./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 791161d1 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-?-791161d [2022-07-22 21:58:13,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:58:13,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:58:13,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:58:13,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:58:13,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:58:13,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:58:13,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:58:13,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:58:13,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:58:13,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:58:13,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:58:13,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:58:13,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:58:13,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:58:13,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:58:13,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:58:13,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:58:13,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:58:13,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:58:13,092 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:58:13,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:58:13,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:58:13,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:58:13,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:58:13,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:58:13,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:58:13,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:58:13,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:58:13,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:58:13,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:58:13,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:58:13,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:58:13,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:58:13,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:58:13,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:58:13,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:58:13,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:58:13,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:58:13,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:58:13,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:58:13,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:58:13,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:58:13,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:58:13,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:58:13,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:58:13,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:58:13,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:58:13,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:58:13,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:58:13,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:58:13,137 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:58:13,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:58:13,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:58:13,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:58:13,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:58:13,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:58:13,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:58:13,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:58:13,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:58:13,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:58:13,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:58:13,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:58:13,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:58:13,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:58:13,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:58:13,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:58:13,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:58:13,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:58:13,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:58:13,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:58:13,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:58:13,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:58:13,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:58:13,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:58:13,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:58:13,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-07-22 21:58:13,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:58:13,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:58:13,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:58:13,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:58:13,412 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:58:13,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-07-22 21:58:13,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60fd41169/0ff5d0fcc7b04d43a438ba977ba53d03/FLAGc886f068c [2022-07-22 21:58:13,893 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:58:13,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-07-22 21:58:13,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60fd41169/0ff5d0fcc7b04d43a438ba977ba53d03/FLAGc886f068c [2022-07-22 21:58:14,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60fd41169/0ff5d0fcc7b04d43a438ba977ba53d03 [2022-07-22 21:58:14,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:58:14,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:58:14,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:58:14,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:58:14,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:58:14,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244998dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14, skipping insertion in model container [2022-07-22 21:58:14,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:58:14,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:58:14,483 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] [2022-07-22 21:58:14,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:58:14,492 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:58:14,518 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] [2022-07-22 21:58:14,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:58:14,537 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:58:14,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14 WrapperNode [2022-07-22 21:58:14,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:58:14,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:58:14,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:58:14,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:58:14,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,587 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-07-22 21:58:14,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:58:14,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:58:14,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:58:14,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:58:14,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:58:14,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:58:14,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:58:14,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:58:14,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (1/1) ... [2022-07-22 21:58:14,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:58:14,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:58:14,669 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) [2022-07-22 21:58:14,674 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 [2022-07-22 21:58:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:58:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:58:14,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:58:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:58:14,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:58:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:58:14,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:58:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-22 21:58:14,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-22 21:58:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:58:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:58:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:58:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:58:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:58:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:58:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:58:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:58:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:58:14,705 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:58:14,818 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:58:14,821 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:58:15,100 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:58:15,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:58:15,164 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:58:15,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:58:15 BoogieIcfgContainer [2022-07-22 21:58:15,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:58:15,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:58:15,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:58:15,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:58:15,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:58:14" (1/3) ... [2022-07-22 21:58:15,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c66a1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:58:15, skipping insertion in model container [2022-07-22 21:58:15,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:14" (2/3) ... [2022-07-22 21:58:15,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c66a1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:58:15, skipping insertion in model container [2022-07-22 21:58:15,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:58:15" (3/3) ... [2022-07-22 21:58:15,177 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-07-22 21:58:15,183 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:58:15,191 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:58:15,191 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:58:15,192 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:58:15,291 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-22 21:58:15,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-07-22 21:58:15,391 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-07-22 21:58:15,391 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:58:15,394 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. [2022-07-22 21:58:15,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-07-22 21:58:15,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-07-22 21:58:15,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:58:15,416 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@6382706c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b3a2367 [2022-07-22 21:58:15,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:58:15,442 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2022-07-22 21:58:15,442 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:58:15,443 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:15,443 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] [2022-07-22 21:58:15,444 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)] === [2022-07-22 21:58:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 139718033, now seen corresponding path program 1 times [2022-07-22 21:58:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:15,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264560498] [2022-07-22 21:58:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:15,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:16,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:16,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264560498] [2022-07-22 21:58:16,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264560498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:16,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:16,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:58:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679656891] [2022-07-22 21:58:16,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:16,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:58:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:16,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:58:16,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:58:16,096 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-22 21:58:16,100 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) [2022-07-22 21:58:16,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:16,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-22 21:58:16,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:16,227 INFO L129 PetriNetUnfolder]: 58/321 cut-off events. [2022-07-22 21:58:16,227 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-07-22 21:58:16,234 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. [2022-07-22 21:58:16,237 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-07-22 21:58:16,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-07-22 21:58:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:58:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:58:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-07-22 21:58:16,258 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-07-22 21:58:16,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-07-22 21:58:16,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-07-22 21:58:16,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:16,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-07-22 21:58:16,280 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) [2022-07-22 21:58:16,289 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) [2022-07-22 21:58:16,289 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) [2022-07-22 21:58:16,291 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-07-22 21:58:16,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-07-22 21:58:16,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-22 21:58:16,304 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-07-22 21:58:16,306 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} [2022-07-22 21:58:16,311 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-22 21:58:16,312 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-07-22 21:58:16,313 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) [2022-07-22 21:58:16,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:16,313 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] [2022-07-22 21:58:16,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:58:16,314 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)] === [2022-07-22 21:58:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash 501328017, now seen corresponding path program 2 times [2022-07-22 21:58:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:16,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919497685] [2022-07-22 21:58:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:17,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919497685] [2022-07-22 21:58:17,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919497685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:17,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:17,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:58:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675655541] [2022-07-22 21:58:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:17,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:58:17,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:17,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:58:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:58:17,923 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:58:17,927 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) [2022-07-22 21:58:17,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:17,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:58:17,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:21,001 INFO L129 PetriNetUnfolder]: 5295/10126 cut-off events. [2022-07-22 21:58:21,001 INFO L130 PetriNetUnfolder]: For 695/695 co-relation queries the response was YES. [2022-07-22 21:58:21,024 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. [2022-07-22 21:58:21,100 INFO L132 encePairwiseOnDemand]: 118/138 looper letters, 198 selfloop transitions, 21 changer transitions 13/301 dead transitions. [2022-07-22 21:58:21,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 301 transitions, 1136 flow [2022-07-22 21:58:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:58:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:58:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1763 transitions. [2022-07-22 21:58:21,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7097423510466989 [2022-07-22 21:58:21,105 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1763 transitions. [2022-07-22 21:58:21,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1763 transitions. [2022-07-22 21:58:21,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:21,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1763 transitions. [2022-07-22 21:58:21,111 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) [2022-07-22 21:58:21,116 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) [2022-07-22 21:58:21,118 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) [2022-07-22 21:58:21,118 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 18 states and 1763 transitions. [2022-07-22 21:58:21,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 301 transitions, 1136 flow [2022-07-22 21:58:21,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 301 transitions, 1132 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:58:21,125 INFO L242 Difference]: Finished difference. Result has 154 places, 135 transitions, 399 flow [2022-07-22 21:58:21,126 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} [2022-07-22 21:58:21,127 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 22 predicate places. [2022-07-22 21:58:21,127 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 399 flow [2022-07-22 21:58:21,128 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) [2022-07-22 21:58:21,128 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:21,128 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] [2022-07-22 21:58:21,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:58:21,129 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)] === [2022-07-22 21:58:21,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:21,130 INFO L85 PathProgramCache]: Analyzing trace with hash 374419285, now seen corresponding path program 3 times [2022-07-22 21:58:21,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:21,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198805274] [2022-07-22 21:58:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:21,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198805274] [2022-07-22 21:58:21,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198805274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:21,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:21,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:58:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840701531] [2022-07-22 21:58:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:21,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:58:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:58:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:58:21,259 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-22 21:58:21,261 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) [2022-07-22 21:58:21,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:21,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-22 21:58:21,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:21,437 INFO L129 PetriNetUnfolder]: 225/1181 cut-off events. [2022-07-22 21:58:21,437 INFO L130 PetriNetUnfolder]: For 248/280 co-relation queries the response was YES. [2022-07-22 21:58:21,442 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. [2022-07-22 21:58:21,449 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-22 21:58:21,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 136 transitions, 432 flow [2022-07-22 21:58:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:58:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:58:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-07-22 21:58:21,452 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-07-22 21:58:21,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-07-22 21:58:21,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-07-22 21:58:21,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:21,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-07-22 21:58:21,455 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) [2022-07-22 21:58:21,456 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) [2022-07-22 21:58:21,456 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) [2022-07-22 21:58:21,456 INFO L186 Difference]: Start difference. First operand has 154 places, 135 transitions, 399 flow. Second operand 3 states and 383 transitions. [2022-07-22 21:58:21,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 136 transitions, 432 flow [2022-07-22 21:58:21,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 136 transitions, 416 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-22 21:58:21,468 INFO L242 Difference]: Finished difference. Result has 146 places, 131 transitions, 371 flow [2022-07-22 21:58:21,469 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} [2022-07-22 21:58:21,471 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2022-07-22 21:58:21,471 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 131 transitions, 371 flow [2022-07-22 21:58:21,472 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) [2022-07-22 21:58:21,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:21,472 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] [2022-07-22 21:58:21,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:58:21,473 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)] === [2022-07-22 21:58:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash -687098003, now seen corresponding path program 4 times [2022-07-22 21:58:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566208925] [2022-07-22 21:58:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:21,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:21,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566208925] [2022-07-22 21:58:21,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566208925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:21,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:21,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:58:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183692458] [2022-07-22 21:58:21,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:21,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:58:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:21,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:58:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:58:21,629 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-22 21:58:21,630 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) [2022-07-22 21:58:21,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:21,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-22 21:58:21,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:21,787 INFO L129 PetriNetUnfolder]: 153/822 cut-off events. [2022-07-22 21:58:21,787 INFO L130 PetriNetUnfolder]: For 235/265 co-relation queries the response was YES. [2022-07-22 21:58:21,791 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. [2022-07-22 21:58:21,793 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-07-22 21:58:21,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 134 transitions, 412 flow [2022-07-22 21:58:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:58:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:58:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-07-22 21:58:21,797 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-07-22 21:58:21,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-07-22 21:58:21,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-07-22 21:58:21,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:21,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-07-22 21:58:21,801 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) [2022-07-22 21:58:21,803 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) [2022-07-22 21:58:21,803 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) [2022-07-22 21:58:21,803 INFO L186 Difference]: Start difference. First operand has 146 places, 131 transitions, 371 flow. Second operand 3 states and 383 transitions. [2022-07-22 21:58:21,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 134 transitions, 412 flow [2022-07-22 21:58:21,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 134 transitions, 406 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-22 21:58:21,815 INFO L242 Difference]: Finished difference. Result has 145 places, 129 transitions, 361 flow [2022-07-22 21:58:21,816 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} [2022-07-22 21:58:21,817 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 13 predicate places. [2022-07-22 21:58:21,817 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 361 flow [2022-07-22 21:58:21,818 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) [2022-07-22 21:58:21,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:21,818 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] [2022-07-22 21:58:21,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:58:21,819 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)] === [2022-07-22 21:58:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1333540457, now seen corresponding path program 5 times [2022-07-22 21:58:21,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:21,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115043854] [2022-07-22 21:58:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:21,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:22,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:22,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115043854] [2022-07-22 21:58:22,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115043854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:22,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:22,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:58:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11486754] [2022-07-22 21:58:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:22,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:58:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:58:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:58:22,944 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:58:22,946 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) [2022-07-22 21:58:22,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:22,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:58:22,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:26,293 INFO L129 PetriNetUnfolder]: 7902/16109 cut-off events. [2022-07-22 21:58:26,293 INFO L130 PetriNetUnfolder]: For 10831/10831 co-relation queries the response was YES. [2022-07-22 21:58:26,372 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. [2022-07-22 21:58:26,471 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 211 selfloop transitions, 26 changer transitions 13/319 dead transitions. [2022-07-22 21:58:26,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 319 transitions, 1554 flow [2022-07-22 21:58:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:58:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:58:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1564 transitions. [2022-07-22 21:58:26,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-07-22 21:58:26,477 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1564 transitions. [2022-07-22 21:58:26,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1564 transitions. [2022-07-22 21:58:26,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:26,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1564 transitions. [2022-07-22 21:58:26,481 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) [2022-07-22 21:58:26,485 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) [2022-07-22 21:58:26,486 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) [2022-07-22 21:58:26,486 INFO L186 Difference]: Start difference. First operand has 145 places, 129 transitions, 361 flow. Second operand 16 states and 1564 transitions. [2022-07-22 21:58:26,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 319 transitions, 1554 flow [2022-07-22 21:58:26,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 319 transitions, 1550 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:58:26,605 INFO L242 Difference]: Finished difference. Result has 172 places, 150 transitions, 610 flow [2022-07-22 21:58:26,605 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} [2022-07-22 21:58:26,607 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 40 predicate places. [2022-07-22 21:58:26,608 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 150 transitions, 610 flow [2022-07-22 21:58:26,608 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) [2022-07-22 21:58:26,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:26,609 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] [2022-07-22 21:58:26,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:58:26,609 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)] === [2022-07-22 21:58:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1948823381, now seen corresponding path program 6 times [2022-07-22 21:58:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:26,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762440847] [2022-07-22 21:58:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:26,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:26,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762440847] [2022-07-22 21:58:26,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762440847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:26,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:26,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:58:26,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072824082] [2022-07-22 21:58:26,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:26,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:58:26,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:58:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:58:26,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-22 21:58:26,795 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) [2022-07-22 21:58:26,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:26,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-22 21:58:26,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:27,061 INFO L129 PetriNetUnfolder]: 384/2429 cut-off events. [2022-07-22 21:58:27,061 INFO L130 PetriNetUnfolder]: For 1691/1843 co-relation queries the response was YES. [2022-07-22 21:58:27,077 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. [2022-07-22 21:58:27,085 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2022-07-22 21:58:27,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 152 transitions, 646 flow [2022-07-22 21:58:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:58:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:58:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-07-22 21:58:27,087 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-07-22 21:58:27,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-07-22 21:58:27,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-07-22 21:58:27,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:27,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-07-22 21:58:27,089 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) [2022-07-22 21:58:27,090 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) [2022-07-22 21:58:27,091 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) [2022-07-22 21:58:27,091 INFO L186 Difference]: Start difference. First operand has 172 places, 150 transitions, 610 flow. Second operand 3 states and 382 transitions. [2022-07-22 21:58:27,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 152 transitions, 646 flow [2022-07-22 21:58:27,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 628 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-07-22 21:58:27,109 INFO L242 Difference]: Finished difference. Result has 166 places, 148 transitions, 586 flow [2022-07-22 21:58:27,109 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} [2022-07-22 21:58:27,112 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 34 predicate places. [2022-07-22 21:58:27,112 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 148 transitions, 586 flow [2022-07-22 21:58:27,113 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) [2022-07-22 21:58:27,113 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:27,113 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] [2022-07-22 21:58:27,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:58:27,113 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)] === [2022-07-22 21:58:27,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1125467677, now seen corresponding path program 7 times [2022-07-22 21:58:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:27,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608982967] [2022-07-22 21:58:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:27,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:28,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:28,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608982967] [2022-07-22 21:58:28,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608982967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:28,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:28,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:58:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236880128] [2022-07-22 21:58:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:28,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:58:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:58:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:58:28,075 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:58:28,076 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) [2022-07-22 21:58:28,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:28,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:58:28,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:31,458 INFO L129 PetriNetUnfolder]: 7764/17938 cut-off events. [2022-07-22 21:58:31,458 INFO L130 PetriNetUnfolder]: For 30855/30855 co-relation queries the response was YES. [2022-07-22 21:58:31,548 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. [2022-07-22 21:58:31,629 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 218 selfloop transitions, 43 changer transitions 9/339 dead transitions. [2022-07-22 21:58:31,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 339 transitions, 2090 flow [2022-07-22 21:58:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:58:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:58:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1566 transitions. [2022-07-22 21:58:31,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7092391304347826 [2022-07-22 21:58:31,634 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1566 transitions. [2022-07-22 21:58:31,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1566 transitions. [2022-07-22 21:58:31,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:31,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1566 transitions. [2022-07-22 21:58:31,639 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) [2022-07-22 21:58:31,642 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) [2022-07-22 21:58:31,643 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) [2022-07-22 21:58:31,643 INFO L186 Difference]: Start difference. First operand has 166 places, 148 transitions, 586 flow. Second operand 16 states and 1566 transitions. [2022-07-22 21:58:31,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 339 transitions, 2090 flow [2022-07-22 21:58:31,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 339 transitions, 2074 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-22 21:58:31,832 INFO L242 Difference]: Finished difference. Result has 192 places, 174 transitions, 999 flow [2022-07-22 21:58:31,833 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} [2022-07-22 21:58:31,834 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 60 predicate places. [2022-07-22 21:58:31,834 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 999 flow [2022-07-22 21:58:31,834 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) [2022-07-22 21:58:31,835 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:31,835 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] [2022-07-22 21:58:31,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:58:31,835 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)] === [2022-07-22 21:58:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash 701019377, now seen corresponding path program 8 times [2022-07-22 21:58:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:31,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124831158] [2022-07-22 21:58:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:32,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124831158] [2022-07-22 21:58:32,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124831158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:32,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:32,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:58:32,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37282308] [2022-07-22 21:58:32,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:32,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:58:32,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:58:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:58:32,846 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:58:32,847 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) [2022-07-22 21:58:32,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:32,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:58:32,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:37,597 INFO L129 PetriNetUnfolder]: 10782/28342 cut-off events. [2022-07-22 21:58:37,597 INFO L130 PetriNetUnfolder]: For 82469/82469 co-relation queries the response was YES. [2022-07-22 21:58:37,939 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. [2022-07-22 21:58:38,057 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 313 selfloop transitions, 49 changer transitions 8/439 dead transitions. [2022-07-22 21:58:38,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 439 transitions, 3480 flow [2022-07-22 21:58:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:58:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:58:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2022-07-22 21:58:38,062 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2022-07-22 21:58:38,062 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2022-07-22 21:58:38,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2022-07-22 21:58:38,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:38,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2022-07-22 21:58:38,066 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) [2022-07-22 21:58:38,071 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) [2022-07-22 21:58:38,071 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) [2022-07-22 21:58:38,072 INFO L186 Difference]: Start difference. First operand has 192 places, 174 transitions, 999 flow. Second operand 16 states and 1597 transitions. [2022-07-22 21:58:38,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 439 transitions, 3480 flow [2022-07-22 21:58:38,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 439 transitions, 3321 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-22 21:58:38,701 INFO L242 Difference]: Finished difference. Result has 212 places, 204 transitions, 1517 flow [2022-07-22 21:58:38,702 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} [2022-07-22 21:58:38,703 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 80 predicate places. [2022-07-22 21:58:38,703 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 1517 flow [2022-07-22 21:58:38,703 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) [2022-07-22 21:58:38,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:38,704 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] [2022-07-22 21:58:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:58:38,704 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)] === [2022-07-22 21:58:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1490010129, now seen corresponding path program 9 times [2022-07-22 21:58:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:38,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572785988] [2022-07-22 21:58:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:39,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:39,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572785988] [2022-07-22 21:58:39,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572785988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:39,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:39,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:58:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407254293] [2022-07-22 21:58:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:58:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:58:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:58:39,680 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:58:39,681 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) [2022-07-22 21:58:39,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:39,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:58:39,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:45,952 INFO L129 PetriNetUnfolder]: 12842/36195 cut-off events. [2022-07-22 21:58:45,953 INFO L130 PetriNetUnfolder]: For 157063/157063 co-relation queries the response was YES. [2022-07-22 21:58:46,329 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. [2022-07-22 21:58:46,579 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 386 selfloop transitions, 56 changer transitions 10/521 dead transitions. [2022-07-22 21:58:46,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 521 transitions, 5596 flow [2022-07-22 21:58:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:58:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:58:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1570 transitions. [2022-07-22 21:58:46,585 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7110507246376812 [2022-07-22 21:58:46,585 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1570 transitions. [2022-07-22 21:58:46,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1570 transitions. [2022-07-22 21:58:46,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:46,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1570 transitions. [2022-07-22 21:58:46,589 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) [2022-07-22 21:58:46,593 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) [2022-07-22 21:58:46,594 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) [2022-07-22 21:58:46,594 INFO L186 Difference]: Start difference. First operand has 212 places, 204 transitions, 1517 flow. Second operand 16 states and 1570 transitions. [2022-07-22 21:58:46,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 521 transitions, 5596 flow [2022-07-22 21:58:47,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 521 transitions, 5372 flow, removed 108 selfloop flow, removed 4 redundant places. [2022-07-22 21:58:47,717 INFO L242 Difference]: Finished difference. Result has 234 places, 243 transitions, 2204 flow [2022-07-22 21:58:47,718 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} [2022-07-22 21:58:47,718 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 102 predicate places. [2022-07-22 21:58:47,719 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 243 transitions, 2204 flow [2022-07-22 21:58:47,719 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) [2022-07-22 21:58:47,719 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:47,719 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] [2022-07-22 21:58:47,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:58:47,720 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)] === [2022-07-22 21:58:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash -280997747, now seen corresponding path program 10 times [2022-07-22 21:58:47,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:47,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509368361] [2022-07-22 21:58:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:48,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:48,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509368361] [2022-07-22 21:58:48,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509368361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:48,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:48,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:58:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638237281] [2022-07-22 21:58:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:48,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:58:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:58:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:58:48,500 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:58:48,504 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) [2022-07-22 21:58:48,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:48,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:58:48,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:56,328 INFO L129 PetriNetUnfolder]: 13769/41000 cut-off events. [2022-07-22 21:58:56,329 INFO L130 PetriNetUnfolder]: For 238538/238538 co-relation queries the response was YES. [2022-07-22 21:58:56,847 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. [2022-07-22 21:58:57,005 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 380 selfloop transitions, 72 changer transitions 12/533 dead transitions. [2022-07-22 21:58:57,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 533 transitions, 5956 flow [2022-07-22 21:58:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:58:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:58:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1580 transitions. [2022-07-22 21:58:57,010 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7155797101449275 [2022-07-22 21:58:57,010 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1580 transitions. [2022-07-22 21:58:57,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1580 transitions. [2022-07-22 21:58:57,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:57,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1580 transitions. [2022-07-22 21:58:57,015 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) [2022-07-22 21:58:57,019 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) [2022-07-22 21:58:57,020 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) [2022-07-22 21:58:57,020 INFO L186 Difference]: Start difference. First operand has 234 places, 243 transitions, 2204 flow. Second operand 16 states and 1580 transitions. [2022-07-22 21:58:57,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 533 transitions, 5956 flow [2022-07-22 21:58:58,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 533 transitions, 5681 flow, removed 133 selfloop flow, removed 5 redundant places. [2022-07-22 21:58:58,872 INFO L242 Difference]: Finished difference. Result has 254 places, 280 transitions, 2962 flow [2022-07-22 21:58:58,873 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} [2022-07-22 21:58:58,873 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 122 predicate places. [2022-07-22 21:58:58,873 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 280 transitions, 2962 flow [2022-07-22 21:58:58,874 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) [2022-07-22 21:58:58,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:58,874 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] [2022-07-22 21:58:58,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:58:58,875 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)] === [2022-07-22 21:58:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash -859018579, now seen corresponding path program 11 times [2022-07-22 21:58:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:58,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213212554] [2022-07-22 21:58:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:59,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:59,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213212554] [2022-07-22 21:58:59,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213212554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:59,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:59,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:58:59,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059761426] [2022-07-22 21:58:59,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:59,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:58:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:59,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:58:59,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:58:59,715 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:58:59,716 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) [2022-07-22 21:58:59,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:59,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:58:59,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:08,983 INFO L129 PetriNetUnfolder]: 14580/45845 cut-off events. [2022-07-22 21:59:08,983 INFO L130 PetriNetUnfolder]: For 341761/341761 co-relation queries the response was YES. [2022-07-22 21:59:09,817 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. [2022-07-22 21:59:09,989 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 560 selfloop transitions, 124 changer transitions 11/764 dead transitions. [2022-07-22 21:59:09,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 764 transitions, 10991 flow [2022-07-22 21:59:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:59:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:59:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1567 transitions. [2022-07-22 21:59:09,993 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7096920289855072 [2022-07-22 21:59:09,993 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1567 transitions. [2022-07-22 21:59:09,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1567 transitions. [2022-07-22 21:59:09,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:09,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1567 transitions. [2022-07-22 21:59:09,997 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) [2022-07-22 21:59:10,000 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) [2022-07-22 21:59:10,001 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) [2022-07-22 21:59:10,001 INFO L186 Difference]: Start difference. First operand has 254 places, 280 transitions, 2962 flow. Second operand 16 states and 1567 transitions. [2022-07-22 21:59:10,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 764 transitions, 10991 flow [2022-07-22 21:59:13,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 764 transitions, 10413 flow, removed 234 selfloop flow, removed 6 redundant places. [2022-07-22 21:59:13,439 INFO L242 Difference]: Finished difference. Result has 273 places, 364 transitions, 4693 flow [2022-07-22 21:59:13,439 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} [2022-07-22 21:59:13,440 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 141 predicate places. [2022-07-22 21:59:13,440 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 364 transitions, 4693 flow [2022-07-22 21:59:13,441 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) [2022-07-22 21:59:13,441 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:13,441 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] [2022-07-22 21:59:13,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:59:13,442 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)] === [2022-07-22 21:59:13,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:13,442 INFO L85 PathProgramCache]: Analyzing trace with hash -980182085, now seen corresponding path program 12 times [2022-07-22 21:59:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:13,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539936777] [2022-07-22 21:59:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:13,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:14,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:14,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539936777] [2022-07-22 21:59:14,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539936777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:14,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:14,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:59:14,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941509731] [2022-07-22 21:59:14,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:14,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:59:14,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:59:14,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:59:14,245 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-22 21:59:14,247 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) [2022-07-22 21:59:14,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:14,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-22 21:59:14,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand