second operand 10 states and 1344 transitions. [2022-07-19 21:11:44,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 175 transitions, 541 flow [2022-07-19 21:11:44,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 175 transitions, 524 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:44,056 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 324 flow [2022-07-19 21:11:44,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-19 21:11:44,059 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 1 predicate places. [2022-07-19 21:11:44,060 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 324 flow [2022-07-19 21:11:44,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:44,061 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:44,061 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:44,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:11:44,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash -787768344, now seen corresponding path program 1 times [2022-07-19 21:11:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:44,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797137079] [2022-07-19 21:11:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:44,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:44,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797137079] [2022-07-19 21:11:44,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797137079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:44,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:44,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:44,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350759614] [2022-07-19 21:11:44,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:44,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:44,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 152 [2022-07-19 21:11:44,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:44,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:44,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 152 [2022-07-19 21:11:44,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:45,463 INFO L129 PetriNetUnfolder]: 2607/4750 cut-off events. [2022-07-19 21:11:45,463 INFO L130 PetriNetUnfolder]: For 4187/4223 co-relation queries the response was YES. [2022-07-19 21:11:45,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 4750 events. 2607/4750 cut-off events. For 4187/4223 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31408 event pairs, 963 based on Foata normal form. 90/4693 useless extension candidates. Maximal degree in co-relation 11223. Up to 1500 conditions per place. [2022-07-19 21:11:45,517 INFO L132 encePairwiseOnDemand]: 146/152 looper letters, 32 selfloop transitions, 3 changer transitions 46/190 dead transitions. [2022-07-19 21:11:45,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 190 transitions, 674 flow [2022-07-19 21:11:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1216 transitions. [2022-07-19 21:11:45,522 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-07-19 21:11:45,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1216 transitions. [2022-07-19 21:11:45,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1216 transitions. [2022-07-19 21:11:45,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:45,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1216 transitions. [2022-07-19 21:11:45,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.11111111111111) internal successors, (1216), 9 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:45,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:45,531 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:45,531 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 324 flow. Second operand 9 states and 1216 transitions. [2022-07-19 21:11:45,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 190 transitions, 674 flow [2022-07-19 21:11:45,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 190 transitions, 620 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-07-19 21:11:45,583 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 327 flow [2022-07-19 21:11:45,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=327, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-19 21:11:45,585 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 1 predicate places. [2022-07-19 21:11:45,585 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 327 flow [2022-07-19 21:11:45,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:45,586 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:45,586 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:45,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:11:45,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash -632451813, now seen corresponding path program 1 times [2022-07-19 21:11:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:45,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143774089] [2022-07-19 21:11:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:45,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:45,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143774089] [2022-07-19 21:11:45,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143774089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:45,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:45,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274526859] [2022-07-19 21:11:45,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:45,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:45,927 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2022-07-19 21:11:45,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:45,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:45,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2022-07-19 21:11:45,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:46,726 INFO L129 PetriNetUnfolder]: 1620/3360 cut-off events. [2022-07-19 21:11:46,727 INFO L130 PetriNetUnfolder]: For 3894/3903 co-relation queries the response was YES. [2022-07-19 21:11:46,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 3360 events. 1620/3360 cut-off events. For 3894/3903 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23670 event pairs, 936 based on Foata normal form. 90/3249 useless extension candidates. Maximal degree in co-relation 7724. Up to 1251 conditions per place. [2022-07-19 21:11:46,749 INFO L132 encePairwiseOnDemand]: 146/152 looper letters, 26 selfloop transitions, 2 changer transitions 37/178 dead transitions. [2022-07-19 21:11:46,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 178 transitions, 586 flow [2022-07-19 21:11:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1219 transitions. [2022-07-19 21:11:46,753 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8910818713450293 [2022-07-19 21:11:46,754 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1219 transitions. [2022-07-19 21:11:46,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1219 transitions. [2022-07-19 21:11:46,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:46,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1219 transitions. [2022-07-19 21:11:46,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.44444444444446) internal successors, (1219), 9 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:46,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:46,761 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:46,761 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 327 flow. Second operand 9 states and 1219 transitions. [2022-07-19 21:11:46,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 178 transitions, 586 flow [2022-07-19 21:11:46,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 178 transitions, 549 flow, removed 17 selfloop flow, removed 7 redundant places. [2022-07-19 21:11:46,787 INFO L242 Difference]: Finished difference. Result has 162 places, 132 transitions, 326 flow [2022-07-19 21:11:46,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-07-19 21:11:46,788 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-07-19 21:11:46,789 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 326 flow [2022-07-19 21:11:46,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:46,789 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:46,789 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:46,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:11:46,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash 638703164, now seen corresponding path program 1 times [2022-07-19 21:11:46,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:46,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015645927] [2022-07-19 21:11:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:46,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:46,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015645927] [2022-07-19 21:11:46,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015645927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:46,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:46,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326092579] [2022-07-19 21:11:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:46,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:46,931 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 152 [2022-07-19 21:11:46,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:46,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:46,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 152 [2022-07-19 21:11:46,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:47,862 INFO L129 PetriNetUnfolder]: 2220/4354 cut-off events. [2022-07-19 21:11:47,862 INFO L130 PetriNetUnfolder]: For 4131/4155 co-relation queries the response was YES. [2022-07-19 21:11:47,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 4354 events. 2220/4354 cut-off events. For 4131/4155 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30828 event pairs, 414 based on Foata normal form. 60/4219 useless extension candidates. Maximal degree in co-relation 10172. Up to 1563 conditions per place. [2022-07-19 21:11:47,897 INFO L132 encePairwiseOnDemand]: 143/152 looper letters, 32 selfloop transitions, 5 changer transitions 26/171 dead transitions. [2022-07-19 21:11:47,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 171 transitions, 601 flow [2022-07-19 21:11:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:11:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:11:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 939 transitions. [2022-07-19 21:11:47,901 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8825187969924813 [2022-07-19 21:11:47,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 939 transitions. [2022-07-19 21:11:47,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 939 transitions. [2022-07-19 21:11:47,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:47,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 939 transitions. [2022-07-19 21:11:47,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,906 INFO L186 Difference]: Start difference. First operand has 162 places, 132 transitions, 326 flow. Second operand 7 states and 939 transitions. [2022-07-19 21:11:47,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 171 transitions, 601 flow [2022-07-19 21:11:47,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 171 transitions, 575 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-07-19 21:11:47,923 INFO L242 Difference]: Finished difference. Result has 158 places, 132 transitions, 333 flow [2022-07-19 21:11:47,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=158, PETRI_TRANSITIONS=132} [2022-07-19 21:11:47,924 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, -1 predicate places. [2022-07-19 21:11:47,924 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 132 transitions, 333 flow [2022-07-19 21:11:47,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,925 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:47,925 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:47,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:11:47,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:47,926 INFO L85 PathProgramCache]: Analyzing trace with hash -72517056, now seen corresponding path program 2 times [2022-07-19 21:11:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:47,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718970807] [2022-07-19 21:11:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:47,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:48,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718970807] [2022-07-19 21:11:48,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718970807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:48,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:48,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951443596] [2022-07-19 21:11:48,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:48,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:48,133 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-19 21:11:48,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 132 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:48,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-19 21:11:48,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:50,052 INFO L129 PetriNetUnfolder]: 7660/13043 cut-off events. [2022-07-19 21:11:50,053 INFO L130 PetriNetUnfolder]: For 2562/2602 co-relation queries the response was YES. [2022-07-19 21:11:50,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26178 conditions, 13043 events. 7660/13043 cut-off events. For 2562/2602 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 98456 event pairs, 358 based on Foata normal form. 0/12678 useless extension candidates. Maximal degree in co-relation 26089. Up to 4663 conditions per place. [2022-07-19 21:11:50,144 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 38 selfloop transitions, 7 changer transitions 60/213 dead transitions. [2022-07-19 21:11:50,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 213 transitions, 716 flow [2022-07-19 21:11:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-07-19 21:11:50,149 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8861842105263158 [2022-07-19 21:11:50,149 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-07-19 21:11:50,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-07-19 21:11:50,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:50,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-07-19 21:11:50,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:50,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:50,157 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:50,158 INFO L186 Difference]: Start difference. First operand has 158 places, 132 transitions, 333 flow. Second operand 10 states and 1347 transitions. [2022-07-19 21:11:50,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 213 transitions, 716 flow [2022-07-19 21:11:50,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 213 transitions, 698 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-19 21:11:50,176 INFO L242 Difference]: Finished difference. Result has 164 places, 135 transitions, 381 flow [2022-07-19 21:11:50,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-07-19 21:11:50,177 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 5 predicate places. [2022-07-19 21:11:50,178 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 381 flow [2022-07-19 21:11:50,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:50,178 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:50,178 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:50,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:11:50,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash -301669039, now seen corresponding path program 1 times [2022-07-19 21:11:50,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:50,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487629006] [2022-07-19 21:11:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:50,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:50,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487629006] [2022-07-19 21:11:50,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487629006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:50,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:50,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 21:11:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319413959] [2022-07-19 21:11:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:50,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:11:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:11:50,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:11:50,847 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 152 [2022-07-19 21:11:50,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 381 flow. Second operand has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:50,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:50,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 152 [2022-07-19 21:11:50,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:52,491 INFO L129 PetriNetUnfolder]: 2333/5843 cut-off events. [2022-07-19 21:11:52,491 INFO L130 PetriNetUnfolder]: For 4782/5093 co-relation queries the response was YES. [2022-07-19 21:11:52,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14237 conditions, 5843 events. 2333/5843 cut-off events. For 4782/5093 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 52463 event pairs, 1319 based on Foata normal form. 39/5557 useless extension candidates. Maximal degree in co-relation 14129. Up to 1740 conditions per place. [2022-07-19 21:11:52,532 INFO L132 encePairwiseOnDemand]: 133/152 looper letters, 76 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2022-07-19 21:11:52,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 207 transitions, 809 flow [2022-07-19 21:11:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:11:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:11:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2620 transitions. [2022-07-19 21:11:52,540 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7494279176201373 [2022-07-19 21:11:52,543 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2620 transitions. [2022-07-19 21:11:52,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2620 transitions. [2022-07-19 21:11:52,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:52,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2620 transitions. [2022-07-19 21:11:52,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 113.91304347826087) internal successors, (2620), 23 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:52,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:52,560 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:52,560 INFO L186 Difference]: Start difference. First operand has 164 places, 135 transitions, 381 flow. Second operand 23 states and 2620 transitions. [2022-07-19 21:11:52,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 207 transitions, 809 flow [2022-07-19 21:11:52,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 207 transitions, 794 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-19 21:11:52,584 INFO L242 Difference]: Finished difference. Result has 188 places, 159 transitions, 602 flow [2022-07-19 21:11:52,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=602, PETRI_PLACES=188, PETRI_TRANSITIONS=159} [2022-07-19 21:11:52,588 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 29 predicate places. [2022-07-19 21:11:52,588 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 159 transitions, 602 flow [2022-07-19 21:11:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:52,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:52,590 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:11:52,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -850925097, now seen corresponding path program 2 times [2022-07-19 21:11:52,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:52,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470596441] [2022-07-19 21:11:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:52,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:52,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:52,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470596441] [2022-07-19 21:11:52,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470596441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:52,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:52,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 21:11:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925500177] [2022-07-19 21:11:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:52,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:11:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:11:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:11:52,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 152 [2022-07-19 21:11:52,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 159 transitions, 602 flow. Second operand has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:52,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:52,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 152 [2022-07-19 21:11:52,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:54,345 INFO L129 PetriNetUnfolder]: 2791/6836 cut-off events. [2022-07-19 21:11:54,345 INFO L130 PetriNetUnfolder]: For 16571/16951 co-relation queries the response was YES. [2022-07-19 21:11:54,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22105 conditions, 6836 events. 2791/6836 cut-off events. For 16571/16951 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 63249 event pairs, 1461 based on Foata normal form. 60/6499 useless extension candidates. Maximal degree in co-relation 21984. Up to 2009 conditions per place. [2022-07-19 21:11:54,507 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 105 selfloop transitions, 71 changer transitions 6/284 dead transitions. [2022-07-19 21:11:54,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 284 transitions, 1811 flow [2022-07-19 21:11:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:11:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:11:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2767 transitions. [2022-07-19 21:11:54,515 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7914759725400458 [2022-07-19 21:11:54,515 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2767 transitions. [2022-07-19 21:11:54,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2767 transitions. [2022-07-19 21:11:54,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:54,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2767 transitions. [2022-07-19 21:11:54,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 120.30434782608695) internal successors, (2767), 23 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:54,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:54,531 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:54,531 INFO L186 Difference]: Start difference. First operand has 188 places, 159 transitions, 602 flow. Second operand 23 states and 2767 transitions. [2022-07-19 21:11:54,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 284 transitions, 1811 flow [2022-07-19 21:11:54,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 284 transitions, 1764 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-07-19 21:11:54,583 INFO L242 Difference]: Finished difference. Result has 218 places, 233 transitions, 1412 flow [2022-07-19 21:11:54,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1412, PETRI_PLACES=218, PETRI_TRANSITIONS=233} [2022-07-19 21:11:54,584 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 59 predicate places. [2022-07-19 21:11:54,585 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 233 transitions, 1412 flow [2022-07-19 21:11:54,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:54,585 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:54,586 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:54,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:11:54,586 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash -543311883, now seen corresponding path program 3 times [2022-07-19 21:11:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:54,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595519779] [2022-07-19 21:11:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:54,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:55,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:55,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595519779] [2022-07-19 21:11:55,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595519779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:55,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:55,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 21:11:55,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113366129] [2022-07-19 21:11:55,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:55,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:11:55,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:55,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:11:55,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:11:55,314 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 152 [2022-07-19 21:11:55,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 233 transitions, 1412 flow. Second operand has 20 states, 20 states have (on average 97.95) internal successors, (1959), 20 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:55,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:55,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 152 [2022-07-19 21:11:55,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:58,225 INFO L129 PetriNetUnfolder]: 3172/7951 cut-off events. [2022-07-19 21:11:58,226 INFO L130 PetriNetUnfolder]: For 38525/39258 co-relation queries the response was YES. [2022-07-19 21:11:58,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30411 conditions, 7951 events. 3172/7951 cut-off events. For 38525/39258 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 76289 event pairs, 1690 based on Foata normal form. 53/7516 useless extension candidates. Maximal degree in co-relation 30269. Up to 3240 conditions per place. [2022-07-19 21:11:58,375 INFO L132 encePairwiseOnDemand]: 130/152 looper letters, 150 selfloop transitions, 76 changer transitions 44/362 dead transitions. [2022-07-19 21:11:58,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 362 transitions, 3015 flow [2022-07-19 21:11:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:11:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:11:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2930 transitions. [2022-07-19 21:11:58,384 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6647005444646098 [2022-07-19 21:11:58,384 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2930 transitions. [2022-07-19 21:11:58,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2930 transitions. [2022-07-19 21:11:58,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:58,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2930 transitions. [2022-07-19 21:11:58,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 101.03448275862068) internal successors, (2930), 29 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:58,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 152.0) internal successors, (4560), 30 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:58,417 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 152.0) internal successors, (4560), 30 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:58,417 INFO L186 Difference]: Start difference. First operand has 218 places, 233 transitions, 1412 flow. Second operand 29 states and 2930 transitions. [2022-07-19 21:11:58,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 362 transitions, 3015 flow [2022-07-19 21:11:58,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 362 transitions, 2772 flow, removed 118 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:58,650 INFO L242 Difference]: Finished difference. Result has 257 places, 297 transitions, 1978 flow [2022-07-19 21:11:58,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1978, PETRI_PLACES=257, PETRI_TRANSITIONS=297} [2022-07-19 21:11:58,651 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-07-19 21:11:58,652 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 297 transitions, 1978 flow [2022-07-19 21:11:58,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.95) internal successors, (1959), 20 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:58,653 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:58,653 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:58,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:11:58,653 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:11:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1590066825, now seen corresponding path program 1 times [2022-07-19 21:11:58,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:58,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282764229] [2022-07-19 21:11:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:58,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:58,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282764229] [2022-07-19 21:11:58,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282764229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:58,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:58,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:58,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658461538] [2022-07-19 21:11:58,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:58,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:58,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:58,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-19 21:11:58,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 297 transitions, 1978 flow. Second operand has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:58,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:58,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-19 21:11:58,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:00,779 INFO L129 PetriNetUnfolder]: 4905/9301 cut-off events. [2022-07-19 21:12:00,779 INFO L130 PetriNetUnfolder]: For 53819/54226 co-relation queries the response was YES. [2022-07-19 21:12:00,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40682 conditions, 9301 events. 4905/9301 cut-off events. For 53819/54226 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 72010 event pairs, 149 based on Foata normal form. 289/9474 useless extension candidates. Maximal degree in co-relation 40539. Up to 2420 conditions per place. [2022-07-19 21:12:00,925 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 198 selfloop transitions, 11 changer transitions 234/566 dead transitions. [2022-07-19 21:12:00,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 566 transitions, 5487 flow [2022-07-19 21:12:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:12:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:12:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1345 transitions. [2022-07-19 21:12:00,929 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8848684210526315 [2022-07-19 21:12:00,929 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1345 transitions. [2022-07-19 21:12:00,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1345 transitions. [2022-07-19 21:12:00,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:00,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1345 transitions. [2022-07-19 21:12:00,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.5) internal successors, (1345), 10 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:00,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:00,938 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:00,938 INFO L186 Difference]: Start difference. First operand has 257 places, 297 transitions, 1978 flow. Second operand 10 states and 1345 transitions. [2022-07-19 21:12:00,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 566 transitions, 5487 flow [2022-07-19 21:12:01,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 566 transitions, 4794 flow, removed 293 selfloop flow, removed 17 redundant places. [2022-07-19 21:12:01,123 INFO L242 Difference]: Finished difference. Result has 249 places, 233 transitions, 1360 flow [2022-07-19 21:12:01,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1360, PETRI_PLACES=249, PETRI_TRANSITIONS=233} [2022-07-19 21:12:01,125 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-19 21:12:01,125 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 233 transitions, 1360 flow [2022-07-19 21:12:01,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:01,126 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:01,126 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:01,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:12:01,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:01,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:01,127 INFO L85 PathProgramCache]: Analyzing trace with hash 45302874, now seen corresponding path program 1 times [2022-07-19 21:12:01,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:01,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006489331] [2022-07-19 21:12:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:01,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:02,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:02,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006489331] [2022-07-19 21:12:02,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006489331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:02,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:02,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 21:12:02,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973830764] [2022-07-19 21:12:02,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:02,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:12:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:02,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:12:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:12:02,006 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 152 [2022-07-19 21:12:02,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 233 transitions, 1360 flow. Second operand has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:02,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:02,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 152 [2022-07-19 21:12:02,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:03,844 INFO L129 PetriNetUnfolder]: 1190/3664 cut-off events. [2022-07-19 21:12:03,845 INFO L130 PetriNetUnfolder]: For 21457/22116 co-relation queries the response was YES. [2022-07-19 21:12:03,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 3664 events. 1190/3664 cut-off events. For 21457/22116 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 31425 event pairs, 510 based on Foata normal form. 105/3647 useless extension candidates. Maximal degree in co-relation 15420. Up to 1241 conditions per place. [2022-07-19 21:12:03,882 INFO L132 encePairwiseOnDemand]: 129/152 looper letters, 93 selfloop transitions, 80 changer transitions 28/295 dead transitions. [2022-07-19 21:12:03,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 295 transitions, 2340 flow [2022-07-19 21:12:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 21:12:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-19 21:12:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3047 transitions. [2022-07-19 21:12:03,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6466468590831919 [2022-07-19 21:12:03,887 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3047 transitions. [2022-07-19 21:12:03,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3047 transitions. [2022-07-19 21:12:03,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:03,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3047 transitions. [2022-07-19 21:12:03,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 98.29032258064517) internal successors, (3047), 31 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:03,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:03,901 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:03,901 INFO L186 Difference]: Start difference. First operand has 249 places, 233 transitions, 1360 flow. Second operand 31 states and 3047 transitions. [2022-07-19 21:12:03,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 295 transitions, 2340 flow [2022-07-19 21:12:03,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 295 transitions, 2139 flow, removed 91 selfloop flow, removed 27 redundant places. [2022-07-19 21:12:03,987 INFO L242 Difference]: Finished difference. Result has 235 places, 252 transitions, 1625 flow [2022-07-19 21:12:03,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1625, PETRI_PLACES=235, PETRI_TRANSITIONS=252} [2022-07-19 21:12:03,988 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2022-07-19 21:12:03,988 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 252 transitions, 1625 flow [2022-07-19 21:12:03,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:03,989 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:03,989 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:03,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:12:03,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:03,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1999348842, now seen corresponding path program 2 times [2022-07-19 21:12:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:03,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630370022] [2022-07-19 21:12:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:03,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:05,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:05,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630370022] [2022-07-19 21:12:05,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630370022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:05,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:05,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-19 21:12:05,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804941301] [2022-07-19 21:12:05,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:05,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 21:12:05,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:05,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 21:12:05,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-07-19 21:12:05,108 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-19 21:12:05,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 252 transitions, 1625 flow. Second operand has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:05,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:05,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-19 21:12:05,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:07,429 INFO L129 PetriNetUnfolder]: 1621/4947 cut-off events. [2022-07-19 21:12:07,429 INFO L130 PetriNetUnfolder]: For 22858/23294 co-relation queries the response was YES. [2022-07-19 21:12:07,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18783 conditions, 4947 events. 1621/4947 cut-off events. For 22858/23294 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 45839 event pairs, 573 based on Foata normal form. 130/4920 useless extension candidates. Maximal degree in co-relation 18632. Up to 1346 conditions per place. [2022-07-19 21:12:07,492 INFO L132 encePairwiseOnDemand]: 127/152 looper letters, 142 selfloop transitions, 129 changer transitions 0/363 dead transitions. [2022-07-19 21:12:07,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 363 transitions, 3322 flow [2022-07-19 21:12:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:12:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:12:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3190 transitions. [2022-07-19 21:12:07,499 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2022-07-19 21:12:07,499 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3190 transitions. [2022-07-19 21:12:07,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3190 transitions. [2022-07-19 21:12:07,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:07,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3190 transitions. [2022-07-19 21:12:07,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 96.66666666666667) internal successors, (3190), 33 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:07,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:07,513 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:07,513 INFO L186 Difference]: Start difference. First operand has 235 places, 252 transitions, 1625 flow. Second operand 33 states and 3190 transitions. [2022-07-19 21:12:07,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 363 transitions, 3322 flow [2022-07-19 21:12:07,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 363 transitions, 3134 flow, removed 61 selfloop flow, removed 24 redundant places. [2022-07-19 21:12:07,575 INFO L242 Difference]: Finished difference. Result has 251 places, 313 transitions, 2634 flow [2022-07-19 21:12:07,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2634, PETRI_PLACES=251, PETRI_TRANSITIONS=313} [2022-07-19 21:12:07,577 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2022-07-19 21:12:07,577 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 313 transitions, 2634 flow [2022-07-19 21:12:07,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:07,578 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:07,578 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:07,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:12:07,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash -614257416, now seen corresponding path program 3 times [2022-07-19 21:12:07,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:07,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806671839] [2022-07-19 21:12:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:07,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:08,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:08,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806671839] [2022-07-19 21:12:08,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806671839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:08,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:08,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 21:12:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337728998] [2022-07-19 21:12:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:12:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:12:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:12:08,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 152 [2022-07-19 21:12:08,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 313 transitions, 2634 flow. Second operand has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:08,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:08,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 152 [2022-07-19 21:12:08,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:09,750 INFO L129 PetriNetUnfolder]: 1861/5581 cut-off events. [2022-07-19 21:12:09,750 INFO L130 PetriNetUnfolder]: For 36912/37455 co-relation queries the response was YES. [2022-07-19 21:12:09,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23744 conditions, 5581 events. 1861/5581 cut-off events. For 36912/37455 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 53268 event pairs, 549 based on Foata normal form. 184/5594 useless extension candidates. Maximal degree in co-relation 23592. Up to 1538 conditions per place. [2022-07-19 21:12:09,803 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 190 selfloop transitions, 105 changer transitions 9/415 dead transitions. [2022-07-19 21:12:09,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 415 transitions, 4426 flow [2022-07-19 21:12:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:12:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:12:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2577 transitions. [2022-07-19 21:12:09,807 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7706339712918661 [2022-07-19 21:12:09,807 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2577 transitions. [2022-07-19 21:12:09,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2577 transitions. [2022-07-19 21:12:09,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:09,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2577 transitions. [2022-07-19 21:12:09,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 117.13636363636364) internal successors, (2577), 22 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:09,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:09,817 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:09,817 INFO L186 Difference]: Start difference. First operand has 251 places, 313 transitions, 2634 flow. Second operand 22 states and 2577 transitions. [2022-07-19 21:12:09,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 415 transitions, 4426 flow [2022-07-19 21:12:09,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 415 transitions, 4223 flow, removed 84 selfloop flow, removed 15 redundant places. [2022-07-19 21:12:09,918 INFO L242 Difference]: Finished difference. Result has 270 places, 342 transitions, 3290 flow [2022-07-19 21:12:09,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3290, PETRI_PLACES=270, PETRI_TRANSITIONS=342} [2022-07-19 21:12:09,919 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-19 21:12:09,919 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 342 transitions, 3290 flow [2022-07-19 21:12:09,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:09,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:09,920 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:09,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:12:09,920 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1146494990, now seen corresponding path program 1 times [2022-07-19 21:12:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:09,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461898000] [2022-07-19 21:12:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:10,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:10,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461898000] [2022-07-19 21:12:10,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461898000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:10,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:10,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15018697] [2022-07-19 21:12:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:10,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:10,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:10,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 152 [2022-07-19 21:12:10,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 342 transitions, 3290 flow. Second operand has 7 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:10,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:10,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 152 [2022-07-19 21:12:10,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:12,120 INFO L129 PetriNetUnfolder]: 3668/10309 cut-off events. [2022-07-19 21:12:12,120 INFO L130 PetriNetUnfolder]: For 85032/85658 co-relation queries the response was YES. [2022-07-19 21:12:12,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47086 conditions, 10309 events. 3668/10309 cut-off events. For 85032/85658 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 107793 event pairs, 650 based on Foata normal form. 239/10245 useless extension candidates. Maximal degree in co-relation 46939. Up to 2031 conditions per place. [2022-07-19 21:12:12,315 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 538 selfloop transitions, 25 changer transitions 58/761 dead transitions. [2022-07-19 21:12:12,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 761 transitions, 10143 flow [2022-07-19 21:12:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:12:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:12:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1069 transitions. [2022-07-19 21:12:12,318 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791118421052632 [2022-07-19 21:12:12,318 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1069 transitions. [2022-07-19 21:12:12,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1069 transitions. [2022-07-19 21:12:12,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:12,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1069 transitions. [2022-07-19 21:12:12,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.625) internal successors, (1069), 8 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:12,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:12,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:12,322 INFO L186 Difference]: Start difference. First operand has 270 places, 342 transitions, 3290 flow. Second operand 8 states and 1069 transitions. [2022-07-19 21:12:12,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 761 transitions, 10143 flow [2022-07-19 21:12:12,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 761 transitions, 9748 flow, removed 192 selfloop flow, removed 6 redundant places. [2022-07-19 21:12:12,679 INFO L242 Difference]: Finished difference. Result has 276 places, 363 transitions, 3560 flow [2022-07-19 21:12:12,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3560, PETRI_PLACES=276, PETRI_TRANSITIONS=363} [2022-07-19 21:12:12,680 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 117 predicate places. [2022-07-19 21:12:12,680 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 363 transitions, 3560 flow [2022-07-19 21:12:12,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:12,681 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:12,681 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:12,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:12:12,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash -292902830, now seen corresponding path program 1 times [2022-07-19 21:12:12,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:12,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618763537] [2022-07-19 21:12:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:12,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:12,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618763537] [2022-07-19 21:12:12,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618763537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:12,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:12,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:12:12,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948059051] [2022-07-19 21:12:12,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:12:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:12:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:12:12,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-19 21:12:12,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 363 transitions, 3560 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:12,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:12,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-19 21:12:12,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:15,174 INFO L129 PetriNetUnfolder]: 5414/11252 cut-off events. [2022-07-19 21:12:15,175 INFO L130 PetriNetUnfolder]: For 106334/107456 co-relation queries the response was YES. [2022-07-19 21:12:15,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57524 conditions, 11252 events. 5414/11252 cut-off events. For 106334/107456 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 100604 event pairs, 174 based on Foata normal form. 428/11557 useless extension candidates. Maximal degree in co-relation 57378. Up to 3099 conditions per place. [2022-07-19 21:12:15,369 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 294 selfloop transitions, 15 changer transitions 276/712 dead transitions. [2022-07-19 21:12:15,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 712 transitions, 9337 flow [2022-07-19 21:12:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:12:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:12:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1480 transitions. [2022-07-19 21:12:15,371 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8851674641148325 [2022-07-19 21:12:15,371 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1480 transitions. [2022-07-19 21:12:15,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1480 transitions. [2022-07-19 21:12:15,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:15,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1480 transitions. [2022-07-19 21:12:15,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.54545454545453) internal successors, (1480), 11 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) [2022-07-19 21:12:15,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:15,375 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:15,375 INFO L186 Difference]: Start difference. First operand has 276 places, 363 transitions, 3560 flow. Second operand 11 states and 1480 transitions. [2022-07-19 21:12:15,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 712 transitions, 9337 flow [2022-07-19 21:12:15,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 712 transitions, 9005 flow, removed 122 selfloop flow, removed 4 redundant places. [2022-07-19 21:12:15,622 INFO L242 Difference]: Finished difference. Result has 287 places, 284 transitions, 2453 flow [2022-07-19 21:12:15,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2453, PETRI_PLACES=287, PETRI_TRANSITIONS=284} [2022-07-19 21:12:15,622 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 128 predicate places. [2022-07-19 21:12:15,622 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 284 transitions, 2453 flow [2022-07-19 21:12:15,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:15,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:15,623 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:15,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:12:15,624 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1609935641, now seen corresponding path program 1 times [2022-07-19 21:12:15,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:15,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677163929] [2022-07-19 21:12:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:17,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:17,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677163929] [2022-07-19 21:12:17,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677163929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:17,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:17,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-07-19 21:12:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688561008] [2022-07-19 21:12:17,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:17,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-19 21:12:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-19 21:12:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 21:12:17,806 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 152 [2022-07-19 21:12:17,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 284 transitions, 2453 flow. Second operand has 36 states, 36 states have (on average 87.44444444444444) internal successors, (3148), 36 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:17,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:17,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 152 [2022-07-19 21:12:17,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:23,093 INFO L129 PetriNetUnfolder]: 2782/8417 cut-off events. [2022-07-19 21:12:23,093 INFO L130 PetriNetUnfolder]: For 55052/57707 co-relation queries the response was YES. [2022-07-19 21:12:23,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35270 conditions, 8417 events. 2782/8417 cut-off events. For 55052/57707 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 93211 event pairs, 568 based on Foata normal form. 522/8645 useless extension candidates. Maximal degree in co-relation 35098. Up to 2138 conditions per place. [2022-07-19 21:12:23,231 INFO L132 encePairwiseOnDemand]: 115/152 looper letters, 192 selfloop transitions, 153 changer transitions 85/521 dead transitions. [2022-07-19 21:12:23,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 521 transitions, 6013 flow [2022-07-19 21:12:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-19 21:12:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-19 21:12:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5390 transitions. [2022-07-19 21:12:23,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5910087719298246 [2022-07-19 21:12:23,238 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5390 transitions. [2022-07-19 21:12:23,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5390 transitions. [2022-07-19 21:12:23,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:23,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5390 transitions. [2022-07-19 21:12:23,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 89.83333333333333) internal successors, (5390), 60 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 152.0) internal successors, (9272), 61 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,264 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 152.0) internal successors, (9272), 61 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,265 INFO L186 Difference]: Start difference. First operand has 287 places, 284 transitions, 2453 flow. Second operand 60 states and 5390 transitions. [2022-07-19 21:12:23,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 521 transitions, 6013 flow [2022-07-19 21:12:23,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 521 transitions, 5786 flow, removed 84 selfloop flow, removed 32 redundant places. [2022-07-19 21:12:23,907 INFO L242 Difference]: Finished difference. Result has 312 places, 366 transitions, 3768 flow [2022-07-19 21:12:23,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3768, PETRI_PLACES=312, PETRI_TRANSITIONS=366} [2022-07-19 21:12:23,908 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 153 predicate places. [2022-07-19 21:12:23,908 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 366 transitions, 3768 flow [2022-07-19 21:12:23,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.44444444444444) internal successors, (3148), 36 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,909 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:23,909 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:23,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:12:23,909 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:23,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash -337797617, now seen corresponding path program 2 times [2022-07-19 21:12:23,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:23,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196633976] [2022-07-19 21:12:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196633976] [2022-07-19 21:12:25,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196633976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:25,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:25,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:12:25,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61462885] [2022-07-19 21:12:25,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:25,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:12:25,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:25,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:12:25,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:12:25,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-19 21:12:25,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 366 transitions, 3768 flow. Second operand has 27 states, 27 states have (on average 93.66666666666667) internal successors, (2529), 27 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:25,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:25,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-19 21:12:25,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:27,564 INFO L129 PetriNetUnfolder]: 2732/8854 cut-off events. [2022-07-19 21:12:27,565 INFO L130 PetriNetUnfolder]: For 49987/52579 co-relation queries the response was YES. [2022-07-19 21:12:27,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34304 conditions, 8854 events. 2732/8854 cut-off events. For 49987/52579 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 103224 event pairs, 410 based on Foata normal form. 691/9155 useless extension candidates. Maximal degree in co-relation 34122. Up to 1838 conditions per place. [2022-07-19 21:12:27,756 INFO L132 encePairwiseOnDemand]: 126/152 looper letters, 140 selfloop transitions, 173 changer transitions 20/446 dead transitions. [2022-07-19 21:12:27,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 446 transitions, 5628 flow [2022-07-19 21:12:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 21:12:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-19 21:12:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3241 transitions. [2022-07-19 21:12:27,759 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6271284829721362 [2022-07-19 21:12:27,760 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3241 transitions. [2022-07-19 21:12:27,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3241 transitions. [2022-07-19 21:12:27,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:27,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3241 transitions. [2022-07-19 21:12:27,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 95.32352941176471) internal successors, (3241), 34 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,769 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,769 INFO L186 Difference]: Start difference. First operand has 312 places, 366 transitions, 3768 flow. Second operand 34 states and 3241 transitions. [2022-07-19 21:12:27,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 446 transitions, 5628 flow [2022-07-19 21:12:28,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 446 transitions, 5183 flow, removed 199 selfloop flow, removed 32 redundant places. [2022-07-19 21:12:28,109 INFO L242 Difference]: Finished difference. Result has 303 places, 407 transitions, 4693 flow [2022-07-19 21:12:28,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4693, PETRI_PLACES=303, PETRI_TRANSITIONS=407} [2022-07-19 21:12:28,110 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 144 predicate places. [2022-07-19 21:12:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 407 transitions, 4693 flow [2022-07-19 21:12:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.66666666666667) internal successors, (2529), 27 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,111 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:28,111 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:28,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:12:28,112 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1701761041, now seen corresponding path program 1 times [2022-07-19 21:12:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:28,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107563228] [2022-07-19 21:12:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:28,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:28,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:28,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107563228] [2022-07-19 21:12:28,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107563228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:28,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:28,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:12:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403093987] [2022-07-19 21:12:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:28,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:12:28,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:28,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:12:28,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:12:28,543 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 152 [2022-07-19 21:12:28,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 407 transitions, 4693 flow. Second operand has 14 states, 14 states have (on average 113.5) internal successors, (1589), 14 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:28,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 152 [2022-07-19 21:12:28,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:31,002 INFO L129 PetriNetUnfolder]: 3274/10896 cut-off events. [2022-07-19 21:12:31,002 INFO L130 PetriNetUnfolder]: For 64490/67895 co-relation queries the response was YES. [2022-07-19 21:12:31,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42045 conditions, 10896 events. 3274/10896 cut-off events. For 64490/67895 co-relation queries the response was YES. Maximal size of possible extension queue 1095. Compared 132113 event pairs, 582 based on Foata normal form. 842/11232 useless extension candidates. Maximal degree in co-relation 41871. Up to 2055 conditions per place. [2022-07-19 21:12:31,232 INFO L132 encePairwiseOnDemand]: 139/152 looper letters, 188 selfloop transitions, 139 changer transitions 10/467 dead transitions. [2022-07-19 21:12:31,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 467 transitions, 6162 flow [2022-07-19 21:12:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:12:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:12:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1753 transitions. [2022-07-19 21:12:31,235 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768859649122807 [2022-07-19 21:12:31,235 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1753 transitions. [2022-07-19 21:12:31,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1753 transitions. [2022-07-19 21:12:31,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:31,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1753 transitions. [2022-07-19 21:12:31,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.86666666666666) internal successors, (1753), 15 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:31,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:31,241 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:31,241 INFO L186 Difference]: Start difference. First operand has 303 places, 407 transitions, 4693 flow. Second operand 15 states and 1753 transitions. [2022-07-19 21:12:31,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 467 transitions, 6162 flow [2022-07-19 21:12:31,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 467 transitions, 5942 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-07-19 21:12:31,662 INFO L242 Difference]: Finished difference. Result has 289 places, 422 transitions, 5293 flow [2022-07-19 21:12:31,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4539, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5293, PETRI_PLACES=289, PETRI_TRANSITIONS=422} [2022-07-19 21:12:31,662 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 130 predicate places. [2022-07-19 21:12:31,662 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 422 transitions, 5293 flow [2022-07-19 21:12:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 113.5) internal successors, (1589), 14 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:31,663 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:31,663 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:31,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:12:31,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 299073469, now seen corresponding path program 2 times [2022-07-19 21:12:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90309806] [2022-07-19 21:12:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:31,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:31,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:31,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90309806] [2022-07-19 21:12:31,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90309806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:31,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:31,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:12:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858017791] [2022-07-19 21:12:31,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:31,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:12:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:12:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:12:31,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 152 [2022-07-19 21:12:31,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 422 transitions, 5293 flow. Second operand has 11 states, 11 states have (on average 117.81818181818181) internal successors, (1296), 11 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:31,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:31,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 152 [2022-07-19 21:12:31,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:34,244 INFO L129 PetriNetUnfolder]: 4042/13730 cut-off events. [2022-07-19 21:12:34,244 INFO L130 PetriNetUnfolder]: For 84466/88906 co-relation queries the response was YES. [2022-07-19 21:12:34,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52132 conditions, 13730 events. 4042/13730 cut-off events. For 84466/88906 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 174119 event pairs, 663 based on Foata normal form. 1019/14105 useless extension candidates. Maximal degree in co-relation 51972. Up to 2453 conditions per place. [2022-07-19 21:12:34,565 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 185 selfloop transitions, 145 changer transitions 18/482 dead transitions. [2022-07-19 21:12:34,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 482 transitions, 6861 flow [2022-07-19 21:12:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:12:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:12:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1344 transitions. [2022-07-19 21:12:34,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8038277511961722 [2022-07-19 21:12:34,567 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1344 transitions. [2022-07-19 21:12:34,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1344 transitions. [2022-07-19 21:12:34,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:34,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1344 transitions. [2022-07-19 21:12:34,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.18181818181819) internal successors, (1344), 11 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,570 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,570 INFO L186 Difference]: Start difference. First operand has 289 places, 422 transitions, 5293 flow. Second operand 11 states and 1344 transitions. [2022-07-19 21:12:34,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 482 transitions, 6861 flow [2022-07-19 21:12:35,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 482 transitions, 6694 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-07-19 21:12:35,039 INFO L242 Difference]: Finished difference. Result has 292 places, 442 transitions, 6053 flow [2022-07-19 21:12:35,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5150, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6053, PETRI_PLACES=292, PETRI_TRANSITIONS=442} [2022-07-19 21:12:35,040 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-19 21:12:35,040 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 442 transitions, 6053 flow [2022-07-19 21:12:35,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 117.81818181818181) internal successors, (1296), 11 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:35,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:35,041 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:35,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:12:35,041 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash 621395663, now seen corresponding path program 3 times [2022-07-19 21:12:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:35,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662190939] [2022-07-19 21:12:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:35,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:35,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662190939] [2022-07-19 21:12:35,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662190939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:35,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:35,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 21:12:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835583303] [2022-07-19 21:12:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:35,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:12:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:12:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:12:35,410 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 152 [2022-07-19 21:12:35,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 442 transitions, 6053 flow. Second operand has 13 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:35,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:35,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 152 [2022-07-19 21:12:35,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:38,401 INFO L129 PetriNetUnfolder]: 4663/16311 cut-off events. [2022-07-19 21:12:38,401 INFO L130 PetriNetUnfolder]: For 114086/119565 co-relation queries the response was YES. [2022-07-19 21:12:38,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63230 conditions, 16311 events. 4663/16311 cut-off events. For 114086/119565 co-relation queries the response was YES. Maximal size of possible extension queue 1605. Compared 214537 event pairs, 643 based on Foata normal form. 1187/16757 useless extension candidates. Maximal degree in co-relation 63065. Up to 3046 conditions per place. [2022-07-19 21:12:38,741 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 220 selfloop transitions, 149 changer transitions 15/515 dead transitions. [2022-07-19 21:12:38,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 515 transitions, 7948 flow [2022-07-19 21:12:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:12:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:12:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1653 transitions. [2022-07-19 21:12:38,743 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-07-19 21:12:38,744 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1653 transitions. [2022-07-19 21:12:38,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1653 transitions. [2022-07-19 21:12:38,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:38,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1653 transitions. [2022-07-19 21:12:38,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 118.07142857142857) internal successors, (1653), 14 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,749 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,749 INFO L186 Difference]: Start difference. First operand has 292 places, 442 transitions, 6053 flow. Second operand 14 states and 1653 transitions. [2022-07-19 21:12:38,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 515 transitions, 7948 flow [2022-07-19 21:12:39,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 515 transitions, 7817 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-07-19 21:12:39,478 INFO L242 Difference]: Finished difference. Result has 305 places, 467 transitions, 7029 flow [2022-07-19 21:12:39,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5962, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7029, PETRI_PLACES=305, PETRI_TRANSITIONS=467} [2022-07-19 21:12:39,480 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 146 predicate places. [2022-07-19 21:12:39,480 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 467 transitions, 7029 flow [2022-07-19 21:12:39,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:39,481 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:39,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:12:39,481 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:39,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1858266649, now seen corresponding path program 4 times [2022-07-19 21:12:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:39,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926752644] [2022-07-19 21:12:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:39,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:39,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926752644] [2022-07-19 21:12:39,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926752644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:39,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:39,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:12:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606899570] [2022-07-19 21:12:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:39,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:12:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:12:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:12:39,662 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-19 21:12:39,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 467 transitions, 7029 flow. Second operand has 9 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:39,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-19 21:12:39,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:46,994 INFO L129 PetriNetUnfolder]: 13318/31315 cut-off events. [2022-07-19 21:12:47,005 INFO L130 PetriNetUnfolder]: For 507946/513514 co-relation queries the response was YES. [2022-07-19 21:12:47,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178572 conditions, 31315 events. 13318/31315 cut-off events. For 507946/513514 co-relation queries the response was YES. Maximal size of possible extension queue 2681. Compared 379277 event pairs, 732 based on Foata normal form. 728/31074 useless extension candidates. Maximal degree in co-relation 178470. Up to 7625 conditions per place. [2022-07-19 21:12:47,634 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 607 selfloop transitions, 19 changer transitions 175/954 dead transitions. [2022-07-19 21:12:47,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 954 transitions, 19066 flow [2022-07-19 21:12:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:12:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:12:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1574 transitions. [2022-07-19 21:12:47,636 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8629385964912281 [2022-07-19 21:12:47,636 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1574 transitions. [2022-07-19 21:12:47,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1574 transitions. [2022-07-19 21:12:47,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:47,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1574 transitions. [2022-07-19 21:12:47,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 131.16666666666666) internal successors, (1574), 12 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:47,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 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) [2022-07-19 21:12:47,640 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 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) [2022-07-19 21:12:47,640 INFO L186 Difference]: Start difference. First operand has 305 places, 467 transitions, 7029 flow. Second operand 12 states and 1574 transitions. [2022-07-19 21:12:47,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 954 transitions, 19066 flow [2022-07-19 21:12:50,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 954 transitions, 17571 flow, removed 266 selfloop flow, removed 23 redundant places. [2022-07-19 21:12:50,763 INFO L242 Difference]: Finished difference. Result has 292 places, 438 transitions, 5981 flow [2022-07-19 21:12:50,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5981, PETRI_PLACES=292, PETRI_TRANSITIONS=438} [2022-07-19 21:12:50,765 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-19 21:12:50,765 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 438 transitions, 5981 flow [2022-07-19 21:12:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:50,765 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:50,766 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:50,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:12:50,766 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:50,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:50,766 INFO L85 PathProgramCache]: Analyzing trace with hash 643668994, now seen corresponding path program 1 times [2022-07-19 21:12:50,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:50,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714313523] [2022-07-19 21:12:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:50,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:51,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:51,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714313523] [2022-07-19 21:12:51,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714313523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:51,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:51,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:12:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273640326] [2022-07-19 21:12:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:12:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:12:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:12:51,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 152 [2022-07-19 21:12:51,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 438 transitions, 5981 flow. Second operand has 18 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:51,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:51,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 152 [2022-07-19 21:12:51,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:55,001 INFO L129 PetriNetUnfolder]: 5268/18266 cut-off events. [2022-07-19 21:12:55,002 INFO L130 PetriNetUnfolder]: For 104367/110509 co-relation queries the response was YES. [2022-07-19 21:12:55,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72013 conditions, 18266 events. 5268/18266 cut-off events. For 104367/110509 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 255351 event pairs, 466 based on Foata normal form. 544/17830 useless extension candidates. Maximal degree in co-relation 71853. Up to 3485 conditions per place. [2022-07-19 21:12:55,383 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 260 selfloop transitions, 160 changer transitions 18/558 dead transitions. [2022-07-19 21:12:55,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 558 transitions, 8882 flow [2022-07-19 21:12:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:12:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:12:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1587 transitions. [2022-07-19 21:12:55,387 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6960526315789474 [2022-07-19 21:12:55,387 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1587 transitions. [2022-07-19 21:12:55,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1587 transitions. [2022-07-19 21:12:55,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:55,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1587 transitions. [2022-07-19 21:12:55,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.8) internal successors, (1587), 15 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:55,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:55,392 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:55,392 INFO L186 Difference]: Start difference. First operand has 292 places, 438 transitions, 5981 flow. Second operand 15 states and 1587 transitions. [2022-07-19 21:12:55,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 558 transitions, 8882 flow [2022-07-19 21:12:57,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 558 transitions, 8002 flow, removed 395 selfloop flow, removed 22 redundant places. [2022-07-19 21:12:57,105 INFO L242 Difference]: Finished difference. Result has 286 places, 511 transitions, 7310 flow [2022-07-19 21:12:57,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5393, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7310, PETRI_PLACES=286, PETRI_TRANSITIONS=511} [2022-07-19 21:12:57,106 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-07-19 21:12:57,106 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 511 transitions, 7310 flow [2022-07-19 21:12:57,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:57,106 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:57,106 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:57,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:12:57,107 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash 580088298, now seen corresponding path program 2 times [2022-07-19 21:12:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:57,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724113035] [2022-07-19 21:12:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:58,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:58,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724113035] [2022-07-19 21:12:58,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724113035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:58,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:58,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-19 21:12:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952704273] [2022-07-19 21:12:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 21:12:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 21:12:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-07-19 21:12:58,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 152 [2022-07-19 21:12:58,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 511 transitions, 7310 flow. Second operand has 24 states, 24 states have (on average 91.08333333333333) internal successors, (2186), 24 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:58,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:58,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 152 [2022-07-19 21:12:58,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:03,552 INFO L129 PetriNetUnfolder]: 6747/24094 cut-off events. [2022-07-19 21:13:03,553 INFO L130 PetriNetUnfolder]: For 92667/99530 co-relation queries the response was YES. [2022-07-19 21:13:03,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67182 conditions, 24094 events. 6747/24094 cut-off events. For 92667/99530 co-relation queries the response was YES. Maximal size of possible extension queue 3082. Compared 354689 event pairs, 559 based on Foata normal form. 795/23524 useless extension candidates. Maximal degree in co-relation 67090. Up to 3928 conditions per place. [2022-07-19 21:13:03,791 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 268 selfloop transitions, 178 changer transitions 63/619 dead transitions. [2022-07-19 21:13:03,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 619 transitions, 9593 flow [2022-07-19 21:13:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:13:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:13:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2455 transitions. [2022-07-19 21:13:03,794 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6212044534412956 [2022-07-19 21:13:03,794 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2455 transitions. [2022-07-19 21:13:03,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2455 transitions. [2022-07-19 21:13:03,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:03,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2455 transitions. [2022-07-19 21:13:03,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.42307692307692) internal successors, (2455), 26 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:03,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:03,801 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:03,801 INFO L186 Difference]: Start difference. First operand has 286 places, 511 transitions, 7310 flow. Second operand 26 states and 2455 transitions. [2022-07-19 21:13:03,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 619 transitions, 9593 flow [2022-07-19 21:13:04,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 619 transitions, 9424 flow, removed 81 selfloop flow, removed 7 redundant places. [2022-07-19 21:13:04,329 INFO L242 Difference]: Finished difference. Result has 316 places, 518 transitions, 8012 flow [2022-07-19 21:13:04,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7209, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8012, PETRI_PLACES=316, PETRI_TRANSITIONS=518} [2022-07-19 21:13:04,330 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 157 predicate places. [2022-07-19 21:13:04,330 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 518 transitions, 8012 flow [2022-07-19 21:13:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.08333333333333) internal successors, (2186), 24 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:04,330 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:04,330 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:13:04,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:13:04,331 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:13:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash 157517170, now seen corresponding path program 3 times [2022-07-19 21:13:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:04,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350439907] [2022-07-19 21:13:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:05,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350439907] [2022-07-19 21:13:05,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350439907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:05,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:05,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:13:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927413446] [2022-07-19 21:13:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:13:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:13:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:13:05,655 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 152 [2022-07-19 21:13:05,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 518 transitions, 8012 flow. Second operand has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:05,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:05,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 152 [2022-07-19 21:13:05,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:10,791 INFO L129 PetriNetUnfolder]: 7196/25997 cut-off events. [2022-07-19 21:13:10,791 INFO L130 PetriNetUnfolder]: For 116771/125893 co-relation queries the response was YES. [2022-07-19 21:13:11,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72435 conditions, 25997 events. 7196/25997 cut-off events. For 116771/125893 co-relation queries the response was YES. Maximal size of possible extension queue 3382. Compared 389100 event pairs, 588 based on Foata normal form. 1125/25652 useless extension candidates. Maximal degree in co-relation 72331. Up to 4260 conditions per place. [2022-07-19 21:13:11,220 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 251 selfloop transitions, 160 changer transitions 90/615 dead transitions. [2022-07-19 21:13:11,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 615 transitions, 10179 flow [2022-07-19 21:13:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 21:13:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-19 21:13:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2502 transitions. [2022-07-19 21:13:11,223 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6584210526315789 [2022-07-19 21:13:11,223 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2502 transitions. [2022-07-19 21:13:11,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2502 transitions. [2022-07-19 21:13:11,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:11,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2502 transitions. [2022-07-19 21:13:11,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 100.08) internal successors, (2502), 25 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:11,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:11,231 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:11,231 INFO L186 Difference]: Start difference. First operand has 316 places, 518 transitions, 8012 flow. Second operand 25 states and 2502 transitions. [2022-07-19 21:13:11,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 615 transitions, 10179 flow [2022-07-19 21:13:11,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 615 transitions, 10024 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-19 21:13:11,885 INFO L242 Difference]: Finished difference. Result has 326 places, 498 transitions, 7746 flow [2022-07-19 21:13:11,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7918, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7746, PETRI_PLACES=326, PETRI_TRANSITIONS=498} [2022-07-19 21:13:11,885 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 167 predicate places. [2022-07-19 21:13:11,885 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 498 transitions, 7746 flow [2022-07-19 21:13:11,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:11,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:11,886 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:13:11,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:13:11,886 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:13:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1344767218, now seen corresponding path program 4 times [2022-07-19 21:13:11,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:11,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198083367] [2022-07-19 21:13:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:11,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:13,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:13,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198083367] [2022-07-19 21:13:13,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198083367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:13,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:13,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-19 21:13:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033186260] [2022-07-19 21:13:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:13,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 21:13:13,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 21:13:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-07-19 21:13:13,116 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-19 21:13:13,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 498 transitions, 7746 flow. Second operand has 24 states, 24 states have (on average 93.08333333333333) internal successors, (2234), 24 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:13,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:13,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-19 21:13:13,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:18,503 INFO L129 PetriNetUnfolder]: 6223/22218 cut-off events. [2022-07-19 21:13:18,504 INFO L130 PetriNetUnfolder]: For 121412/126975 co-relation queries the response was YES. [2022-07-19 21:13:18,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67617 conditions, 22218 events. 6223/22218 cut-off events. For 121412/126975 co-relation queries the response was YES. Maximal size of possible extension queue 2850. Compared 323692 event pairs, 418 based on Foata normal form. 651/21666 useless extension candidates. Maximal degree in co-relation 67494. Up to 3612 conditions per place. [2022-07-19 21:13:18,948 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 259 selfloop transitions, 184 changer transitions 20/573 dead transitions. [2022-07-19 21:13:18,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 573 transitions, 9704 flow [2022-07-19 21:13:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:13:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:13:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2318 transitions. [2022-07-19 21:13:18,951 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2022-07-19 21:13:18,951 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2318 transitions. [2022-07-19 21:13:18,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2318 transitions. [2022-07-19 21:13:18,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:18,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2318 transitions. [2022-07-19 21:13:18,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.58333333333333) internal successors, (2318), 24 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:18,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:18,956 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:18,956 INFO L186 Difference]: Start difference. First operand has 326 places, 498 transitions, 7746 flow. Second operand 24 states and 2318 transitions. [2022-07-19 21:13:18,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 573 transitions, 9704 flow [2022-07-19 21:13:19,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 573 transitions, 9320 flow, removed 70 selfloop flow, removed 22 redundant places. [2022-07-19 21:13:19,829 INFO L242 Difference]: Finished difference. Result has 329 places, 516 transitions, 8480 flow [2022-07-19 21:13:19,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7434, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8480, PETRI_PLACES=329, PETRI_TRANSITIONS=516} [2022-07-19 21:13:19,830 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 170 predicate places. [2022-07-19 21:13:19,831 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 516 transitions, 8480 flow [2022-07-19 21:13:19,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 93.08333333333333) internal successors, (2234), 24 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:19,831 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:19,832 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:13:19,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:13:19,832 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:13:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:19,833 INFO L85 PathProgramCache]: Analyzing trace with hash 636819974, now seen corresponding path program 5 times [2022-07-19 21:13:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:19,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158170302] [2022-07-19 21:13:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158170302] [2022-07-19 21:13:21,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158170302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:21,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:21,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 21:13:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236131621] [2022-07-19 21:13:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:21,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:13:21,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:21,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:13:21,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:13:21,094 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-19 21:13:21,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 516 transitions, 8480 flow. Second operand has 23 states, 23 states have (on average 93.17391304347827) internal successors, (2143), 23 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:21,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:21,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-19 21:13:21,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:26,677 INFO L129 PetriNetUnfolder]: 7036/25191 cut-off events. [2022-07-19 21:13:26,678 INFO L130 PetriNetUnfolder]: For 157579/164263 co-relation queries the response was YES. [2022-07-19 21:13:27,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77704 conditions, 25191 events. 7036/25191 cut-off events. For 157579/164263 co-relation queries the response was YES. Maximal size of possible extension queue 3234. Compared 374652 event pairs, 485 based on Foata normal form. 735/24549 useless extension candidates. Maximal degree in co-relation 77571. Up to 4088 conditions per place. [2022-07-19 21:13:27,123 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 288 selfloop transitions, 176 changer transitions 24/598 dead transitions. [2022-07-19 21:13:27,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 598 transitions, 10646 flow [2022-07-19 21:13:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:13:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:13:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2324 transitions. [2022-07-19 21:13:27,126 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6370614035087719 [2022-07-19 21:13:27,126 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2324 transitions. [2022-07-19 21:13:27,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2324 transitions. [2022-07-19 21:13:27,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:27,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2324 transitions. [2022-07-19 21:13:27,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.83333333333333) internal successors, (2324), 24 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:27,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:27,133 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:27,133 INFO L186 Difference]: Start difference. First operand has 329 places, 516 transitions, 8480 flow. Second operand 24 states and 2324 transitions. [2022-07-19 21:13:27,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 598 transitions, 10646 flow [2022-07-19 21:13:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 598 transitions, 10005 flow, removed 230 selfloop flow, removed 15 redundant places. [2022-07-19 21:13:28,407 INFO L242 Difference]: Finished difference. Result has 337 places, 528 transitions, 8741 flow [2022-07-19 21:13:28,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=8039, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8741, PETRI_PLACES=337, PETRI_TRANSITIONS=528} [2022-07-19 21:13:28,408 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 178 predicate places. [2022-07-19 21:13:28,408 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 528 transitions, 8741 flow [2022-07-19 21:13:28,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 93.17391304347827) internal successors, (2143), 23 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:28,409 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:28,409 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:13:28,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:13:28,409 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:13:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1144263630, now seen corresponding path program 6 times [2022-07-19 21:13:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:28,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401781970] [2022-07-19 21:13:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:29,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:29,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401781970] [2022-07-19 21:13:29,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401781970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:29,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:29,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:13:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190123986] [2022-07-19 21:13:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:13:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:13:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:13:29,808 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-19 21:13:29,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 528 transitions, 8741 flow. Second operand has 22 states, 22 states have (on average 93.31818181818181) internal successors, (2053), 22 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:29,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:29,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-19 21:13:29,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand