./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i --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/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:22:05,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:22:05,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:22:05,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:22:05,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:22:05,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:22:05,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:22:05,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:22:05,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:22:05,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:22:05,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:22:05,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:22:05,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:22:05,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:22:05,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:22:05,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:22:05,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:22:05,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:22:05,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:22:05,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:22:05,398 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:22:05,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:22:05,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:22:05,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:22:05,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:22:05,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:22:05,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:22:05,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:22:05,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:22:05,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:22:05,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:22:05,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:22:05,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:22:05,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:22:05,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:22:05,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:22:05,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:22:05,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:22:05,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:22:05,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:22:05,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:22:05,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:22:05,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:22:05,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:22:05,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:22:05,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:22:05,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:22:05,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:22:05,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:22:05,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:22:05,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:22:05,448 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:22:05,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:22:05,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:22:05,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:22:05,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:22:05,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:22:05,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:22:05,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:22:05,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:22:05,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:22:05,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:22:05,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:22:05,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:22:05,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:22:05,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:22:05,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:22:05,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:22:05,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:22:05,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:22:05,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:22:05,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:22:05,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:22:05,453 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:22:05,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:22:05,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:22:05,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 [2022-07-22 21:22:05,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:22:05,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:22:05,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:22:05,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:22:05,668 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:22:05,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:22:05,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c1b2018/6a7ac8d6152b41ebab8e884dbaf86988/FLAG573edc5ac [2022-07-22 21:22:06,113 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:22:06,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:22:06,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c1b2018/6a7ac8d6152b41ebab8e884dbaf86988/FLAG573edc5ac [2022-07-22 21:22:06,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c1b2018/6a7ac8d6152b41ebab8e884dbaf86988 [2022-07-22 21:22:06,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:22:06,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:22:06,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:22:06,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:22:06,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:22:06,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:22:06" (1/1) ... [2022-07-22 21:22:06,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692543d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:06, skipping insertion in model container [2022-07-22 21:22:06,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:22:06" (1/1) ... [2022-07-22 21:22:06,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:22:06,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:22:06,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:22:06,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:22:06,929 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:22:06,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:22:06,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:22:07,020 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:22:07,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07 WrapperNode [2022-07-22 21:22:07,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:22:07,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:22:07,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:22:07,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:22:07,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,087 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2022-07-22 21:22:07,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:22:07,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:22:07,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:22:07,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:22:07,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:22:07,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:22:07,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:22:07,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:22:07,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (1/1) ... [2022-07-22 21:22:07,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:22:07,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:22:07,158 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 21:22:07,160 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 21:22:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:22:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:22:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:22:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:22:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:22:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:22:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:22:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:22:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:22:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:22:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:22:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-22 21:22:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-22 21:22:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:22:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:22:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:22:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:22:07,196 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 21:22:07,361 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:22:07,363 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:22:07,743 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:22:07,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:22:07,934 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:22:07,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:22:07 BoogieIcfgContainer [2022-07-22 21:22:07,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:22:07,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:22:07,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:22:07,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:22:07,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:22:06" (1/3) ... [2022-07-22 21:22:07,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff3b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:22:07, skipping insertion in model container [2022-07-22 21:22:07,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:07" (2/3) ... [2022-07-22 21:22:07,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff3b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:22:07, skipping insertion in model container [2022-07-22 21:22:07,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:22:07" (3/3) ... [2022-07-22 21:22:07,942 INFO L111 eAbstractionObserver]: Analyzing ICFG mix023_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:22:07,946 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:22:07,952 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:22:07,953 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:22:07,953 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:22:08,012 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:22:08,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-07-22 21:22:08,100 INFO L129 PetriNetUnfolder]: 2/135 cut-off events. [2022-07-22 21:22:08,101 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:22:08,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-22 21:22:08,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-07-22 21:22:08,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-07-22 21:22:08,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:22:08,121 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@7c07963e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3271564e [2022-07-22 21:22:08,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:22:08,128 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2022-07-22 21:22:08,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:22:08,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:08,129 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] [2022-07-22 21:22:08,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:08,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1261973162, now seen corresponding path program 1 times [2022-07-22 21:22:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:08,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204916319] [2022-07-22 21:22:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:08,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:08,368 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 21:22:08,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:08,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204916319] [2022-07-22 21:22:08,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204916319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:08,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:08,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:22:08,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643954881] [2022-07-22 21:22:08,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:08,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:22:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:22:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:22:08,396 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 139 [2022-07-22 21:22:08,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 21:22:08,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:08,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 139 [2022-07-22 21:22:08,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:08,564 INFO L129 PetriNetUnfolder]: 162/623 cut-off events. [2022-07-22 21:22:08,565 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-22 21:22:08,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 623 events. 162/623 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3460 event pairs, 132 based on Foata normal form. 46/631 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-07-22 21:22:08,575 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 18 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-07-22 21:22:08,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 339 flow [2022-07-22 21:22:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:22:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:22:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-07-22 21:22:08,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9448441247002398 [2022-07-22 21:22:08,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-07-22 21:22:08,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-07-22 21:22:08,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:08,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-07-22 21:22:08,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 21:22:08,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 21:22:08,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 21:22:08,610 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 282 flow. Second operand 3 states and 394 transitions. [2022-07-22 21:22:08,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 339 flow [2022-07-22 21:22:08,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:22:08,619 INFO L242 Difference]: Finished difference. Result has 142 places, 131 transitions, 274 flow [2022-07-22 21:22:08,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, 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=274, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2022-07-22 21:22:08,625 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -4 predicate places. [2022-07-22 21:22:08,626 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 274 flow [2022-07-22 21:22:08,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 21:22:08,626 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:08,627 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] [2022-07-22 21:22:08,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:22:08,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:08,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1699652514, now seen corresponding path program 1 times [2022-07-22 21:22:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:08,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543506156] [2022-07-22 21:22:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:08,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:08,945 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 21:22:08,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:08,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543506156] [2022-07-22 21:22:08,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543506156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:08,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:08,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:22:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969312450] [2022-07-22 21:22:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:08,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:22:08,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:22:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:22:08,953 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-22 21:22:08,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 21:22:08,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:08,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-22 21:22:08,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:13,773 INFO L129 PetriNetUnfolder]: 19707/42016 cut-off events. [2022-07-22 21:22:13,774 INFO L130 PetriNetUnfolder]: For 1610/1610 co-relation queries the response was YES. [2022-07-22 21:22:13,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70690 conditions, 42016 events. 19707/42016 cut-off events. For 1610/1610 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 452738 event pairs, 4318 based on Foata normal form. 0/41093 useless extension candidates. Maximal degree in co-relation 70628. Up to 10076 conditions per place. [2022-07-22 21:22:14,032 INFO L132 encePairwiseOnDemand]: 122/139 looper letters, 37 selfloop transitions, 13 changer transitions 102/239 dead transitions. [2022-07-22 21:22:14,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 239 transitions, 786 flow [2022-07-22 21:22:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:22:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:22:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1077 transitions. [2022-07-22 21:22:14,036 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8609112709832134 [2022-07-22 21:22:14,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1077 transitions. [2022-07-22 21:22:14,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1077 transitions. [2022-07-22 21:22:14,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:14,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1077 transitions. [2022-07-22 21:22:14,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states 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 21:22:14,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 21:22:14,041 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 21:22:14,041 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 9 states and 1077 transitions. [2022-07-22 21:22:14,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 239 transitions, 786 flow [2022-07-22 21:22:14,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 239 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:22:14,045 INFO L242 Difference]: Finished difference. Result has 156 places, 125 transitions, 388 flow [2022-07-22 21:22:14,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=388, PETRI_PLACES=156, PETRI_TRANSITIONS=125} [2022-07-22 21:22:14,046 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 10 predicate places. [2022-07-22 21:22:14,046 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 125 transitions, 388 flow [2022-07-22 21:22:14,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 21:22:14,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:14,047 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] [2022-07-22 21:22:14,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:22:14,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:14,048 INFO L85 PathProgramCache]: Analyzing trace with hash -699640547, now seen corresponding path program 1 times [2022-07-22 21:22:14,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:14,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464870355] [2022-07-22 21:22:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:14,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:14,188 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 21:22:14,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:14,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464870355] [2022-07-22 21:22:14,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464870355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:14,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:14,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:22:14,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523875023] [2022-07-22 21:22:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:14,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:22:14,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:22:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:22:14,193 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-22 21:22:14,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 125 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 21:22:14,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:14,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-22 21:22:14,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:17,076 INFO L129 PetriNetUnfolder]: 13238/22639 cut-off events. [2022-07-22 21:22:17,076 INFO L130 PetriNetUnfolder]: For 37987/38059 co-relation queries the response was YES. [2022-07-22 21:22:17,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68802 conditions, 22639 events. 13238/22639 cut-off events. For 37987/38059 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 183609 event pairs, 2330 based on Foata normal form. 532/22672 useless extension candidates. Maximal degree in co-relation 68724. Up to 5647 conditions per place. [2022-07-22 21:22:17,250 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 58 selfloop transitions, 9 changer transitions 130/284 dead transitions. [2022-07-22 21:22:17,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 284 transitions, 1674 flow [2022-07-22 21:22:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:22:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:22:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1524 transitions. [2022-07-22 21:22:17,254 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8433868289983398 [2022-07-22 21:22:17,254 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1524 transitions. [2022-07-22 21:22:17,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1524 transitions. [2022-07-22 21:22:17,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:17,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1524 transitions. [2022-07-22 21:22:17,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 21:22:17,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:22:17,262 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:22:17,262 INFO L186 Difference]: Start difference. First operand has 156 places, 125 transitions, 388 flow. Second operand 13 states and 1524 transitions. [2022-07-22 21:22:17,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 284 transitions, 1674 flow [2022-07-22 21:22:17,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 284 transitions, 1560 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:22:17,324 INFO L242 Difference]: Finished difference. Result has 158 places, 130 transitions, 478 flow [2022-07-22 21:22:17,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=478, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2022-07-22 21:22:17,326 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-07-22 21:22:17,327 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 478 flow [2022-07-22 21:22:17,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 21:22:17,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:17,328 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] [2022-07-22 21:22:17,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:22:17,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1311624956, now seen corresponding path program 1 times [2022-07-22 21:22:17,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:17,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070202515] [2022-07-22 21:22:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:17,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:17,515 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 21:22:17,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:17,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070202515] [2022-07-22 21:22:17,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070202515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:17,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:17,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:22:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170408196] [2022-07-22 21:22:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:22:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:17,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:22:17,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:22:17,522 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-22 21:22:17,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 21:22:17,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:17,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-22 21:22:17,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:19,811 INFO L129 PetriNetUnfolder]: 8972/16036 cut-off events. [2022-07-22 21:22:19,811 INFO L130 PetriNetUnfolder]: For 46172/46175 co-relation queries the response was YES. [2022-07-22 21:22:19,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53390 conditions, 16036 events. 8972/16036 cut-off events. For 46172/46175 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 130616 event pairs, 1200 based on Foata normal form. 330/16130 useless extension candidates. Maximal degree in co-relation 53304. Up to 3520 conditions per place. [2022-07-22 21:22:19,924 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 55 selfloop transitions, 15 changer transitions 106/263 dead transitions. [2022-07-22 21:22:19,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 263 transitions, 1658 flow [2022-07-22 21:22:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:22:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:22:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1502 transitions. [2022-07-22 21:22:19,931 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8312119535141118 [2022-07-22 21:22:19,931 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1502 transitions. [2022-07-22 21:22:19,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1502 transitions. [2022-07-22 21:22:19,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:19,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1502 transitions. [2022-07-22 21:22:19,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.53846153846153) internal successors, (1502), 13 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states 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 21:22:19,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:22:19,940 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:22:19,940 INFO L186 Difference]: Start difference. First operand has 158 places, 130 transitions, 478 flow. Second operand 13 states and 1502 transitions. [2022-07-22 21:22:19,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 263 transitions, 1658 flow [2022-07-22 21:22:20,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 263 transitions, 1577 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-07-22 21:22:20,152 INFO L242 Difference]: Finished difference. Result has 169 places, 137 transitions, 624 flow [2022-07-22 21:22:20,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=624, PETRI_PLACES=169, PETRI_TRANSITIONS=137} [2022-07-22 21:22:20,153 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 23 predicate places. [2022-07-22 21:22:20,153 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 137 transitions, 624 flow [2022-07-22 21:22:20,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 21:22:20,154 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:20,154 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] [2022-07-22 21:22:20,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:22:20,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1348306673, now seen corresponding path program 1 times [2022-07-22 21:22:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:20,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349383897] [2022-07-22 21:22:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:20,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:20,226 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 21:22:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349383897] [2022-07-22 21:22:20,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349383897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:20,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:20,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:22:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368217196] [2022-07-22 21:22:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:20,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:22:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:22:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:22:20,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:22:20,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 137 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 21:22:20,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:20,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:22:20,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:25,012 INFO L129 PetriNetUnfolder]: 21401/37736 cut-off events. [2022-07-22 21:22:25,012 INFO L130 PetriNetUnfolder]: For 54787/72336 co-relation queries the response was YES. [2022-07-22 21:22:25,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91890 conditions, 37736 events. 21401/37736 cut-off events. For 54787/72336 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 353047 event pairs, 1502 based on Foata normal form. 371/35878 useless extension candidates. Maximal degree in co-relation 91795. Up to 11388 conditions per place. [2022-07-22 21:22:25,402 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 101 selfloop transitions, 20 changer transitions 0/233 dead transitions. [2022-07-22 21:22:25,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 233 transitions, 1288 flow [2022-07-22 21:22:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:22:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:22:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2022-07-22 21:22:25,405 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827338129496403 [2022-07-22 21:22:25,406 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2022-07-22 21:22:25,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2022-07-22 21:22:25,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:25,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2022-07-22 21:22:25,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states 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 21:22:25,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 21:22:25,413 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 21:22:25,413 INFO L186 Difference]: Start difference. First operand has 169 places, 137 transitions, 624 flow. Second operand 10 states and 1227 transitions. [2022-07-22 21:22:25,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 233 transitions, 1288 flow [2022-07-22 21:22:25,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 233 transitions, 1186 flow, removed 49 selfloop flow, removed 10 redundant places. [2022-07-22 21:22:25,523 INFO L242 Difference]: Finished difference. Result has 165 places, 155 transitions, 707 flow [2022-07-22 21:22:25,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=707, PETRI_PLACES=165, PETRI_TRANSITIONS=155} [2022-07-22 21:22:25,524 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 19 predicate places. [2022-07-22 21:22:25,524 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 155 transitions, 707 flow [2022-07-22 21:22:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 21:22:25,525 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:25,525 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] [2022-07-22 21:22:25,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:22:25,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash -561857278, now seen corresponding path program 1 times [2022-07-22 21:22:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:25,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949630214] [2022-07-22 21:22:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:25,613 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 21:22:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:25,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949630214] [2022-07-22 21:22:25,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949630214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:25,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:25,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:22:25,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856370503] [2022-07-22 21:22:25,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:25,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:22:25,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:22:25,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:22:25,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:22:25,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 155 transitions, 707 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 21:22:25,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:25,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:22:25,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:30,749 INFO L129 PetriNetUnfolder]: 20000/36860 cut-off events. [2022-07-22 21:22:30,749 INFO L130 PetriNetUnfolder]: For 68385/87163 co-relation queries the response was YES. [2022-07-22 21:22:31,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113786 conditions, 36860 events. 20000/36860 cut-off events. For 68385/87163 co-relation queries the response was YES. Maximal size of possible extension queue 2543. Compared 368102 event pairs, 1100 based on Foata normal form. 880/36146 useless extension candidates. Maximal degree in co-relation 113692. Up to 7040 conditions per place. [2022-07-22 21:22:31,196 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 132 selfloop transitions, 38 changer transitions 0/282 dead transitions. [2022-07-22 21:22:31,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 282 transitions, 1767 flow [2022-07-22 21:22:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:22:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:22:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1600 transitions. [2022-07-22 21:22:31,200 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854454897620365 [2022-07-22 21:22:31,200 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1600 transitions. [2022-07-22 21:22:31,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1600 transitions. [2022-07-22 21:22:31,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:31,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1600 transitions. [2022-07-22 21:22:31,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.07692307692308) internal successors, (1600), 13 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states 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 21:22:31,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:22:31,207 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:22:31,207 INFO L186 Difference]: Start difference. First operand has 165 places, 155 transitions, 707 flow. Second operand 13 states and 1600 transitions. [2022-07-22 21:22:31,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 282 transitions, 1767 flow [2022-07-22 21:22:32,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 282 transitions, 1747 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-07-22 21:22:32,016 INFO L242 Difference]: Finished difference. Result has 176 places, 175 transitions, 980 flow [2022-07-22 21:22:32,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=980, PETRI_PLACES=176, PETRI_TRANSITIONS=175} [2022-07-22 21:22:32,017 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 30 predicate places. [2022-07-22 21:22:32,017 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 175 transitions, 980 flow [2022-07-22 21:22:32,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 21:22:32,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:32,018 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] [2022-07-22 21:22:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:22:32,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1184555868, now seen corresponding path program 1 times [2022-07-22 21:22:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:32,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221849643] [2022-07-22 21:22:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:22:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:32,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221849643] [2022-07-22 21:22:32,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221849643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:32,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:32,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:22:32,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904962953] [2022-07-22 21:22:32,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:32,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:22:32,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:32,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:22:32,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:22:32,123 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:22:32,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 175 transitions, 980 flow. Second operand has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 21:22:32,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:32,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:22:32,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:37,300 INFO L129 PetriNetUnfolder]: 19424/35999 cut-off events. [2022-07-22 21:22:37,301 INFO L130 PetriNetUnfolder]: For 118855/137425 co-relation queries the response was YES. [2022-07-22 21:22:37,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133008 conditions, 35999 events. 19424/35999 cut-off events. For 118855/137425 co-relation queries the response was YES. Maximal size of possible extension queue 2541. Compared 363802 event pairs, 1040 based on Foata normal form. 635/35061 useless extension candidates. Maximal degree in co-relation 132912. Up to 6854 conditions per place. [2022-07-22 21:22:37,687 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 128 selfloop transitions, 58 changer transitions 30/328 dead transitions. [2022-07-22 21:22:37,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 328 transitions, 2438 flow [2022-07-22 21:22:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:22:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:22:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1972 transitions. [2022-07-22 21:22:37,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8866906474820144 [2022-07-22 21:22:37,691 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1972 transitions. [2022-07-22 21:22:37,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1972 transitions. [2022-07-22 21:22:37,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:37,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1972 transitions. [2022-07-22 21:22:37,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 123.25) internal successors, (1972), 16 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states 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 21:22:37,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states 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 21:22:37,698 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states 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 21:22:37,698 INFO L186 Difference]: Start difference. First operand has 176 places, 175 transitions, 980 flow. Second operand 16 states and 1972 transitions. [2022-07-22 21:22:37,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 328 transitions, 2438 flow [2022-07-22 21:22:44,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 328 transitions, 2329 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-07-22 21:22:44,392 INFO L242 Difference]: Finished difference. Result has 191 places, 201 transitions, 1340 flow [2022-07-22 21:22:44,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1340, PETRI_PLACES=191, PETRI_TRANSITIONS=201} [2022-07-22 21:22:44,393 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 45 predicate places. [2022-07-22 21:22:44,393 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 201 transitions, 1340 flow [2022-07-22 21:22:44,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 21:22:44,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:44,393 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] [2022-07-22 21:22:44,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:22:44,394 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash -928883341, now seen corresponding path program 1 times [2022-07-22 21:22:44,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:44,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332960353] [2022-07-22 21:22:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:44,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:44,499 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 21:22:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:44,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332960353] [2022-07-22 21:22:44,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332960353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:44,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:44,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:22:44,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649556065] [2022-07-22 21:22:44,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:44,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:22:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:22:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:22:44,502 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:22:44,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 201 transitions, 1340 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 21:22:44,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:44,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:22:44,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:49,550 INFO L129 PetriNetUnfolder]: 19344/35467 cut-off events. [2022-07-22 21:22:49,550 INFO L130 PetriNetUnfolder]: For 120186/137290 co-relation queries the response was YES. [2022-07-22 21:22:49,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131489 conditions, 35467 events. 19344/35467 cut-off events. For 120186/137290 co-relation queries the response was YES. Maximal size of possible extension queue 2484. Compared 353974 event pairs, 1201 based on Foata normal form. 402/34340 useless extension candidates. Maximal degree in co-relation 131388. Up to 4610 conditions per place. [2022-07-22 21:22:49,981 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 111 selfloop transitions, 63 changer transitions 41/327 dead transitions. [2022-07-22 21:22:49,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 327 transitions, 2537 flow [2022-07-22 21:22:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:22:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:22:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2293 transitions. [2022-07-22 21:22:49,985 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8682317304051496 [2022-07-22 21:22:49,985 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2293 transitions. [2022-07-22 21:22:49,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2293 transitions. [2022-07-22 21:22:49,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:49,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2293 transitions. [2022-07-22 21:22:49,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 120.6842105263158) internal successors, (2293), 19 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states 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 21:22:49,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 139.0) internal successors, (2780), 20 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states 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 21:22:49,993 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 139.0) internal successors, (2780), 20 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states 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 21:22:49,993 INFO L186 Difference]: Start difference. First operand has 191 places, 201 transitions, 1340 flow. Second operand 19 states and 2293 transitions. [2022-07-22 21:22:49,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 327 transitions, 2537 flow [2022-07-22 21:22:57,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 327 transitions, 2122 flow, removed 161 selfloop flow, removed 16 redundant places. [2022-07-22 21:22:57,242 INFO L242 Difference]: Finished difference. Result has 200 places, 200 transitions, 1168 flow [2022-07-22 21:22:57,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1168, PETRI_PLACES=200, PETRI_TRANSITIONS=200} [2022-07-22 21:22:57,243 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 54 predicate places. [2022-07-22 21:22:57,243 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 200 transitions, 1168 flow [2022-07-22 21:22:57,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 21:22:57,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:57,244 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:22:57,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:22:57,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:57,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash 857185854, now seen corresponding path program 1 times [2022-07-22 21:22:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:57,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052182878] [2022-07-22 21:22:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:57,419 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 21:22:57,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:57,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052182878] [2022-07-22 21:22:57,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052182878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:57,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:57,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:22:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821389294] [2022-07-22 21:22:57,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:22:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:22:57,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:22:57,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 139 [2022-07-22 21:22:57,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 200 transitions, 1168 flow. Second operand has 10 states, 10 states have (on average 103.4) internal successors, (1034), 10 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 21:22:57,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:57,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 139 [2022-07-22 21:22:57,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:01,414 INFO L129 PetriNetUnfolder]: 10763/34174 cut-off events. [2022-07-22 21:23:01,414 INFO L130 PetriNetUnfolder]: For 77136/80227 co-relation queries the response was YES. [2022-07-22 21:23:01,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111542 conditions, 34174 events. 10763/34174 cut-off events. For 77136/80227 co-relation queries the response was YES. Maximal size of possible extension queue 4113. Compared 514765 event pairs, 239 based on Foata normal form. 19/31989 useless extension candidates. Maximal degree in co-relation 111434. Up to 3223 conditions per place. [2022-07-22 21:23:01,960 INFO L132 encePairwiseOnDemand]: 115/139 looper letters, 111 selfloop transitions, 100 changer transitions 8/365 dead transitions. [2022-07-22 21:23:01,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 365 transitions, 2700 flow [2022-07-22 21:23:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:23:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:23:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2022-07-22 21:23:01,964 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8085224128389596 [2022-07-22 21:23:01,964 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2022-07-22 21:23:01,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2022-07-22 21:23:01,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:01,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2022-07-22 21:23:01,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.38461538461539) internal successors, (1461), 13 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states 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 21:23:01,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:23:01,970 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:23:01,970 INFO L186 Difference]: Start difference. First operand has 200 places, 200 transitions, 1168 flow. Second operand 13 states and 1461 transitions. [2022-07-22 21:23:01,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 365 transitions, 2700 flow [2022-07-22 21:23:08,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 365 transitions, 2398 flow, removed 103 selfloop flow, removed 17 redundant places. [2022-07-22 21:23:08,922 INFO L242 Difference]: Finished difference. Result has 203 places, 284 transitions, 2138 flow [2022-07-22 21:23:08,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2138, PETRI_PLACES=203, PETRI_TRANSITIONS=284} [2022-07-22 21:23:08,924 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 57 predicate places. [2022-07-22 21:23:08,924 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 284 transitions, 2138 flow [2022-07-22 21:23:08,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.4) internal successors, (1034), 10 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 21:23:08,925 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:08,925 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:23:08,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:23:08,925 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:23:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1040173294, now seen corresponding path program 2 times [2022-07-22 21:23:08,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405508736] [2022-07-22 21:23:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:08,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:09,167 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 21:23:09,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:09,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405508736] [2022-07-22 21:23:09,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405508736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:09,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:09,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:23:09,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19102290] [2022-07-22 21:23:09,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:09,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:23:09,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:23:09,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:23:09,169 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-22 21:23:09,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 284 transitions, 2138 flow. Second operand has 13 states, 13 states have (on average 108.15384615384616) internal successors, (1406), 13 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 21:23:09,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:09,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-22 21:23:09,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:09,994 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1129] L806-->L809: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0][220], [Black: 348#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), Black: 374#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= ~__unbuffered_cnt~0 3) (<= 0 ~main$tmp_guard0~0)), 42#L809true, Black: 342#true, 32#L796true, Black: 182#true, Black: 265#(and (= ~__unbuffered_cnt~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), 94#L766true, Black: 257#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), P0Thread1of1ForFork3InUse, Black: 269#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), Black: 254#true, Black: 332#(and (<= ~__unbuffered_cnt~0 2) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), P2Thread1of1ForFork2InUse, 185#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 312#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), P3Thread1of1ForFork0InUse, Black: 307#true, P1Thread1of1ForFork1InUse, 393#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), 261#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), Black: 400#(and (= (+ (- 1) ~a$w_buff0_used~0) 0) (= (+ (- 1) ~a$r_buff0_thd1~0) 0) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0)))), Black: 407#(and (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (not (= ~y~0 0))), Black: 390#(= ~a$w_buff0_used~0 0), Black: 398#(and (= ~a$w_buff0_used~0 0) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0)))), Black: 411#(and (<= 1 ~main$tmp_guard1~0) (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (not (= ~y~0 0))), Black: 389#(and (= (+ (- 1) ~a$w_buff0_used~0) 0) (= (+ (- 1) ~a$r_buff0_thd1~0) 0)), Black: 405#(and (= ~a$w_buff0_used~0 0) (not (= ~y~0 0))), Black: 387#true, Black: 413#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (not (= ~y~0 0))), Black: 409#(and (<= 1 ~main$tmp_guard1~0) (not (= ~__unbuffered_p1_EBX~0 0)) (= ~a$w_buff0_used~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (not (= ~y~0 0))), Black: 281#(and (<= ~main$tmp_guard0~0 0) (<= 0 ~main$tmp_guard0~0)), Black: 277#true, Black: 299#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), Black: 295#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= ~__unbuffered_cnt~0 1) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~main$tmp_guard0~0)), Black: 157#true, 221#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 218#true, 431#(and (= ~a$r_buff1_thd4~0 0) (= ~a$r_buff1_thd2~0 0) (= (+ (- 1) ~a$w_buff0_used~0) 0) (= (+ (- 1) ~a$r_buff0_thd1~0) 0) (= ~a$r_buff1_thd3~0 0) (= ~a$w_buff0_used~0 ~a$w_buff0~0) (= ~a$r_buff0_thd2~0 0) (= ~a$r_buff0_thd3~0 0) (= ~a$r_buff0_thd4~0 0)), 31#L876-3true, 11#L829true, Black: 372#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= ~main$tmp_guard0~0 0) (<= ~__unbuffered_cnt~0 3) (<= 0 ~main$tmp_guard0~0)), Black: 362#(and (<= ~main$tmp_guard0~0 0) (<= ~__unbuffered_cnt~0 3) (<= 0 ~main$tmp_guard0~0))]) [2022-07-22 21:23:09,994 INFO L384 tUnfolder$Statistics]: this new event has 83 ancestors and is cut-off event [2022-07-22 21:23:09,994 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-07-22 21:23:09,995 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-07-22 21:23:09,995 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-07-22 21:23:13,784 INFO L129 PetriNetUnfolder]: 12840/41456 cut-off events. [2022-07-22 21:23:13,785 INFO L130 PetriNetUnfolder]: For 72350/75699 co-relation queries the response was YES. [2022-07-22 21:23:14,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122261 conditions, 41456 events. 12840/41456 cut-off events. For 72350/75699 co-relation queries the response was YES. Maximal size of possible extension queue 5017. Compared 648088 event pairs, 312 based on Foata normal form. 160/38884 useless extension candidates. Maximal degree in co-relation 122220. Up to 4163 conditions per place. [2022-07-22 21:23:14,414 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 53 selfloop transitions, 17 changer transitions 9/311 dead transitions. [2022-07-22 21:23:14,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 311 transitions, 2484 flow [2022-07-22 21:23:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:23:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:23:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1323 transitions. [2022-07-22 21:23:14,416 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7931654676258992 [2022-07-22 21:23:14,416 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1323 transitions. [2022-07-22 21:23:14,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1323 transitions. [2022-07-22 21:23:14,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:14,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1323 transitions. [2022-07-22 21:23:14,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 110.25) internal successors, (1323), 12 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 21:23:14,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 21:23:14,421 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states 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 21:23:14,421 INFO L186 Difference]: Start difference. First operand has 203 places, 284 transitions, 2138 flow. Second operand 12 states and 1323 transitions. [2022-07-22 21:23:14,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 311 transitions, 2484 flow [2022-07-22 21:23:24,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 311 transitions, 2474 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-07-22 21:23:24,637 INFO L242 Difference]: Finished difference. Result has 213 places, 287 transitions, 2235 flow [2022-07-22 21:23:24,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2235, PETRI_PLACES=213, PETRI_TRANSITIONS=287} [2022-07-22 21:23:24,638 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 67 predicate places. [2022-07-22 21:23:24,638 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 287 transitions, 2235 flow [2022-07-22 21:23:24,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 108.15384615384616) internal successors, (1406), 13 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 21:23:24,638 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:24,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:23:24,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:23:24,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:23:24,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash -660980030, now seen corresponding path program 3 times [2022-07-22 21:23:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:24,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202699129] [2022-07-22 21:23:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:24,754 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 21:23:24,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:24,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202699129] [2022-07-22 21:23:24,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202699129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:24,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:24,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:23:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923391259] [2022-07-22 21:23:24,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:24,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:23:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:23:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:23:24,757 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 139 [2022-07-22 21:23:24,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 287 transitions, 2235 flow. Second operand has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 21:23:24,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:24,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 139 [2022-07-22 21:23:24,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand