./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:22:35,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:22:35,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:22:35,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:22:35,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:22:35,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:22:35,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:22:35,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:22:35,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:22:35,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:22:35,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:22:35,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:22:35,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:22:35,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:22:35,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:22:35,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:22:35,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:22:35,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:22:35,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:22:35,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:22:35,894 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:22:35,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:22:35,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:22:35,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:22:35,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:22:35,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:22:35,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:22:35,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:22:35,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:22:35,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:22:35,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:22:35,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:22:35,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:22:35,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:22:35,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:22:35,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:22:35,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:22:35,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:22:35,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:22:35,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:22:35,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:22:35,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:22:35,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:22:35,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:22:35,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:22:35,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:22:35,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:22:35,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:22:35,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:22:35,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:22:35,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:22:35,936 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:22:35,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:22:35,937 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:22:35,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:22:35,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:22:35,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:22:35,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:22:35,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:22:35,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:22:35,938 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:22:35,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:22:35,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:22:35,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:22:35,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:22:35,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:22:35,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:22:35,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:22:35,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:22:35,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:22:35,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:22:35,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:22:35,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:22:35,940 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:22:35,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:22:35,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:22:35,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-07-13 22:22:36,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:22:36,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:22:36,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:22:36,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:22:36,191 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:22:36,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-07-13 22:22:36,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a279f9459/d555c1bde2f24ad88b5683bfa45e8fdf/FLAG2cf1c3fcc [2022-07-13 22:22:36,552 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:22:36,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-07-13 22:22:36,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a279f9459/d555c1bde2f24ad88b5683bfa45e8fdf/FLAG2cf1c3fcc [2022-07-13 22:22:36,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a279f9459/d555c1bde2f24ad88b5683bfa45e8fdf [2022-07-13 22:22:36,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:22:36,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:22:36,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:22:36,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:22:36,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:22:36,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:22:36" (1/1) ... [2022-07-13 22:22:36,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:36, skipping insertion in model container [2022-07-13 22:22:36,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:22:36" (1/1) ... [2022-07-13 22:22:37,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:22:37,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:22:37,220 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-07-13 22:22:37,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:22:37,235 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:22:37,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-07-13 22:22:37,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:22:37,291 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:22:37,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37 WrapperNode [2022-07-13 22:22:37,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:22:37,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:22:37,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:22:37,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:22:37,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,336 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-07-13 22:22:37,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:22:37,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:22:37,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:22:37,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:22:37,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:22:37,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:22:37,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:22:37,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:22:37,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (1/1) ... [2022-07-13 22:22:37,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:22:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:22:37,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:22:37,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:22:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:22:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:22:37,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:22:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:22:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:22:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-13 22:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-13 22:22:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:22:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:22:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:22:37,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:22:37,422 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:22:37,479 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:22:37,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:22:37,679 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:22:37,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:22:37,725 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:22:37,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:22:37 BoogieIcfgContainer [2022-07-13 22:22:37,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:22:37,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:22:37,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:22:37,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:22:37,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:22:36" (1/3) ... [2022-07-13 22:22:37,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c286afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:22:37, skipping insertion in model container [2022-07-13 22:22:37,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:37" (2/3) ... [2022-07-13 22:22:37,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c286afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:22:37, skipping insertion in model container [2022-07-13 22:22:37,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:22:37" (3/3) ... [2022-07-13 22:22:37,733 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-07-13 22:22:37,736 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:22:37,742 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:22:37,743 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:22:37,743 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:22:37,780 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-13 22:22:37,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-07-13 22:22:37,863 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-07-13 22:22:37,864 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:22:37,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-07-13 22:22:37,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-07-13 22:22:37,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-07-13 22:22:37,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:22:37,889 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@f23b149, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@248f817 [2022-07-13 22:22:37,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 22:22:37,920 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2022-07-13 22:22:37,920 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:22:37,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:37,921 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] [2022-07-13 22:22:37,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash 139718033, now seen corresponding path program 1 times [2022-07-13 22:22:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:37,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540741243] [2022-07-13 22:22:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:37,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:38,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:38,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540741243] [2022-07-13 22:22:38,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540741243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:38,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:38,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:22:38,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032139702] [2022-07-13 22:22:38,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:22:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:38,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:22:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:22:38,444 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-13 22:22:38,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:38,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:38,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-13 22:22:38,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:38,549 INFO L129 PetriNetUnfolder]: 58/321 cut-off events. [2022-07-13 22:22:38,550 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-07-13 22:22:38,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 321 events. 58/321 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1159 event pairs, 13 based on Foata normal form. 10/326 useless extension candidates. Maximal degree in co-relation 368. Up to 100 conditions per place. [2022-07-13 22:22:38,555 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-07-13 22:22:38,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-07-13 22:22:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:22:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:22:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-07-13 22:22:38,570 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-07-13 22:22:38,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-07-13 22:22:38,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-07-13 22:22:38,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:38,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-07-13 22:22:38,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:38,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:38,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:38,588 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-07-13 22:22:38,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-07-13 22:22:38,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-13 22:22:38,600 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-07-13 22:22:38,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2022-07-13 22:22:38,604 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-13 22:22:38,605 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-07-13 22:22:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:38,606 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:38,606 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] [2022-07-13 22:22:38,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:22:38,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:38,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash 501328017, now seen corresponding path program 2 times [2022-07-13 22:22:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:38,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99743939] [2022-07-13 22:22:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:38,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:39,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:39,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99743939] [2022-07-13 22:22:39,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99743939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:39,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:39,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:22:39,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179338041] [2022-07-13 22:22:39,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:39,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:22:39,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:39,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:22:39,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:22:39,896 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:22:39,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:39,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:39,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:22:39,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:42,228 INFO L129 PetriNetUnfolder]: 5295/10126 cut-off events. [2022-07-13 22:22:42,229 INFO L130 PetriNetUnfolder]: For 695/695 co-relation queries the response was YES. [2022-07-13 22:22:42,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18556 conditions, 10126 events. 5295/10126 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 81109 event pairs, 924 based on Foata normal form. 1/10065 useless extension candidates. Maximal degree in co-relation 13896. Up to 2601 conditions per place. [2022-07-13 22:22:42,284 INFO L132 encePairwiseOnDemand]: 118/138 looper letters, 198 selfloop transitions, 21 changer transitions 13/301 dead transitions. [2022-07-13 22:22:42,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 301 transitions, 1136 flow [2022-07-13 22:22:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:22:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:22:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1763 transitions. [2022-07-13 22:22:42,292 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7097423510466989 [2022-07-13 22:22:42,292 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1763 transitions. [2022-07-13 22:22:42,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1763 transitions. [2022-07-13 22:22:42,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:42,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1763 transitions. [2022-07-13 22:22:42,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 97.94444444444444) internal successors, (1763), 18 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,305 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,305 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 18 states and 1763 transitions. [2022-07-13 22:22:42,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 301 transitions, 1136 flow [2022-07-13 22:22:42,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 301 transitions, 1132 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:22:42,310 INFO L242 Difference]: Finished difference. Result has 154 places, 135 transitions, 399 flow [2022-07-13 22:22:42,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=399, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-07-13 22:22:42,311 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 22 predicate places. [2022-07-13 22:22:42,312 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 399 flow [2022-07-13 22:22:42,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,312 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:42,313 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] [2022-07-13 22:22:42,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:22:42,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash 374419285, now seen corresponding path program 3 times [2022-07-13 22:22:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560220869] [2022-07-13 22:22:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:42,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560220869] [2022-07-13 22:22:42,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560220869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:42,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:42,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:22:42,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197198897] [2022-07-13 22:22:42,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:42,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:22:42,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:22:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:22:42,440 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-13 22:22:42,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:42,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-13 22:22:42,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:42,567 INFO L129 PetriNetUnfolder]: 225/1181 cut-off events. [2022-07-13 22:22:42,567 INFO L130 PetriNetUnfolder]: For 248/280 co-relation queries the response was YES. [2022-07-13 22:22:42,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 1181 events. 225/1181 cut-off events. For 248/280 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8976 event pairs, 101 based on Foata normal form. 12/1125 useless extension candidates. Maximal degree in co-relation 2065. Up to 336 conditions per place. [2022-07-13 22:22:42,579 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-13 22:22:42,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 136 transitions, 432 flow [2022-07-13 22:22:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:22:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:22:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-07-13 22:22:42,581 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-07-13 22:22:42,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-07-13 22:22:42,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-07-13 22:22:42,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:42,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-07-13 22:22:42,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,584 INFO L186 Difference]: Start difference. First operand has 154 places, 135 transitions, 399 flow. Second operand 3 states and 383 transitions. [2022-07-13 22:22:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 136 transitions, 432 flow [2022-07-13 22:22:42,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 136 transitions, 416 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-13 22:22:42,594 INFO L242 Difference]: Finished difference. Result has 146 places, 131 transitions, 371 flow [2022-07-13 22:22:42,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=146, PETRI_TRANSITIONS=131} [2022-07-13 22:22:42,596 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2022-07-13 22:22:42,596 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 131 transitions, 371 flow [2022-07-13 22:22:42,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:42,597 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] [2022-07-13 22:22:42,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:22:42,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash -687098003, now seen corresponding path program 4 times [2022-07-13 22:22:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:42,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757948840] [2022-07-13 22:22:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:42,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:42,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757948840] [2022-07-13 22:22:42,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757948840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:42,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:42,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:22:42,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307005814] [2022-07-13 22:22:42,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:42,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:22:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:22:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:22:42,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-13 22:22:42,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 131 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:42,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-13 22:22:42,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:42,800 INFO L129 PetriNetUnfolder]: 153/822 cut-off events. [2022-07-13 22:22:42,800 INFO L130 PetriNetUnfolder]: For 235/265 co-relation queries the response was YES. [2022-07-13 22:22:42,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 822 events. 153/822 cut-off events. For 235/265 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5274 event pairs, 33 based on Foata normal form. 16/787 useless extension candidates. Maximal degree in co-relation 1369. Up to 282 conditions per place. [2022-07-13 22:22:42,805 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-07-13 22:22:42,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 134 transitions, 412 flow [2022-07-13 22:22:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:22:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:22:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-07-13 22:22:42,807 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-07-13 22:22:42,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-07-13 22:22:42,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-07-13 22:22:42,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:42,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-07-13 22:22:42,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,812 INFO L186 Difference]: Start difference. First operand has 146 places, 131 transitions, 371 flow. Second operand 3 states and 383 transitions. [2022-07-13 22:22:42,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 134 transitions, 412 flow [2022-07-13 22:22:42,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 134 transitions, 406 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-13 22:22:42,821 INFO L242 Difference]: Finished difference. Result has 145 places, 129 transitions, 361 flow [2022-07-13 22:22:42,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=361, PETRI_PLACES=145, PETRI_TRANSITIONS=129} [2022-07-13 22:22:42,822 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 13 predicate places. [2022-07-13 22:22:42,822 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 361 flow [2022-07-13 22:22:42,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:42,824 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:42,824 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] [2022-07-13 22:22:42,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:22:42,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:42,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1333540457, now seen corresponding path program 5 times [2022-07-13 22:22:42,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:42,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424091619] [2022-07-13 22:22:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:42,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:43,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424091619] [2022-07-13 22:22:43,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424091619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:43,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:43,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:22:43,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702134969] [2022-07-13 22:22:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:43,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:22:43,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:43,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:22:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:22:43,521 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:22:43,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 129 transitions, 361 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:43,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:43,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:22:43,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:46,227 INFO L129 PetriNetUnfolder]: 7902/16109 cut-off events. [2022-07-13 22:22:46,227 INFO L130 PetriNetUnfolder]: For 10831/10831 co-relation queries the response was YES. [2022-07-13 22:22:46,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39870 conditions, 16109 events. 7902/16109 cut-off events. For 10831/10831 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 146481 event pairs, 2136 based on Foata normal form. 1/16003 useless extension candidates. Maximal degree in co-relation 29254. Up to 3677 conditions per place. [2022-07-13 22:22:46,359 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 211 selfloop transitions, 26 changer transitions 13/319 dead transitions. [2022-07-13 22:22:46,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 319 transitions, 1554 flow [2022-07-13 22:22:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:22:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:22:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1564 transitions. [2022-07-13 22:22:46,363 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-07-13 22:22:46,363 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1564 transitions. [2022-07-13 22:22:46,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1564 transitions. [2022-07-13 22:22:46,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:46,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1564 transitions. [2022-07-13 22:22:46,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.75) internal successors, (1564), 16 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,370 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,370 INFO L186 Difference]: Start difference. First operand has 145 places, 129 transitions, 361 flow. Second operand 16 states and 1564 transitions. [2022-07-13 22:22:46,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 319 transitions, 1554 flow [2022-07-13 22:22:46,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 319 transitions, 1550 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:22:46,450 INFO L242 Difference]: Finished difference. Result has 172 places, 150 transitions, 610 flow [2022-07-13 22:22:46,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=610, PETRI_PLACES=172, PETRI_TRANSITIONS=150} [2022-07-13 22:22:46,450 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 40 predicate places. [2022-07-13 22:22:46,451 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 150 transitions, 610 flow [2022-07-13 22:22:46,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,451 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:46,452 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] [2022-07-13 22:22:46,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:22:46,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1948823381, now seen corresponding path program 6 times [2022-07-13 22:22:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:46,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738724257] [2022-07-13 22:22:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:46,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738724257] [2022-07-13 22:22:46,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738724257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:46,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:46,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:22:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426599033] [2022-07-13 22:22:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:22:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:22:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:22:46,506 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-13 22:22:46,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 150 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:46,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-13 22:22:46,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:46,856 INFO L129 PetriNetUnfolder]: 384/2429 cut-off events. [2022-07-13 22:22:46,856 INFO L130 PetriNetUnfolder]: For 1691/1843 co-relation queries the response was YES. [2022-07-13 22:22:46,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5263 conditions, 2429 events. 384/2429 cut-off events. For 1691/1843 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23829 event pairs, 136 based on Foata normal form. 60/2403 useless extension candidates. Maximal degree in co-relation 5147. Up to 660 conditions per place. [2022-07-13 22:22:46,867 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2022-07-13 22:22:46,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 152 transitions, 646 flow [2022-07-13 22:22:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:22:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:22:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-07-13 22:22:46,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-07-13 22:22:46,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-07-13 22:22:46,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-07-13 22:22:46,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:46,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-07-13 22:22:46,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,872 INFO L186 Difference]: Start difference. First operand has 172 places, 150 transitions, 610 flow. Second operand 3 states and 382 transitions. [2022-07-13 22:22:46,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 152 transitions, 646 flow [2022-07-13 22:22:46,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 628 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-07-13 22:22:46,883 INFO L242 Difference]: Finished difference. Result has 166 places, 148 transitions, 586 flow [2022-07-13 22:22:46,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=166, PETRI_TRANSITIONS=148} [2022-07-13 22:22:46,885 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 34 predicate places. [2022-07-13 22:22:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 148 transitions, 586 flow [2022-07-13 22:22:46,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:46,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:46,886 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] [2022-07-13 22:22:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:22:46,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1125467677, now seen corresponding path program 7 times [2022-07-13 22:22:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:46,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018906203] [2022-07-13 22:22:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:47,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:47,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018906203] [2022-07-13 22:22:47,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018906203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:47,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:47,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:22:47,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746302528] [2022-07-13 22:22:47,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:47,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:22:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:22:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:22:47,530 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:22:47,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 148 transitions, 586 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:47,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:47,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:22:47,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:50,408 INFO L129 PetriNetUnfolder]: 7764/17938 cut-off events. [2022-07-13 22:22:50,408 INFO L130 PetriNetUnfolder]: For 30855/30855 co-relation queries the response was YES. [2022-07-13 22:22:50,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51930 conditions, 17938 events. 7764/17938 cut-off events. For 30855/30855 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 178716 event pairs, 2035 based on Foata normal form. 1/17838 useless extension candidates. Maximal degree in co-relation 40974. Up to 3287 conditions per place. [2022-07-13 22:22:50,569 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 218 selfloop transitions, 43 changer transitions 9/339 dead transitions. [2022-07-13 22:22:50,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 339 transitions, 2090 flow [2022-07-13 22:22:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:22:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:22:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1566 transitions. [2022-07-13 22:22:50,573 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7092391304347826 [2022-07-13 22:22:50,573 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1566 transitions. [2022-07-13 22:22:50,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1566 transitions. [2022-07-13 22:22:50,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:50,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1566 transitions. [2022-07-13 22:22:50,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.875) internal successors, (1566), 16 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:50,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:50,581 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:50,581 INFO L186 Difference]: Start difference. First operand has 166 places, 148 transitions, 586 flow. Second operand 16 states and 1566 transitions. [2022-07-13 22:22:50,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 339 transitions, 2090 flow [2022-07-13 22:22:50,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 339 transitions, 2074 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-13 22:22:50,737 INFO L242 Difference]: Finished difference. Result has 192 places, 174 transitions, 999 flow [2022-07-13 22:22:50,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=999, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-07-13 22:22:50,738 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 60 predicate places. [2022-07-13 22:22:50,738 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 999 flow [2022-07-13 22:22:50,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:50,739 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:50,739 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] [2022-07-13 22:22:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:22:50,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 701019377, now seen corresponding path program 8 times [2022-07-13 22:22:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:50,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465634814] [2022-07-13 22:22:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:51,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:51,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465634814] [2022-07-13 22:22:51,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465634814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:51,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:51,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:22:51,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476416557] [2022-07-13 22:22:51,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:51,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:22:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:22:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:22:51,550 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:22:51,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 999 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:51,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:51,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:22:51,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:22:55,740 INFO L129 PetriNetUnfolder]: 10782/28342 cut-off events. [2022-07-13 22:22:55,740 INFO L130 PetriNetUnfolder]: For 82469/82469 co-relation queries the response was YES. [2022-07-13 22:22:55,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87957 conditions, 28342 events. 10782/28342 cut-off events. For 82469/82469 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 334333 event pairs, 2973 based on Foata normal form. 1/28025 useless extension candidates. Maximal degree in co-relation 87344. Up to 5265 conditions per place. [2022-07-13 22:22:56,061 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 313 selfloop transitions, 49 changer transitions 8/439 dead transitions. [2022-07-13 22:22:56,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 439 transitions, 3480 flow [2022-07-13 22:22:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:22:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:22:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2022-07-13 22:22:56,065 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2022-07-13 22:22:56,065 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2022-07-13 22:22:56,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2022-07-13 22:22:56,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:22:56,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2022-07-13 22:22:56,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:56,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:56,073 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:56,073 INFO L186 Difference]: Start difference. First operand has 192 places, 174 transitions, 999 flow. Second operand 16 states and 1597 transitions. [2022-07-13 22:22:56,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 439 transitions, 3480 flow [2022-07-13 22:22:56,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 439 transitions, 3321 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-13 22:22:56,745 INFO L242 Difference]: Finished difference. Result has 212 places, 204 transitions, 1517 flow [2022-07-13 22:22:56,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1517, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2022-07-13 22:22:56,746 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 80 predicate places. [2022-07-13 22:22:56,746 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 1517 flow [2022-07-13 22:22:56,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:56,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:22:56,747 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] [2022-07-13 22:22:56,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:22:56,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:22:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:22:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1490010129, now seen corresponding path program 9 times [2022-07-13 22:22:56,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:22:56,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903525661] [2022-07-13 22:22:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:22:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:22:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:22:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:22:57,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:22:57,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903525661] [2022-07-13 22:22:57,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903525661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:22:57,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:22:57,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:22:57,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91125773] [2022-07-13 22:22:57,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:22:57,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:22:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:22:57,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:22:57,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:22:57,447 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:22:57,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 1517 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:22:57,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:22:57,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:22:57,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:23:02,996 INFO L129 PetriNetUnfolder]: 12842/36195 cut-off events. [2022-07-13 22:23:02,997 INFO L130 PetriNetUnfolder]: For 157063/157063 co-relation queries the response was YES. [2022-07-13 22:23:03,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124813 conditions, 36195 events. 12842/36195 cut-off events. For 157063/157063 co-relation queries the response was YES. Maximal size of possible extension queue 2356. Compared 463400 event pairs, 3643 based on Foata normal form. 1/35848 useless extension candidates. Maximal degree in co-relation 123560. Up to 7155 conditions per place. [2022-07-13 22:23:03,451 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 386 selfloop transitions, 56 changer transitions 10/521 dead transitions. [2022-07-13 22:23:03,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 521 transitions, 5596 flow [2022-07-13 22:23:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:23:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:23:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1570 transitions. [2022-07-13 22:23:03,454 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7110507246376812 [2022-07-13 22:23:03,455 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1570 transitions. [2022-07-13 22:23:03,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1570 transitions. [2022-07-13 22:23:03,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:23:03,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1570 transitions. [2022-07-13 22:23:03,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.125) internal successors, (1570), 16 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:03,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:03,462 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:03,462 INFO L186 Difference]: Start difference. First operand has 212 places, 204 transitions, 1517 flow. Second operand 16 states and 1570 transitions. [2022-07-13 22:23:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 521 transitions, 5596 flow [2022-07-13 22:23:04,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 521 transitions, 5372 flow, removed 108 selfloop flow, removed 4 redundant places. [2022-07-13 22:23:04,643 INFO L242 Difference]: Finished difference. Result has 234 places, 243 transitions, 2204 flow [2022-07-13 22:23:04,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2204, PETRI_PLACES=234, PETRI_TRANSITIONS=243} [2022-07-13 22:23:04,644 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 102 predicate places. [2022-07-13 22:23:04,644 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 243 transitions, 2204 flow [2022-07-13 22:23:04,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:04,645 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:23:04,645 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:23:04,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:23:04,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:23:04,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:23:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash -280997747, now seen corresponding path program 10 times [2022-07-13 22:23:04,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:23:04,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754519350] [2022-07-13 22:23:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:23:04,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:23:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:23:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:23:05,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:23:05,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754519350] [2022-07-13 22:23:05,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754519350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:23:05,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:23:05,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:23:05,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112722660] [2022-07-13 22:23:05,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:23:05,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:23:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:23:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:23:05,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:23:05,180 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:23:05,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 243 transitions, 2204 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:05,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:23:05,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:23:05,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:23:12,328 INFO L129 PetriNetUnfolder]: 13769/41000 cut-off events. [2022-07-13 22:23:12,329 INFO L130 PetriNetUnfolder]: For 238538/238538 co-relation queries the response was YES. [2022-07-13 22:23:12,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150283 conditions, 41000 events. 13769/41000 cut-off events. For 238538/238538 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 548356 event pairs, 4246 based on Foata normal form. 1/40348 useless extension candidates. Maximal degree in co-relation 148779. Up to 8359 conditions per place. [2022-07-13 22:23:12,885 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 380 selfloop transitions, 72 changer transitions 12/533 dead transitions. [2022-07-13 22:23:12,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 533 transitions, 5956 flow [2022-07-13 22:23:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:23:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:23:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1580 transitions. [2022-07-13 22:23:12,889 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7155797101449275 [2022-07-13 22:23:12,889 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1580 transitions. [2022-07-13 22:23:12,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1580 transitions. [2022-07-13 22:23:12,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:23:12,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1580 transitions. [2022-07-13 22:23:12,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.75) internal successors, (1580), 16 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:12,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:12,895 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:12,895 INFO L186 Difference]: Start difference. First operand has 234 places, 243 transitions, 2204 flow. Second operand 16 states and 1580 transitions. [2022-07-13 22:23:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 533 transitions, 5956 flow [2022-07-13 22:23:14,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 533 transitions, 5681 flow, removed 133 selfloop flow, removed 5 redundant places. [2022-07-13 22:23:14,540 INFO L242 Difference]: Finished difference. Result has 254 places, 280 transitions, 2962 flow [2022-07-13 22:23:14,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2962, PETRI_PLACES=254, PETRI_TRANSITIONS=280} [2022-07-13 22:23:14,541 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 122 predicate places. [2022-07-13 22:23:14,541 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 280 transitions, 2962 flow [2022-07-13 22:23:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:14,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:23:14,542 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] [2022-07-13 22:23:14,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:23:14,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:23:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:23:14,543 INFO L85 PathProgramCache]: Analyzing trace with hash -859018579, now seen corresponding path program 11 times [2022-07-13 22:23:14,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:23:14,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764316796] [2022-07-13 22:23:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:23:14,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:23:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:23:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:23:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:23:15,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764316796] [2022-07-13 22:23:15,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764316796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:23:15,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:23:15,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:23:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255919076] [2022-07-13 22:23:15,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:23:15,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:23:15,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:23:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:23:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:23:15,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:23:15,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 280 transitions, 2962 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:15,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:23:15,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:23:15,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:23:23,684 INFO L129 PetriNetUnfolder]: 14580/45845 cut-off events. [2022-07-13 22:23:23,684 INFO L130 PetriNetUnfolder]: For 341761/341761 co-relation queries the response was YES. [2022-07-13 22:23:24,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179544 conditions, 45845 events. 14580/45845 cut-off events. For 341761/341761 co-relation queries the response was YES. Maximal size of possible extension queue 3131. Compared 643763 event pairs, 5024 based on Foata normal form. 1/45472 useless extension candidates. Maximal degree in co-relation 177301. Up to 7535 conditions per place. [2022-07-13 22:23:24,373 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 560 selfloop transitions, 124 changer transitions 11/764 dead transitions. [2022-07-13 22:23:24,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 764 transitions, 10991 flow [2022-07-13 22:23:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:23:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:23:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1567 transitions. [2022-07-13 22:23:24,385 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7096920289855072 [2022-07-13 22:23:24,385 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1567 transitions. [2022-07-13 22:23:24,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1567 transitions. [2022-07-13 22:23:24,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:23:24,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1567 transitions. [2022-07-13 22:23:24,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.9375) internal successors, (1567), 16 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:24,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:24,402 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:24,402 INFO L186 Difference]: Start difference. First operand has 254 places, 280 transitions, 2962 flow. Second operand 16 states and 1567 transitions. [2022-07-13 22:23:24,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 764 transitions, 10991 flow [2022-07-13 22:23:27,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 764 transitions, 10413 flow, removed 234 selfloop flow, removed 6 redundant places. [2022-07-13 22:23:27,536 INFO L242 Difference]: Finished difference. Result has 273 places, 364 transitions, 4693 flow [2022-07-13 22:23:27,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4693, PETRI_PLACES=273, PETRI_TRANSITIONS=364} [2022-07-13 22:23:27,537 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 141 predicate places. [2022-07-13 22:23:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 364 transitions, 4693 flow [2022-07-13 22:23:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:27,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:23:27,538 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] [2022-07-13 22:23:27,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:23:27,538 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:23:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:23:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash -980182085, now seen corresponding path program 12 times [2022-07-13 22:23:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:23:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079186124] [2022-07-13 22:23:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:23:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:23:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:23:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:23:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:23:28,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079186124] [2022-07-13 22:23:28,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079186124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:23:28,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:23:28,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:23:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774760505] [2022-07-13 22:23:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:23:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:23:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:23:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:23:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:23:28,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-13 22:23:28,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 364 transitions, 4693 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:23:28,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:23:28,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-13 22:23:28,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand