./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/rfi002_tso.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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:42:59,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:42:59,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:42:59,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:42:59,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:42:59,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:42:59,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:42:59,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:42:59,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:42:59,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:42:59,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:42:59,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:42:59,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:42:59,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:42:59,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:42:59,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:42:59,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:42:59,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:42:59,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:42:59,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:42:59,490 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:42:59,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:42:59,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:42:59,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:42:59,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:42:59,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:42:59,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:42:59,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:42:59,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:42:59,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:42:59,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:42:59,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:42:59,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:42:59,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:42:59,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:42:59,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:42:59,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:42:59,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:42:59,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:42:59,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:42:59,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:42:59,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:42:59,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:42:59,547 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:42:59,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:42:59,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:42:59,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:42:59,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:42:59,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:42:59,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:42:59,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:42:59,550 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:42:59,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:42:59,552 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:42:59,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:42:59,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:42:59,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:42:59,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:42:59,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:42:59,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:42:59,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:42:59,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:42:59,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:42:59,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:42:59,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:42:59,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:42:59,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:42:59,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:42:59,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:42:59,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:42:59,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:42:59,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:42:59,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:42:59,561 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:42:59,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:42:59,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:42:59,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2022-07-21 08:42:59,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:42:59,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:42:59,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:42:59,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:42:59,883 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:42:59,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-21 08:42:59,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7017ff931/6657be23322c4af7b1c38ce78297c633/FLAG5186a2ec2 [2022-07-21 08:43:00,489 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:43:00,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-21 08:43:00,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7017ff931/6657be23322c4af7b1c38ce78297c633/FLAG5186a2ec2 [2022-07-21 08:43:00,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7017ff931/6657be23322c4af7b1c38ce78297c633 [2022-07-21 08:43:00,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:43:00,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:43:00,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:43:00,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:43:00,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:43:00,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:43:00" (1/1) ... [2022-07-21 08:43:00,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76abd67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:00, skipping insertion in model container [2022-07-21 08:43:00,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:43:00" (1/1) ... [2022-07-21 08:43:00,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:43:00,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:43:01,093 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/rfi002_tso.i[987,1000] [2022-07-21 08:43:01,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:43:01,342 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:43:01,353 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/rfi002_tso.i[987,1000] [2022-07-21 08:43:01,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:43:01,479 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:43:01,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01 WrapperNode [2022-07-21 08:43:01,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:43:01,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:43:01,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:43:01,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:43:01,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,570 INFO L137 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 551 [2022-07-21 08:43:01,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:43:01,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:43:01,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:43:01,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:43:01,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:43:01,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:43:01,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:43:01,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:43:01,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:43:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:43:01,687 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) [2022-07-21 08:43:01,695 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 [2022-07-21 08:43:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:43:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:43:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:43:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:43:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:43:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:43:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:43:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:43:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:43:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:43:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:43:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:43:01,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:43:01,724 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:43:01,916 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:43:01,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:43:02,646 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:43:03,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:43:03,265 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:43:03,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:03 BoogieIcfgContainer [2022-07-21 08:43:03,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:43:03,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:43:03,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:43:03,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:43:03,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:43:00" (1/3) ... [2022-07-21 08:43:03,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3cbb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:43:03, skipping insertion in model container [2022-07-21 08:43:03,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (2/3) ... [2022-07-21 08:43:03,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3cbb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:43:03, skipping insertion in model container [2022-07-21 08:43:03,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:03" (3/3) ... [2022-07-21 08:43:03,274 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2022-07-21 08:43:03,279 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:43:03,287 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:43:03,288 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-21 08:43:03,288 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:43:03,380 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:43:03,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 114 transitions, 238 flow [2022-07-21 08:43:03,462 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2022-07-21 08:43:03,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:43:03,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-07-21 08:43:03,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 114 transitions, 238 flow [2022-07-21 08:43:03,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 112 transitions, 230 flow [2022-07-21 08:43:03,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:43:03,484 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@563f687, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c7a4072 [2022-07-21 08:43:03,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:43:03,496 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2022-07-21 08:43:03,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:43:03,497 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:03,498 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] [2022-07-21 08:43:03,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:03,503 INFO L85 PathProgramCache]: Analyzing trace with hash 391948507, now seen corresponding path program 1 times [2022-07-21 08:43:03,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:03,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571304774] [2022-07-21 08:43:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:03,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:03,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571304774] [2022-07-21 08:43:03,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571304774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:03,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:03,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:43:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324498387] [2022-07-21 08:43:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:03,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:43:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:03,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:43:03,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:43:03,904 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-21 08:43:03,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:03,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:03,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-21 08:43:03,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:04,195 INFO L129 PetriNetUnfolder]: 111/381 cut-off events. [2022-07-21 08:43:04,195 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-21 08:43:04,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 381 events. 111/381 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1603 event pairs, 9 based on Foata normal form. 20/358 useless extension candidates. Maximal degree in co-relation 532. Up to 175 conditions per place. [2022-07-21 08:43:04,203 INFO L132 encePairwiseOnDemand]: 109/114 looper letters, 17 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-07-21 08:43:04,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 270 flow [2022-07-21 08:43:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:43:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:43:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-07-21 08:43:04,218 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9122807017543859 [2022-07-21 08:43:04,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-07-21 08:43:04,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-07-21 08:43:04,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:04,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-07-21 08:43:04,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,236 INFO L186 Difference]: Start difference. First operand has 117 places, 112 transitions, 230 flow. Second operand 3 states and 312 transitions. [2022-07-21 08:43:04,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 270 flow [2022-07-21 08:43:04,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:43:04,248 INFO L242 Difference]: Finished difference. Result has 115 places, 108 transitions, 224 flow [2022-07-21 08:43:04,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-07-21 08:43:04,255 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2022-07-21 08:43:04,256 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 224 flow [2022-07-21 08:43:04,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:04,257 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] [2022-07-21 08:43:04,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:43:04,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:04,259 INFO L85 PathProgramCache]: Analyzing trace with hash -734495959, now seen corresponding path program 1 times [2022-07-21 08:43:04,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:04,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811625888] [2022-07-21 08:43:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:04,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:04,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811625888] [2022-07-21 08:43:04,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811625888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:04,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:04,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:43:04,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531732893] [2022-07-21 08:43:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:04,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:43:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:43:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:43:04,350 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-21 08:43:04,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:04,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-21 08:43:04,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:04,524 INFO L129 PetriNetUnfolder]: 94/419 cut-off events. [2022-07-21 08:43:04,525 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-21 08:43:04,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 419 events. 94/419 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2013 event pairs, 26 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 553. Up to 117 conditions per place. [2022-07-21 08:43:04,528 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 16 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-07-21 08:43:04,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 268 flow [2022-07-21 08:43:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:43:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:43:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-07-21 08:43:04,532 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2022-07-21 08:43:04,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-07-21 08:43:04,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-07-21 08:43:04,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:04,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-07-21 08:43:04,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,536 INFO L186 Difference]: Start difference. First operand has 115 places, 108 transitions, 224 flow. Second operand 3 states and 307 transitions. [2022-07-21 08:43:04,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 268 flow [2022-07-21 08:43:04,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:43:04,539 INFO L242 Difference]: Finished difference. Result has 114 places, 107 transitions, 222 flow [2022-07-21 08:43:04,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2022-07-21 08:43:04,540 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-07-21 08:43:04,541 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 222 flow [2022-07-21 08:43:04,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,541 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:04,542 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:04,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:43:04,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash 26389779, now seen corresponding path program 1 times [2022-07-21 08:43:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:04,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334885172] [2022-07-21 08:43:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:04,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:04,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334885172] [2022-07-21 08:43:04,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334885172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:04,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:04,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:43:04,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239069686] [2022-07-21 08:43:04,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:04,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:43:04,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:04,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:43:04,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:43:04,787 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-21 08:43:04,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:04,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-21 08:43:04,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:05,350 INFO L129 PetriNetUnfolder]: 336/1001 cut-off events. [2022-07-21 08:43:05,350 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-21 08:43:05,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 1001 events. 336/1001 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6080 event pairs, 82 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1561. Up to 229 conditions per place. [2022-07-21 08:43:05,357 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 20 selfloop transitions, 2 changer transitions 52/153 dead transitions. [2022-07-21 08:43:05,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 450 flow [2022-07-21 08:43:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:43:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:43:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 877 transitions. [2022-07-21 08:43:05,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.854775828460039 [2022-07-21 08:43:05,362 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 877 transitions. [2022-07-21 08:43:05,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 877 transitions. [2022-07-21 08:43:05,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:05,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 877 transitions. [2022-07-21 08:43:05,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,369 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,369 INFO L186 Difference]: Start difference. First operand has 114 places, 107 transitions, 222 flow. Second operand 9 states and 877 transitions. [2022-07-21 08:43:05,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 153 transitions, 450 flow [2022-07-21 08:43:05,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:43:05,376 INFO L242 Difference]: Finished difference. Result has 127 places, 97 transitions, 218 flow [2022-07-21 08:43:05,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2022-07-21 08:43:05,379 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 10 predicate places. [2022-07-21 08:43:05,379 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 218 flow [2022-07-21 08:43:05,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,380 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:05,380 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] [2022-07-21 08:43:05,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:43:05,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash -705378320, now seen corresponding path program 1 times [2022-07-21 08:43:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:05,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385279647] [2022-07-21 08:43:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:05,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:05,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385279647] [2022-07-21 08:43:05,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385279647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:05,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:05,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:43:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909674909] [2022-07-21 08:43:05,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:05,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:43:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:43:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:43:05,691 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-21 08:43:05,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:05,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-21 08:43:05,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:06,146 INFO L129 PetriNetUnfolder]: 247/608 cut-off events. [2022-07-21 08:43:06,146 INFO L130 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-07-21 08:43:06,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 608 events. 247/608 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2647 event pairs, 154 based on Foata normal form. 15/590 useless extension candidates. Maximal degree in co-relation 1183. Up to 298 conditions per place. [2022-07-21 08:43:06,151 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 23 selfloop transitions, 5 changer transitions 31/135 dead transitions. [2022-07-21 08:43:06,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 135 transitions, 435 flow [2022-07-21 08:43:06,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:43:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:43:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1018 transitions. [2022-07-21 08:43:06,155 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8118022328548644 [2022-07-21 08:43:06,156 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1018 transitions. [2022-07-21 08:43:06,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1018 transitions. [2022-07-21 08:43:06,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:06,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1018 transitions. [2022-07-21 08:43:06,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.54545454545455) internal successors, (1018), 11 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,166 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,167 INFO L186 Difference]: Start difference. First operand has 127 places, 97 transitions, 218 flow. Second operand 11 states and 1018 transitions. [2022-07-21 08:43:06,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 135 transitions, 435 flow [2022-07-21 08:43:06,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 401 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:06,177 INFO L242 Difference]: Finished difference. Result has 120 places, 99 transitions, 249 flow [2022-07-21 08:43:06,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=249, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2022-07-21 08:43:06,179 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2022-07-21 08:43:06,179 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 249 flow [2022-07-21 08:43:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,185 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:06,185 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] [2022-07-21 08:43:06,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:43:06,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -459322686, now seen corresponding path program 1 times [2022-07-21 08:43:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007565007] [2022-07-21 08:43:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:06,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:06,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007565007] [2022-07-21 08:43:06,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007565007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:06,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:06,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:43:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213506785] [2022-07-21 08:43:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:06,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:43:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:43:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:43:06,400 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-21 08:43:06,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 99 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:06,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-21 08:43:06,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:06,759 INFO L129 PetriNetUnfolder]: 167/495 cut-off events. [2022-07-21 08:43:06,759 INFO L130 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-07-21 08:43:06,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 495 events. 167/495 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2196 event pairs, 39 based on Foata normal form. 14/485 useless extension candidates. Maximal degree in co-relation 1061. Up to 126 conditions per place. [2022-07-21 08:43:06,763 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 24 selfloop transitions, 2 changer transitions 28/134 dead transitions. [2022-07-21 08:43:06,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 134 transitions, 506 flow [2022-07-21 08:43:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:43:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:43:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 865 transitions. [2022-07-21 08:43:06,766 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8430799220272904 [2022-07-21 08:43:06,766 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 865 transitions. [2022-07-21 08:43:06,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 865 transitions. [2022-07-21 08:43:06,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:06,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 865 transitions. [2022-07-21 08:43:06,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.11111111111111) internal successors, (865), 9 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,771 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,771 INFO L186 Difference]: Start difference. First operand has 120 places, 99 transitions, 249 flow. Second operand 9 states and 865 transitions. [2022-07-21 08:43:06,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 134 transitions, 506 flow [2022-07-21 08:43:06,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 483 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-21 08:43:06,775 INFO L242 Difference]: Finished difference. Result has 123 places, 99 transitions, 254 flow [2022-07-21 08:43:06,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2022-07-21 08:43:06,776 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2022-07-21 08:43:06,777 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 254 flow [2022-07-21 08:43:06,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,777 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:06,777 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] [2022-07-21 08:43:06,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:43:06,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:06,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1724920748, now seen corresponding path program 1 times [2022-07-21 08:43:06,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:06,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498679720] [2022-07-21 08:43:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:06,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:07,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:07,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498679720] [2022-07-21 08:43:07,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498679720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:07,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:07,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 08:43:07,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005200504] [2022-07-21 08:43:07,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:07,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 08:43:07,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:07,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 08:43:07,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:43:07,408 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-21 08:43:07,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 99 transitions, 254 flow. Second operand has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:07,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-21 08:43:07,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:08,311 INFO L129 PetriNetUnfolder]: 403/885 cut-off events. [2022-07-21 08:43:08,312 INFO L130 PetriNetUnfolder]: For 869/869 co-relation queries the response was YES. [2022-07-21 08:43:08,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 885 events. 403/885 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4347 event pairs, 38 based on Foata normal form. 12/875 useless extension candidates. Maximal degree in co-relation 2147. Up to 296 conditions per place. [2022-07-21 08:43:08,318 INFO L132 encePairwiseOnDemand]: 95/114 looper letters, 60 selfloop transitions, 24 changer transitions 39/190 dead transitions. [2022-07-21 08:43:08,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 190 transitions, 853 flow [2022-07-21 08:43:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:43:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:43:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1605 transitions. [2022-07-21 08:43:08,322 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7409972299168975 [2022-07-21 08:43:08,323 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1605 transitions. [2022-07-21 08:43:08,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1605 transitions. [2022-07-21 08:43:08,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:08,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1605 transitions. [2022-07-21 08:43:08,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 84.47368421052632) internal successors, (1605), 19 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,331 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,331 INFO L186 Difference]: Start difference. First operand has 123 places, 99 transitions, 254 flow. Second operand 19 states and 1605 transitions. [2022-07-21 08:43:08,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 190 transitions, 853 flow [2022-07-21 08:43:08,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 795 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:08,338 INFO L242 Difference]: Finished difference. Result has 138 places, 117 transitions, 431 flow [2022-07-21 08:43:08,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=431, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2022-07-21 08:43:08,339 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 21 predicate places. [2022-07-21 08:43:08,339 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 431 flow [2022-07-21 08:43:08,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,340 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:08,340 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] [2022-07-21 08:43:08,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:43:08,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:08,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1152284406, now seen corresponding path program 2 times [2022-07-21 08:43:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:08,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960349328] [2022-07-21 08:43:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:08,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:08,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960349328] [2022-07-21 08:43:08,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960349328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:08,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:08,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:08,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574759531] [2022-07-21 08:43:08,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:08,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:08,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:08,703 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-21 08:43:08,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 431 flow. Second operand has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:08,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-21 08:43:08,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:09,441 INFO L129 PetriNetUnfolder]: 223/617 cut-off events. [2022-07-21 08:43:09,441 INFO L130 PetriNetUnfolder]: For 1660/2957 co-relation queries the response was YES. [2022-07-21 08:43:09,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 617 events. 223/617 cut-off events. For 1660/2957 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2809 event pairs, 55 based on Foata normal form. 28/596 useless extension candidates. Maximal degree in co-relation 1994. Up to 279 conditions per place. [2022-07-21 08:43:09,448 INFO L132 encePairwiseOnDemand]: 101/114 looper letters, 51 selfloop transitions, 21 changer transitions 15/163 dead transitions. [2022-07-21 08:43:09,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 163 transitions, 928 flow [2022-07-21 08:43:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:43:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:43:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1310 transitions. [2022-07-21 08:43:09,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-21 08:43:09,453 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1310 transitions. [2022-07-21 08:43:09,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1310 transitions. [2022-07-21 08:43:09,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:09,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1310 transitions. [2022-07-21 08:43:09,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 87.33333333333333) internal successors, (1310), 15 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,460 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,460 INFO L186 Difference]: Start difference. First operand has 138 places, 117 transitions, 431 flow. Second operand 15 states and 1310 transitions. [2022-07-21 08:43:09,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 163 transitions, 928 flow [2022-07-21 08:43:09,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 163 transitions, 866 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-07-21 08:43:09,471 INFO L242 Difference]: Finished difference. Result has 148 places, 130 transitions, 592 flow [2022-07-21 08:43:09,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=592, PETRI_PLACES=148, PETRI_TRANSITIONS=130} [2022-07-21 08:43:09,472 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-07-21 08:43:09,472 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 592 flow [2022-07-21 08:43:09,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,473 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:09,473 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] [2022-07-21 08:43:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:43:09,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 813395958, now seen corresponding path program 3 times [2022-07-21 08:43:09,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:09,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663883243] [2022-07-21 08:43:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:09,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:09,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:09,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663883243] [2022-07-21 08:43:09,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663883243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:09,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:09,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:09,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113412492] [2022-07-21 08:43:09,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:09,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:09,798 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-21 08:43:09,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 130 transitions, 592 flow. Second operand has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:09,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-21 08:43:09,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:10,510 INFO L129 PetriNetUnfolder]: 262/718 cut-off events. [2022-07-21 08:43:10,511 INFO L130 PetriNetUnfolder]: For 3742/5639 co-relation queries the response was YES. [2022-07-21 08:43:10,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 718 events. 262/718 cut-off events. For 3742/5639 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3532 event pairs, 66 based on Foata normal form. 28/686 useless extension candidates. Maximal degree in co-relation 2713. Up to 263 conditions per place. [2022-07-21 08:43:10,518 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 55 selfloop transitions, 24 changer transitions 18/173 dead transitions. [2022-07-21 08:43:10,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 173 transitions, 1164 flow [2022-07-21 08:43:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:43:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:43:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1226 transitions. [2022-07-21 08:43:10,522 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768170426065163 [2022-07-21 08:43:10,522 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1226 transitions. [2022-07-21 08:43:10,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1226 transitions. [2022-07-21 08:43:10,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:10,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1226 transitions. [2022-07-21 08:43:10,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.57142857142857) internal successors, (1226), 14 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,529 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,529 INFO L186 Difference]: Start difference. First operand has 148 places, 130 transitions, 592 flow. Second operand 14 states and 1226 transitions. [2022-07-21 08:43:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 173 transitions, 1164 flow [2022-07-21 08:43:10,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 173 transitions, 1101 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-07-21 08:43:10,542 INFO L242 Difference]: Finished difference. Result has 158 places, 134 transitions, 690 flow [2022-07-21 08:43:10,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=690, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2022-07-21 08:43:10,543 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 41 predicate places. [2022-07-21 08:43:10,543 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 690 flow [2022-07-21 08:43:10,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:10,544 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] [2022-07-21 08:43:10,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:43:10,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:10,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:10,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1874237520, now seen corresponding path program 4 times [2022-07-21 08:43:10,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:10,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041906513] [2022-07-21 08:43:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:11,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041906513] [2022-07-21 08:43:11,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041906513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:11,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:11,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 08:43:11,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772483716] [2022-07-21 08:43:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:11,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 08:43:11,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:11,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 08:43:11,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:43:11,072 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-21 08:43:11,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 690 flow. Second operand has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:11,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-21 08:43:11,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:12,309 INFO L129 PetriNetUnfolder]: 516/1154 cut-off events. [2022-07-21 08:43:12,309 INFO L130 PetriNetUnfolder]: For 7135/7703 co-relation queries the response was YES. [2022-07-21 08:43:12,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 1154 events. 516/1154 cut-off events. For 7135/7703 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6455 event pairs, 95 based on Foata normal form. 29/1160 useless extension candidates. Maximal degree in co-relation 4584. Up to 294 conditions per place. [2022-07-21 08:43:12,322 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 31 changer transitions 56/225 dead transitions. [2022-07-21 08:43:12,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 225 transitions, 1773 flow [2022-07-21 08:43:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:43:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:43:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2002 transitions. [2022-07-21 08:43:12,329 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7317251461988304 [2022-07-21 08:43:12,329 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2002 transitions. [2022-07-21 08:43:12,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2002 transitions. [2022-07-21 08:43:12,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:12,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2002 transitions. [2022-07-21 08:43:12,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 83.41666666666667) internal successors, (2002), 24 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,341 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,341 INFO L186 Difference]: Start difference. First operand has 158 places, 134 transitions, 690 flow. Second operand 24 states and 2002 transitions. [2022-07-21 08:43:12,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 225 transitions, 1773 flow [2022-07-21 08:43:12,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 225 transitions, 1490 flow, removed 116 selfloop flow, removed 17 redundant places. [2022-07-21 08:43:12,360 INFO L242 Difference]: Finished difference. Result has 175 places, 134 transitions, 716 flow [2022-07-21 08:43:12,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=716, PETRI_PLACES=175, PETRI_TRANSITIONS=134} [2022-07-21 08:43:12,361 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-21 08:43:12,361 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 134 transitions, 716 flow [2022-07-21 08:43:12,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,362 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:12,362 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] [2022-07-21 08:43:12,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:43:12,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2006059476, now seen corresponding path program 5 times [2022-07-21 08:43:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:12,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567798448] [2022-07-21 08:43:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:12,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:12,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567798448] [2022-07-21 08:43:12,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567798448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:12,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:12,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:43:12,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759367079] [2022-07-21 08:43:12,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:12,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:43:12,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:43:12,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:43:12,627 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-21 08:43:12,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 134 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:12,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-21 08:43:12,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:13,376 INFO L129 PetriNetUnfolder]: 274/747 cut-off events. [2022-07-21 08:43:13,376 INFO L130 PetriNetUnfolder]: For 4856/8175 co-relation queries the response was YES. [2022-07-21 08:43:13,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 747 events. 274/747 cut-off events. For 4856/8175 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3814 event pairs, 57 based on Foata normal form. 31/719 useless extension candidates. Maximal degree in co-relation 3026. Up to 333 conditions per place. [2022-07-21 08:43:13,386 INFO L132 encePairwiseOnDemand]: 100/114 looper letters, 48 selfloop transitions, 22 changer transitions 28/175 dead transitions. [2022-07-21 08:43:13,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 175 transitions, 1370 flow [2022-07-21 08:43:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:43:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:43:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1143 transitions. [2022-07-21 08:43:13,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.771255060728745 [2022-07-21 08:43:13,389 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1143 transitions. [2022-07-21 08:43:13,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1143 transitions. [2022-07-21 08:43:13,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:13,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1143 transitions. [2022-07-21 08:43:13,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.92307692307692) internal successors, (1143), 13 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,395 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,395 INFO L186 Difference]: Start difference. First operand has 175 places, 134 transitions, 716 flow. Second operand 13 states and 1143 transitions. [2022-07-21 08:43:13,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 175 transitions, 1370 flow [2022-07-21 08:43:13,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 175 transitions, 1191 flow, removed 76 selfloop flow, removed 20 redundant places. [2022-07-21 08:43:13,414 INFO L242 Difference]: Finished difference. Result has 159 places, 141 transitions, 818 flow [2022-07-21 08:43:13,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=818, PETRI_PLACES=159, PETRI_TRANSITIONS=141} [2022-07-21 08:43:13,415 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-21 08:43:13,415 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 141 transitions, 818 flow [2022-07-21 08:43:13,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,415 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:13,416 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] [2022-07-21 08:43:13,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:43:13,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash -177062592, now seen corresponding path program 1 times [2022-07-21 08:43:13,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:13,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579674630] [2022-07-21 08:43:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:13,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579674630] [2022-07-21 08:43:13,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579674630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:13,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:13,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:13,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513535598] [2022-07-21 08:43:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:13,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:13,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:13,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:13,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:13,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-21 08:43:13,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 141 transitions, 818 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:13,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-21 08:43:13,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:13,969 INFO L129 PetriNetUnfolder]: 266/764 cut-off events. [2022-07-21 08:43:13,969 INFO L130 PetriNetUnfolder]: For 4681/8134 co-relation queries the response was YES. [2022-07-21 08:43:13,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 764 events. 266/764 cut-off events. For 4681/8134 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4201 event pairs, 57 based on Foata normal form. 36/740 useless extension candidates. Maximal degree in co-relation 3375. Up to 342 conditions per place. [2022-07-21 08:43:13,978 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 12 changer transitions 26/165 dead transitions. [2022-07-21 08:43:13,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 165 transitions, 1228 flow [2022-07-21 08:43:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:43:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:43:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2022-07-21 08:43:13,980 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.818295739348371 [2022-07-21 08:43:13,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2022-07-21 08:43:13,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2022-07-21 08:43:13,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:13,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2022-07-21 08:43:13,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.28571428571429) internal successors, (653), 7 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,984 INFO L186 Difference]: Start difference. First operand has 159 places, 141 transitions, 818 flow. Second operand 7 states and 653 transitions. [2022-07-21 08:43:13,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 165 transitions, 1228 flow [2022-07-21 08:43:13,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 165 transitions, 1177 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:14,001 INFO L242 Difference]: Finished difference. Result has 156 places, 137 transitions, 784 flow [2022-07-21 08:43:14,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=156, PETRI_TRANSITIONS=137} [2022-07-21 08:43:14,002 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 39 predicate places. [2022-07-21 08:43:14,002 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 137 transitions, 784 flow [2022-07-21 08:43:14,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:14,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:14,002 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] [2022-07-21 08:43:14,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:43:14,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:14,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:14,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1211062210, now seen corresponding path program 2 times [2022-07-21 08:43:14,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:14,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596170744] [2022-07-21 08:43:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:14,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:14,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:14,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596170744] [2022-07-21 08:43:14,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596170744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:14,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:14,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:43:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050862647] [2022-07-21 08:43:14,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:14,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:43:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:43:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:43:14,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 114 [2022-07-21 08:43:14,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 137 transitions, 784 flow. Second operand has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:14,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:14,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 114 [2022-07-21 08:43:14,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:14,607 INFO L129 PetriNetUnfolder]: 225/692 cut-off events. [2022-07-21 08:43:14,607 INFO L130 PetriNetUnfolder]: For 5161/10185 co-relation queries the response was YES. [2022-07-21 08:43:14,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 692 events. 225/692 cut-off events. For 5161/10185 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3670 event pairs, 65 based on Foata normal form. 34/673 useless extension candidates. Maximal degree in co-relation 3133. Up to 306 conditions per place. [2022-07-21 08:43:14,614 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 13 changer transitions 27/163 dead transitions. [2022-07-21 08:43:14,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 163 transitions, 1217 flow [2022-07-21 08:43:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:43:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:43:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 732 transitions. [2022-07-21 08:43:14,616 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8026315789473685 [2022-07-21 08:43:14,616 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 732 transitions. [2022-07-21 08:43:14,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 732 transitions. [2022-07-21 08:43:14,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:14,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 732 transitions. [2022-07-21 08:43:14,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.5) internal successors, (732), 8 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:14,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:14,620 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:14,620 INFO L186 Difference]: Start difference. First operand has 156 places, 137 transitions, 784 flow. Second operand 8 states and 732 transitions. [2022-07-21 08:43:14,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 163 transitions, 1217 flow [2022-07-21 08:43:14,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 1173 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-07-21 08:43:14,635 INFO L242 Difference]: Finished difference. Result has 159 places, 134 transitions, 787 flow [2022-07-21 08:43:14,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2022-07-21 08:43:14,636 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-21 08:43:14,636 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 787 flow [2022-07-21 08:43:14,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:14,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:14,636 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] [2022-07-21 08:43:14,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:43:14,637 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:14,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1329660998, now seen corresponding path program 3 times [2022-07-21 08:43:14,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:14,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218665584] [2022-07-21 08:43:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:14,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:14,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:14,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218665584] [2022-07-21 08:43:14,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218665584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:14,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:14,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:43:14,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481238041] [2022-07-21 08:43:14,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:43:14,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:14,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:43:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:43:14,914 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-21 08:43:14,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 787 flow. Second operand has 13 states, 13 states have (on average 82.76923076923077) internal successors, (1076), 13 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:14,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:14,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-21 08:43:14,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:15,655 INFO L129 PetriNetUnfolder]: 447/1143 cut-off events. [2022-07-21 08:43:15,655 INFO L130 PetriNetUnfolder]: For 7083/7618 co-relation queries the response was YES. [2022-07-21 08:43:15,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 1143 events. 447/1143 cut-off events. For 7083/7618 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6653 event pairs, 125 based on Foata normal form. 53/1145 useless extension candidates. Maximal degree in co-relation 4995. Up to 277 conditions per place. [2022-07-21 08:43:15,663 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 61 selfloop transitions, 18 changer transitions 67/217 dead transitions. [2022-07-21 08:43:15,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 217 transitions, 1940 flow [2022-07-21 08:43:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:43:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:43:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1322 transitions. [2022-07-21 08:43:15,666 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7730994152046784 [2022-07-21 08:43:15,666 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1322 transitions. [2022-07-21 08:43:15,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1322 transitions. [2022-07-21 08:43:15,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:15,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1322 transitions. [2022-07-21 08:43:15,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.13333333333334) internal successors, (1322), 15 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:15,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:15,671 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:15,671 INFO L186 Difference]: Start difference. First operand has 159 places, 134 transitions, 787 flow. Second operand 15 states and 1322 transitions. [2022-07-21 08:43:15,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 217 transitions, 1940 flow [2022-07-21 08:43:15,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 217 transitions, 1847 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:15,691 INFO L242 Difference]: Finished difference. Result has 169 places, 131 transitions, 808 flow [2022-07-21 08:43:15,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=808, PETRI_PLACES=169, PETRI_TRANSITIONS=131} [2022-07-21 08:43:15,691 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-21 08:43:15,692 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 131 transitions, 808 flow [2022-07-21 08:43:15,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.76923076923077) internal successors, (1076), 13 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:15,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:15,693 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] [2022-07-21 08:43:15,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:43:15,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:15,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:15,694 INFO L85 PathProgramCache]: Analyzing trace with hash 388887840, now seen corresponding path program 4 times [2022-07-21 08:43:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:15,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696699133] [2022-07-21 08:43:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:16,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:16,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696699133] [2022-07-21 08:43:16,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696699133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:16,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:16,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:43:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369910090] [2022-07-21 08:43:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:16,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:43:16,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:43:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:43:16,085 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-21 08:43:16,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 131 transitions, 808 flow. Second operand has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:16,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:16,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-21 08:43:16,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:16,756 INFO L129 PetriNetUnfolder]: 195/611 cut-off events. [2022-07-21 08:43:16,756 INFO L130 PetriNetUnfolder]: For 5404/11317 co-relation queries the response was YES. [2022-07-21 08:43:16,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 611 events. 195/611 cut-off events. For 5404/11317 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3079 event pairs, 86 based on Foata normal form. 40/603 useless extension candidates. Maximal degree in co-relation 2931. Up to 190 conditions per place. [2022-07-21 08:43:16,763 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 57 selfloop transitions, 29 changer transitions 1/163 dead transitions. [2022-07-21 08:43:16,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 1359 flow [2022-07-21 08:43:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:43:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:43:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1378 transitions. [2022-07-21 08:43:16,767 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7554824561403509 [2022-07-21 08:43:16,767 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1378 transitions. [2022-07-21 08:43:16,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1378 transitions. [2022-07-21 08:43:16,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:16,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1378 transitions. [2022-07-21 08:43:16,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 86.125) internal successors, (1378), 16 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:16,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:16,772 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:16,772 INFO L186 Difference]: Start difference. First operand has 169 places, 131 transitions, 808 flow. Second operand 16 states and 1378 transitions. [2022-07-21 08:43:16,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 1359 flow [2022-07-21 08:43:16,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1211 flow, removed 47 selfloop flow, removed 16 redundant places. [2022-07-21 08:43:16,788 INFO L242 Difference]: Finished difference. Result has 165 places, 146 transitions, 997 flow [2022-07-21 08:43:16,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=997, PETRI_PLACES=165, PETRI_TRANSITIONS=146} [2022-07-21 08:43:16,790 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 48 predicate places. [2022-07-21 08:43:16,790 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 146 transitions, 997 flow [2022-07-21 08:43:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:16,790 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:16,790 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] [2022-07-21 08:43:16,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:43:16,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:16,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash 105420936, now seen corresponding path program 1 times [2022-07-21 08:43:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:16,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842143719] [2022-07-21 08:43:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:16,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:17,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842143719] [2022-07-21 08:43:17,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842143719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:17,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:17,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 08:43:17,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841187562] [2022-07-21 08:43:17,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:17,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 08:43:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 08:43:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:43:17,421 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 114 [2022-07-21 08:43:17,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 146 transitions, 997 flow. Second operand has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:17,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:17,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 114 [2022-07-21 08:43:17,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:19,282 INFO L129 PetriNetUnfolder]: 410/1127 cut-off events. [2022-07-21 08:43:19,283 INFO L130 PetriNetUnfolder]: For 7707/8174 co-relation queries the response was YES. [2022-07-21 08:43:19,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 1127 events. 410/1127 cut-off events. For 7707/8174 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6706 event pairs, 64 based on Foata normal form. 62/1152 useless extension candidates. Maximal degree in co-relation 4837. Up to 232 conditions per place. [2022-07-21 08:43:19,294 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 73 selfloop transitions, 32 changer transitions 95/265 dead transitions. [2022-07-21 08:43:19,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 265 transitions, 2620 flow [2022-07-21 08:43:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:43:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-21 08:43:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2514 transitions. [2022-07-21 08:43:19,299 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7113752122241087 [2022-07-21 08:43:19,299 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2514 transitions. [2022-07-21 08:43:19,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2514 transitions. [2022-07-21 08:43:19,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:19,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2514 transitions. [2022-07-21 08:43:19,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 81.09677419354838) internal successors, (2514), 31 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:19,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 114.0) internal successors, (3648), 32 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:19,333 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 114.0) internal successors, (3648), 32 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:19,333 INFO L186 Difference]: Start difference. First operand has 165 places, 146 transitions, 997 flow. Second operand 31 states and 2514 transitions. [2022-07-21 08:43:19,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 265 transitions, 2620 flow [2022-07-21 08:43:19,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 265 transitions, 2383 flow, removed 110 selfloop flow, removed 5 redundant places. [2022-07-21 08:43:19,353 INFO L242 Difference]: Finished difference. Result has 214 places, 140 transitions, 1015 flow [2022-07-21 08:43:19,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1015, PETRI_PLACES=214, PETRI_TRANSITIONS=140} [2022-07-21 08:43:19,355 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 97 predicate places. [2022-07-21 08:43:19,355 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 140 transitions, 1015 flow [2022-07-21 08:43:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:19,355 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:19,356 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] [2022-07-21 08:43:19,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:43:19,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash -26874532, now seen corresponding path program 5 times [2022-07-21 08:43:19,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:19,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947965202] [2022-07-21 08:43:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:19,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:19,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:19,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947965202] [2022-07-21 08:43:19,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947965202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:19,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:19,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:19,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532031712] [2022-07-21 08:43:19,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:19,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:19,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:19,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-21 08:43:19,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 140 transitions, 1015 flow. Second operand has 14 states, 14 states have (on average 83.71428571428571) internal successors, (1172), 14 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:19,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:19,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-21 08:43:19,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:20,262 INFO L129 PetriNetUnfolder]: 135/438 cut-off events. [2022-07-21 08:43:20,262 INFO L130 PetriNetUnfolder]: For 5825/9708 co-relation queries the response was YES. [2022-07-21 08:43:20,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 438 events. 135/438 cut-off events. For 5825/9708 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1847 event pairs, 46 based on Foata normal form. 20/411 useless extension candidates. Maximal degree in co-relation 2252. Up to 152 conditions per place. [2022-07-21 08:43:20,267 INFO L132 encePairwiseOnDemand]: 103/114 looper letters, 47 selfloop transitions, 22 changer transitions 17/166 dead transitions. [2022-07-21 08:43:20,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 166 transitions, 1670 flow [2022-07-21 08:43:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:43:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:43:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1205 transitions. [2022-07-21 08:43:20,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7550125313283208 [2022-07-21 08:43:20,278 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1205 transitions. [2022-07-21 08:43:20,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1205 transitions. [2022-07-21 08:43:20,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:20,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1205 transitions. [2022-07-21 08:43:20,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.07142857142857) internal successors, (1205), 14 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,284 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,285 INFO L186 Difference]: Start difference. First operand has 214 places, 140 transitions, 1015 flow. Second operand 14 states and 1205 transitions. [2022-07-21 08:43:20,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 166 transitions, 1670 flow [2022-07-21 08:43:20,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 1337 flow, removed 153 selfloop flow, removed 34 redundant places. [2022-07-21 08:43:20,305 INFO L242 Difference]: Finished difference. Result has 176 places, 140 transitions, 920 flow [2022-07-21 08:43:20,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=920, PETRI_PLACES=176, PETRI_TRANSITIONS=140} [2022-07-21 08:43:20,306 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 59 predicate places. [2022-07-21 08:43:20,306 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 140 transitions, 920 flow [2022-07-21 08:43:20,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.71428571428571) internal successors, (1172), 14 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,306 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:20,306 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] [2022-07-21 08:43:20,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:43:20,307 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1387342515, now seen corresponding path program 1 times [2022-07-21 08:43:20,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:20,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736132665] [2022-07-21 08:43:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:20,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:20,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736132665] [2022-07-21 08:43:20,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736132665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:20,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:20,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:43:20,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830109916] [2022-07-21 08:43:20,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:43:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:43:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:43:20,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-21 08:43:20,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 140 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:20,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-21 08:43:20,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:20,926 INFO L129 PetriNetUnfolder]: 128/433 cut-off events. [2022-07-21 08:43:20,926 INFO L130 PetriNetUnfolder]: For 3057/6865 co-relation queries the response was YES. [2022-07-21 08:43:20,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 433 events. 128/433 cut-off events. For 3057/6865 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1912 event pairs, 34 based on Foata normal form. 21/404 useless extension candidates. Maximal degree in co-relation 1926. Up to 182 conditions per place. [2022-07-21 08:43:20,931 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 50 selfloop transitions, 15 changer transitions 12/157 dead transitions. [2022-07-21 08:43:20,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 157 transitions, 1270 flow [2022-07-21 08:43:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:43:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:43:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 786 transitions. [2022-07-21 08:43:20,933 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-21 08:43:20,933 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 786 transitions. [2022-07-21 08:43:20,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 786 transitions. [2022-07-21 08:43:20,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:20,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 786 transitions. [2022-07-21 08:43:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.33333333333333) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,936 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,936 INFO L186 Difference]: Start difference. First operand has 176 places, 140 transitions, 920 flow. Second operand 9 states and 786 transitions. [2022-07-21 08:43:20,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 157 transitions, 1270 flow [2022-07-21 08:43:20,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1212 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-07-21 08:43:20,950 INFO L242 Difference]: Finished difference. Result has 170 places, 141 transitions, 930 flow [2022-07-21 08:43:20,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=930, PETRI_PLACES=170, PETRI_TRANSITIONS=141} [2022-07-21 08:43:20,950 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 53 predicate places. [2022-07-21 08:43:20,951 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 930 flow [2022-07-21 08:43:20,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:20,951 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:20,951 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] [2022-07-21 08:43:20,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:43:20,952 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:20,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:20,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2064396969, now seen corresponding path program 2 times [2022-07-21 08:43:20,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:20,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117192249] [2022-07-21 08:43:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:21,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117192249] [2022-07-21 08:43:21,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117192249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:21,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:21,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:43:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808376707] [2022-07-21 08:43:21,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:21,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:43:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:43:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:43:21,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-21 08:43:21,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 141 transitions, 930 flow. Second operand has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:21,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:21,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-21 08:43:21,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:21,890 INFO L129 PetriNetUnfolder]: 127/429 cut-off events. [2022-07-21 08:43:21,890 INFO L130 PetriNetUnfolder]: For 3125/6825 co-relation queries the response was YES. [2022-07-21 08:43:21,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 429 events. 127/429 cut-off events. For 3125/6825 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1880 event pairs, 47 based on Foata normal form. 24/405 useless extension candidates. Maximal degree in co-relation 1933. Up to 161 conditions per place. [2022-07-21 08:43:21,893 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 35 selfloop transitions, 31 changer transitions 14/159 dead transitions. [2022-07-21 08:43:21,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 159 transitions, 1304 flow [2022-07-21 08:43:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:43:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:43:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1106 transitions. [2022-07-21 08:43:21,897 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7462887989203779 [2022-07-21 08:43:21,897 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1106 transitions. [2022-07-21 08:43:21,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1106 transitions. [2022-07-21 08:43:21,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:21,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1106 transitions. [2022-07-21 08:43:21,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.07692307692308) internal successors, (1106), 13 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:21,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:21,901 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:21,901 INFO L186 Difference]: Start difference. First operand has 170 places, 141 transitions, 930 flow. Second operand 13 states and 1106 transitions. [2022-07-21 08:43:21,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 159 transitions, 1304 flow [2022-07-21 08:43:21,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 159 transitions, 1262 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-07-21 08:43:21,914 INFO L242 Difference]: Finished difference. Result has 175 places, 139 transitions, 940 flow [2022-07-21 08:43:21,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=940, PETRI_PLACES=175, PETRI_TRANSITIONS=139} [2022-07-21 08:43:21,914 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-21 08:43:21,914 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 139 transitions, 940 flow [2022-07-21 08:43:21,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:21,915 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:21,915 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] [2022-07-21 08:43:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:43:21,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -850323535, now seen corresponding path program 3 times [2022-07-21 08:43:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635104780] [2022-07-21 08:43:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:22,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:22,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635104780] [2022-07-21 08:43:22,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635104780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:22,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:22,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124310972] [2022-07-21 08:43:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:22,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:22,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-21 08:43:22,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 139 transitions, 940 flow. Second operand has 14 states, 14 states have (on average 79.92857142857143) internal successors, (1119), 14 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:22,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-21 08:43:22,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:22,709 INFO L129 PetriNetUnfolder]: 267/790 cut-off events. [2022-07-21 08:43:22,709 INFO L130 PetriNetUnfolder]: For 5674/6116 co-relation queries the response was YES. [2022-07-21 08:43:22,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 790 events. 267/790 cut-off events. For 5674/6116 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4381 event pairs, 105 based on Foata normal form. 44/796 useless extension candidates. Maximal degree in co-relation 3290. Up to 266 conditions per place. [2022-07-21 08:43:22,715 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 21 changer transitions 43/202 dead transitions. [2022-07-21 08:43:22,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 202 transitions, 1876 flow [2022-07-21 08:43:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:43:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:43:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1428 transitions. [2022-07-21 08:43:22,717 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2022-07-21 08:43:22,718 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1428 transitions. [2022-07-21 08:43:22,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1428 transitions. [2022-07-21 08:43:22,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:22,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1428 transitions. [2022-07-21 08:43:22,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,723 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,723 INFO L186 Difference]: Start difference. First operand has 175 places, 139 transitions, 940 flow. Second operand 17 states and 1428 transitions. [2022-07-21 08:43:22,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 202 transitions, 1876 flow [2022-07-21 08:43:22,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 202 transitions, 1791 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-07-21 08:43:22,758 INFO L242 Difference]: Finished difference. Result has 186 places, 137 transitions, 913 flow [2022-07-21 08:43:22,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=913, PETRI_PLACES=186, PETRI_TRANSITIONS=137} [2022-07-21 08:43:22,758 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 69 predicate places. [2022-07-21 08:43:22,759 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 137 transitions, 913 flow [2022-07-21 08:43:22,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 79.92857142857143) internal successors, (1119), 14 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:22,759 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] [2022-07-21 08:43:22,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:43:22,760 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-21 08:43:22,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -957608077, now seen corresponding path program 4 times [2022-07-21 08:43:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:22,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835603588] [2022-07-21 08:43:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835603588] [2022-07-21 08:43:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835603588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:22,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:22,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:43:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723925847] [2022-07-21 08:43:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:22,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:43:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:43:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:43:22,987 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2022-07-21 08:43:22,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 137 transitions, 913 flow. Second operand has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:22,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2022-07-21 08:43:22,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:23,292 INFO L129 PetriNetUnfolder]: 106/352 cut-off events. [2022-07-21 08:43:23,292 INFO L130 PetriNetUnfolder]: For 2648/6023 co-relation queries the response was YES. [2022-07-21 08:43:23,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 352 events. 106/352 cut-off events. For 2648/6023 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1399 event pairs, 62 based on Foata normal form. 14/319 useless extension candidates. Maximal degree in co-relation 1637. Up to 165 conditions per place. [2022-07-21 08:43:23,295 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2022-07-21 08:43:23,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 140 transitions, 1099 flow [2022-07-21 08:43:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:43:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:43:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2022-07-21 08:43:23,298 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7758284600389863 [2022-07-21 08:43:23,298 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2022-07-21 08:43:23,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2022-07-21 08:43:23,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:23,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2022-07-21 08:43:23,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:23,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:23,301 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:23,301 INFO L186 Difference]: Start difference. First operand has 186 places, 137 transitions, 913 flow. Second operand 9 states and 796 transitions. [2022-07-21 08:43:23,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 140 transitions, 1099 flow [2022-07-21 08:43:23,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 140 transitions, 1043 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-21 08:43:23,312 INFO L242 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2022-07-21 08:43:23,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2022-07-21 08:43:23,313 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-21 08:43:23,313 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2022-07-21 08:43:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:23,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-21 08:43:23,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-21 08:43:23,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-21 08:43:23,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-21 08:43:23,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-07-21 08:43:23,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-21 08:43:23,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-21 08:43:23,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:43:23,317 INFO L356 BasicCegarLoop]: Path program histogram: [5, 5, 4, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:23,322 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:43:23,322 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:43:23,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:43:23 BasicIcfg [2022-07-21 08:43:23,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:43:23,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:43:23,327 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:43:23,327 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:43:23,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:03" (3/4) ... [2022-07-21 08:43:23,329 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:43:23,334 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-21 08:43:23,334 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-21 08:43:23,341 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 139 nodes and edges [2022-07-21 08:43:23,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-07-21 08:43:23,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-21 08:43:23,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:43:23,388 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:43:23,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:43:23,389 INFO L158 Benchmark]: Toolchain (without parser) took 22590.60ms. Allocated memory was 54.5MB in the beginning and 427.8MB in the end (delta: 373.3MB). Free memory was 30.0MB in the beginning and 242.5MB in the end (delta: -212.5MB). Peak memory consumption was 159.0MB. Max. memory is 16.1GB. [2022-07-21 08:43:23,389 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:43:23,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.87ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.9MB in the beginning and 43.8MB in the end (delta: -13.9MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-21 08:43:23,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.93ms. Allocated memory is still 67.1MB. Free memory was 43.8MB in the beginning and 39.4MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:43:23,390 INFO L158 Benchmark]: Boogie Preprocessor took 55.82ms. Allocated memory is still 67.1MB. Free memory was 39.4MB in the beginning and 35.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:43:23,390 INFO L158 Benchmark]: RCFGBuilder took 1637.12ms. Allocated memory was 67.1MB in the beginning and 102.8MB in the end (delta: 35.7MB). Free memory was 35.9MB in the beginning and 65.0MB in the end (delta: -29.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2022-07-21 08:43:23,390 INFO L158 Benchmark]: TraceAbstraction took 20057.38ms. Allocated memory was 102.8MB in the beginning and 427.8MB in the end (delta: 325.1MB). Free memory was 64.4MB in the beginning and 248.8MB in the end (delta: -184.4MB). Peak memory consumption was 139.9MB. Max. memory is 16.1GB. [2022-07-21 08:43:23,391 INFO L158 Benchmark]: Witness Printer took 61.45ms. Allocated memory is still 427.8MB. Free memory was 248.8MB in the beginning and 242.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 08:43:23,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.87ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.9MB in the beginning and 43.8MB in the end (delta: -13.9MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.93ms. Allocated memory is still 67.1MB. Free memory was 43.8MB in the beginning and 39.4MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.82ms. Allocated memory is still 67.1MB. Free memory was 39.4MB in the beginning and 35.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1637.12ms. Allocated memory was 67.1MB in the beginning and 102.8MB in the end (delta: 35.7MB). Free memory was 35.9MB in the beginning and 65.0MB in the end (delta: -29.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * TraceAbstraction took 20057.38ms. Allocated memory was 102.8MB in the beginning and 427.8MB in the end (delta: 325.1MB). Free memory was 64.4MB in the beginning and 248.8MB in the end (delta: -184.4MB). Peak memory consumption was 139.9MB. Max. memory is 16.1GB. * Witness Printer took 61.45ms. Allocated memory is still 427.8MB. Free memory was 248.8MB in the beginning and 242.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.9s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1053 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1053 mSDsluCounter, 1305 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2126 mSDsCounter, 616 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4641 IncrementalHoareTripleChecker+Invalid, 5257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 616 mSolverCounterUnsat, 200 mSDtfsCounter, 4641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1015occurred in iteration=15, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1694 NumberOfCodeBlocks, 1694 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1674 ConstructedInterpolants, 0 QuantifiedInterpolants, 14207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:43:23,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE