./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:38:50,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:38:50,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:38:50,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:38:50,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:38:50,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:38:50,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:38:50,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:38:50,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:38:50,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:38:50,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:38:50,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:38:50,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:38:50,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:38:50,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:38:50,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:38:50,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:38:50,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:38:50,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:38:50,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:38:50,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:38:50,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:38:50,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:38:50,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:38:50,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:38:50,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:38:50,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:38:50,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:38:50,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:38:50,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:38:50,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:38:50,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:38:50,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:38:50,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:38:50,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:38:50,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:38:50,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:38:50,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:38:50,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:38:50,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:38:50,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:38:50,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:38:50,677 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:38:50,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:38:50,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:38:50,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:38:50,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:38:50,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:38:50,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:38:50,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:38:50,681 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:38:50,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:38:50,682 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:38:50,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:38:50,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:38:50,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:38:50,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:38:50,683 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:38:50,683 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:38:50,683 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:38:50,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:38:50,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:38:50,683 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:38:50,684 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:38:50,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:38:50,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:38:50,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:38:50,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:38:50,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:38:50,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:38:50,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:38:50,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:38:50,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:38:50,685 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:38:50,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:38:50,686 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:38:50,686 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:38:50,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:38:51,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:38:51,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:38:51,011 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:38:51,011 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:38:51,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-30 07:38:52,112 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:38:52,325 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:38:52,326 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-30 07:38:52,333 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4927ce8ff/967b7edc01204f009c577290b6787f5f/FLAG28cda1289 [2023-08-30 07:38:52,348 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4927ce8ff/967b7edc01204f009c577290b6787f5f [2023-08-30 07:38:52,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:38:52,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:38:52,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:38:52,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:38:52,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:38:52,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56159554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52, skipping insertion in model container [2023-08-30 07:38:52,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:38:52,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:38:52,583 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-08-30 07:38:52,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:38:52,604 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:38:52,641 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-08-30 07:38:52,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:38:52,656 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:38:52,656 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:38:52,662 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:38:52,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52 WrapperNode [2023-08-30 07:38:52,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:38:52,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:38:52,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:38:52,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:38:52,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,725 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-08-30 07:38:52,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:38:52,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:38:52,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:38:52,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:38:52,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:38:52,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:38:52,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:38:52,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:38:52,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (1/1) ... [2023-08-30 07:38:52,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:38:52,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:38:52,850 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) [2023-08-30 07:38:52,877 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 [2023-08-30 07:38:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:38:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:38:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:38:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:38:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:38:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 07:38:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 07:38:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 07:38:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 07:38:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 07:38:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:38:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 07:38:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 07:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 07:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:38:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 07:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:38:52,902 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 07:38:53,022 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:38:53,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:38:53,457 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:38:53,519 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:38:53,520 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 07:38:53,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:38:53 BoogieIcfgContainer [2023-08-30 07:38:53,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:38:53,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:38:53,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:38:53,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:38:53,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:38:52" (1/3) ... [2023-08-30 07:38:53,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348d9f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:38:53, skipping insertion in model container [2023-08-30 07:38:53,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:38:52" (2/3) ... [2023-08-30 07:38:53,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348d9f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:38:53, skipping insertion in model container [2023-08-30 07:38:53,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:38:53" (3/3) ... [2023-08-30 07:38:53,529 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-08-30 07:38:53,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:38:53,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 07:38:53,544 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:38:53,654 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 07:38:53,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 155 transitions, 342 flow [2023-08-30 07:38:53,777 INFO L130 PetriNetUnfolder]: 2/151 cut-off events. [2023-08-30 07:38:53,778 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:38:53,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 151 events. 2/151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-08-30 07:38:53,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 155 transitions, 342 flow [2023-08-30 07:38:53,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 147 transitions, 318 flow [2023-08-30 07:38:53,801 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:38:53,809 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 147 transitions, 318 flow [2023-08-30 07:38:53,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 147 transitions, 318 flow [2023-08-30 07:38:53,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 147 transitions, 318 flow [2023-08-30 07:38:53,837 INFO L130 PetriNetUnfolder]: 2/147 cut-off events. [2023-08-30 07:38:53,838 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:38:53,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 147 events. 2/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-08-30 07:38:53,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 2336 [2023-08-30 07:38:58,592 INFO L134 LiptonReduction]: Checked pairs total: 14657 [2023-08-30 07:38:58,592 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-30 07:38:58,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:38:58,610 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f9be00c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:38:58,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 07:38:58,613 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 07:38:58,613 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:38:58,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:38:58,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 07:38:58,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:38:58,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:38:58,618 INFO L85 PathProgramCache]: Analyzing trace with hash 571, now seen corresponding path program 1 times [2023-08-30 07:38:58,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:38:58,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542943522] [2023-08-30 07:38:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:38:58,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:38:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:38:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:38:58,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:38:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542943522] [2023-08-30 07:38:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542943522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:38:58,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:38:58,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 07:38:58,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828683225] [2023-08-30 07:38:58,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:38:58,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 07:38:58,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:38:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 07:38:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 07:38:58,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 277 [2023-08-30 07:38:58,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 140 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:58,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:38:58,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 277 [2023-08-30 07:38:58,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:38:59,083 INFO L130 PetriNetUnfolder]: 1328/2127 cut-off events. [2023-08-30 07:38:59,084 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 07:38:59,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 2127 events. 1328/2127 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13522 event pairs, 1328 based on Foata normal form. 0/1544 useless extension candidates. Maximal degree in co-relation 3308. Up to 1968 conditions per place. [2023-08-30 07:38:59,110 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 39 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-30 07:38:59,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 212 flow [2023-08-30 07:38:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 07:38:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 07:38:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2023-08-30 07:38:59,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5812274368231047 [2023-08-30 07:38:59,132 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2023-08-30 07:38:59,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2023-08-30 07:38:59,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:38:59,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2023-08-30 07:38:59,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,147 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,149 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 140 flow. Second operand 2 states and 322 transitions. [2023-08-30 07:38:59,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 212 flow [2023-08-30 07:38:59,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 196 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 07:38:59,163 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 118 flow [2023-08-30 07:38:59,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-30 07:38:59,167 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-30 07:38:59,168 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 118 flow [2023-08-30 07:38:59,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:38:59,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:38:59,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 07:38:59,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:38:59,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:38:59,175 INFO L85 PathProgramCache]: Analyzing trace with hash 561080, now seen corresponding path program 1 times [2023-08-30 07:38:59,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:38:59,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680752593] [2023-08-30 07:38:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:38:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:38:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:38:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:38:59,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:38:59,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680752593] [2023-08-30 07:38:59,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680752593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:38:59,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:38:59,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:38:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635191611] [2023-08-30 07:38:59,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:38:59,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:38:59,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:38:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:38:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:38:59,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-08-30 07:38:59,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:38:59,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-08-30 07:38:59,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:38:59,855 INFO L130 PetriNetUnfolder]: 1272/2041 cut-off events. [2023-08-30 07:38:59,856 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:38:59,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 2041 events. 1272/2041 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12895 event pairs, 1272 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 3962. Up to 1881 conditions per place. [2023-08-30 07:38:59,868 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 36 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 07:38:59,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 188 flow [2023-08-30 07:38:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:38:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:38:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-30 07:38:59,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342960288808665 [2023-08-30 07:38:59,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-30 07:38:59,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-30 07:38:59,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:38:59,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-30 07:38:59,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,876 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 118 flow. Second operand 3 states and 444 transitions. [2023-08-30 07:38:59,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 188 flow [2023-08-30 07:38:59,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 07:38:59,878 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 116 flow [2023-08-30 07:38:59,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-30 07:38:59,879 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-30 07:38:59,879 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 116 flow [2023-08-30 07:38:59,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:38:59,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:38:59,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:38:59,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 07:38:59,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:38:59,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:38:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash 561079, now seen corresponding path program 1 times [2023-08-30 07:38:59,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:38:59,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011961170] [2023-08-30 07:38:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:38:59,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:38:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:00,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011961170] [2023-08-30 07:39:00,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011961170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:00,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:00,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:39:00,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138440950] [2023-08-30 07:39:00,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:00,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:00,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:00,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-08-30 07:39:00,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:00,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-08-30 07:39:00,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:00,379 INFO L130 PetriNetUnfolder]: 1216/1955 cut-off events. [2023-08-30 07:39:00,379 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:39:00,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1955 events. 1216/1955 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12338 event pairs, 1216 based on Foata normal form. 0/1436 useless extension candidates. Maximal degree in co-relation 3791. Up to 1795 conditions per place. [2023-08-30 07:39:00,392 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 34 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 07:39:00,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 182 flow [2023-08-30 07:39:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-30 07:39:00,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102286401925391 [2023-08-30 07:39:00,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-30 07:39:00,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-30 07:39:00,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:00,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-30 07:39:00,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,400 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 116 flow. Second operand 3 states and 424 transitions. [2023-08-30 07:39:00,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 182 flow [2023-08-30 07:39:00,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:00,402 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 113 flow [2023-08-30 07:39:00,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-30 07:39:00,404 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2023-08-30 07:39:00,406 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 113 flow [2023-08-30 07:39:00,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:00,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:39:00,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 07:39:00,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:00,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash 539212037, now seen corresponding path program 1 times [2023-08-30 07:39:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766893753] [2023-08-30 07:39:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:00,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766893753] [2023-08-30 07:39:00,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766893753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:00,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:00,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:39:00,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299281858] [2023-08-30 07:39:00,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:00,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:00,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:00,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-08-30 07:39:00,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:00,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-08-30 07:39:00,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:00,765 INFO L130 PetriNetUnfolder]: 1192/1913 cut-off events. [2023-08-30 07:39:00,766 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:39:00,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1913 events. 1192/1913 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12008 event pairs, 1192 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 3708. Up to 1753 conditions per place. [2023-08-30 07:39:00,776 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 32 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 07:39:00,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 175 flow [2023-08-30 07:39:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-30 07:39:00,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529482551143201 [2023-08-30 07:39:00,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-30 07:39:00,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-30 07:39:00,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:00,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-30 07:39:00,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,783 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 113 flow. Second operand 3 states and 440 transitions. [2023-08-30 07:39:00,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 175 flow [2023-08-30 07:39:00,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:00,785 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 110 flow [2023-08-30 07:39:00,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-08-30 07:39:00,786 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-08-30 07:39:00,786 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 110 flow [2023-08-30 07:39:00,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:00,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:39:00,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 07:39:00,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:00,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash 539212036, now seen corresponding path program 1 times [2023-08-30 07:39:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:00,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588370797] [2023-08-30 07:39:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:00,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:00,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588370797] [2023-08-30 07:39:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588370797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:00,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:39:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258413418] [2023-08-30 07:39:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:00,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-08-30 07:39:00,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:00,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:00,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-08-30 07:39:00,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:01,106 INFO L130 PetriNetUnfolder]: 1168/1871 cut-off events. [2023-08-30 07:39:01,106 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:39:01,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 1871 events. 1168/1871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11768 event pairs, 1168 based on Foata normal form. 0/1402 useless extension candidates. Maximal degree in co-relation 3625. Up to 1711 conditions per place. [2023-08-30 07:39:01,118 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 30 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 07:39:01,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 168 flow [2023-08-30 07:39:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 07:39:01,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054151624548736 [2023-08-30 07:39:01,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 07:39:01,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 07:39:01,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:01,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 07:39:01,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,125 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 110 flow. Second operand 3 states and 420 transitions. [2023-08-30 07:39:01,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 168 flow [2023-08-30 07:39:01,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:01,127 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 107 flow [2023-08-30 07:39:01,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-08-30 07:39:01,128 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2023-08-30 07:39:01,128 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 107 flow [2023-08-30 07:39:01,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:01,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:39:01,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 07:39:01,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:01,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1508263802, now seen corresponding path program 1 times [2023-08-30 07:39:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564974866] [2023-08-30 07:39:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:01,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564974866] [2023-08-30 07:39:01,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564974866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:01,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:01,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:39:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153265925] [2023-08-30 07:39:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:01,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-08-30 07:39:01,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:01,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-08-30 07:39:01,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:01,377 INFO L130 PetriNetUnfolder]: 1112/1785 cut-off events. [2023-08-30 07:39:01,377 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:39:01,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3458 conditions, 1785 events. 1112/1785 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11061 event pairs, 1112 based on Foata normal form. 0/1364 useless extension candidates. Maximal degree in co-relation 3454. Up to 1625 conditions per place. [2023-08-30 07:39:01,389 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 28 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 07:39:01,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 161 flow [2023-08-30 07:39:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-30 07:39:01,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030084235860409 [2023-08-30 07:39:01,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-30 07:39:01,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-30 07:39:01,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:01,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-30 07:39:01,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,396 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 107 flow. Second operand 3 states and 418 transitions. [2023-08-30 07:39:01,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 161 flow [2023-08-30 07:39:01,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:01,398 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 104 flow [2023-08-30 07:39:01,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-30 07:39:01,399 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -14 predicate places. [2023-08-30 07:39:01,399 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 104 flow [2023-08-30 07:39:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:01,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:39:01,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 07:39:01,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:01,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:01,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1508263804, now seen corresponding path program 1 times [2023-08-30 07:39:01,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:01,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143947222] [2023-08-30 07:39:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:01,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:01,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143947222] [2023-08-30 07:39:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143947222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:01,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:39:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917302502] [2023-08-30 07:39:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:01,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:01,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-08-30 07:39:01,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:01,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-08-30 07:39:01,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:01,653 INFO L130 PetriNetUnfolder]: 1056/1699 cut-off events. [2023-08-30 07:39:01,654 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:39:01,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 1699 events. 1056/1699 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10453 event pairs, 1056 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 3283. Up to 1539 conditions per place. [2023-08-30 07:39:01,664 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 26 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 07:39:01,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 154 flow [2023-08-30 07:39:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-30 07:39:01,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222623345367028 [2023-08-30 07:39:01,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-30 07:39:01,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-30 07:39:01,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:01,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-30 07:39:01,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,671 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 104 flow. Second operand 3 states and 434 transitions. [2023-08-30 07:39:01,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 154 flow [2023-08-30 07:39:01,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:01,672 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 101 flow [2023-08-30 07:39:01,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-08-30 07:39:01,673 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-08-30 07:39:01,673 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 101 flow [2023-08-30 07:39:01,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:01,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:39:01,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 07:39:01,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:01,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2037522704, now seen corresponding path program 1 times [2023-08-30 07:39:01,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:01,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959775306] [2023-08-30 07:39:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:01,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:01,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959775306] [2023-08-30 07:39:01,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959775306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:01,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:01,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:39:01,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935804380] [2023-08-30 07:39:01,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:01,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:01,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:01,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:01,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:01,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-30 07:39:01,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:01,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-30 07:39:01,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:01,883 INFO L130 PetriNetUnfolder]: 840/1402 cut-off events. [2023-08-30 07:39:01,884 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:39:01,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1402 events. 840/1402 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8549 event pairs, 840 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 2690. Up to 1242 conditions per place. [2023-08-30 07:39:01,891 INFO L137 encePairwiseOnDemand]: 275/277 looper letters, 25 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 07:39:01,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 151 flow [2023-08-30 07:39:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-08-30 07:39:01,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018050541516246 [2023-08-30 07:39:01,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-08-30 07:39:01,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-08-30 07:39:01,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:01,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-08-30 07:39:01,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,897 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 101 flow. Second operand 3 states and 417 transitions. [2023-08-30 07:39:01,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 151 flow [2023-08-30 07:39:01,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:01,898 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 100 flow [2023-08-30 07:39:01,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-08-30 07:39:01,899 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-08-30 07:39:01,899 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 100 flow [2023-08-30 07:39:01,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:01,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:01,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:39:01,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 07:39:01,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:01,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2037522705, now seen corresponding path program 1 times [2023-08-30 07:39:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400475890] [2023-08-30 07:39:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:02,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400475890] [2023-08-30 07:39:02,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400475890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:02,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:02,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 07:39:02,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009393247] [2023-08-30 07:39:02,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:02,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 07:39:02,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:02,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 07:39:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 07:39:02,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 277 [2023-08-30 07:39:02,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 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) [2023-08-30 07:39:02,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:02,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 277 [2023-08-30 07:39:02,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:02,274 INFO L130 PetriNetUnfolder]: 624/1105 cut-off events. [2023-08-30 07:39:02,274 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:39:02,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1105 events. 624/1105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6650 event pairs, 624 based on Foata normal form. 0/1002 useless extension candidates. Maximal degree in co-relation 2097. Up to 945 conditions per place. [2023-08-30 07:39:02,280 INFO L137 encePairwiseOnDemand]: 275/277 looper letters, 24 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 07:39:02,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 41 transitions, 148 flow [2023-08-30 07:39:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-08-30 07:39:02,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4536702767749699 [2023-08-30 07:39:02,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-08-30 07:39:02,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-08-30 07:39:02,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:02,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-08-30 07:39:02,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,286 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 100 flow. Second operand 3 states and 377 transitions. [2023-08-30 07:39:02,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 41 transitions, 148 flow [2023-08-30 07:39:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:02,288 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 99 flow [2023-08-30 07:39:02,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2023-08-30 07:39:02,289 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-08-30 07:39:02,289 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 99 flow [2023-08-30 07:39:02,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 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) [2023-08-30 07:39:02,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:02,290 INFO L208 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] [2023-08-30 07:39:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 07:39:02,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:02,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1771008404, now seen corresponding path program 1 times [2023-08-30 07:39:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049289472] [2023-08-30 07:39:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:02,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:02,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049289472] [2023-08-30 07:39:02,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049289472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:02,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:02,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:39:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798434234] [2023-08-30 07:39:02,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:02,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:02,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 07:39:02,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:02,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 07:39:02,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:02,796 INFO L130 PetriNetUnfolder]: 665/1143 cut-off events. [2023-08-30 07:39:02,797 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 07:39:02,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1143 events. 665/1143 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6172 event pairs, 492 based on Foata normal form. 25/1154 useless extension candidates. Maximal degree in co-relation 2201. Up to 960 conditions per place. [2023-08-30 07:39:02,805 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 07:39:02,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 189 flow [2023-08-30 07:39:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-30 07:39:02,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415162454873647 [2023-08-30 07:39:02,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-30 07:39:02,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-30 07:39:02,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:02,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-30 07:39:02,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,812 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 99 flow. Second operand 3 states and 450 transitions. [2023-08-30 07:39:02,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 189 flow [2023-08-30 07:39:02,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:02,815 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 106 flow [2023-08-30 07:39:02,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-30 07:39:02,817 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2023-08-30 07:39:02,818 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 106 flow [2023-08-30 07:39:02,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:02,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:02,818 INFO L208 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] [2023-08-30 07:39:02,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 07:39:02,819 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:02,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash -603300392, now seen corresponding path program 2 times [2023-08-30 07:39:02,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:02,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937615982] [2023-08-30 07:39:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:02,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937615982] [2023-08-30 07:39:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937615982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:39:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470427381] [2023-08-30 07:39:03,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:03,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 07:39:03,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:03,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 07:39:03,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:03,212 INFO L130 PetriNetUnfolder]: 707/1243 cut-off events. [2023-08-30 07:39:03,213 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 07:39:03,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 1243 events. 707/1243 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6895 event pairs, 176 based on Foata normal form. 14/1226 useless extension candidates. Maximal degree in co-relation 2459. Up to 936 conditions per place. [2023-08-30 07:39:03,218 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 07:39:03,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 207 flow [2023-08-30 07:39:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 07:39:03,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439229843561973 [2023-08-30 07:39:03,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 07:39:03,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 07:39:03,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:03,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 07:39:03,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,224 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 106 flow. Second operand 3 states and 452 transitions. [2023-08-30 07:39:03,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 207 flow [2023-08-30 07:39:03,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:39:03,226 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 110 flow [2023-08-30 07:39:03,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-08-30 07:39:03,227 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-08-30 07:39:03,227 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 110 flow [2023-08-30 07:39:03,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:03,227 INFO L208 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] [2023-08-30 07:39:03,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 07:39:03,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:03,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -669590944, now seen corresponding path program 3 times [2023-08-30 07:39:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091079309] [2023-08-30 07:39:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:03,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:03,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091079309] [2023-08-30 07:39:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091079309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:03,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:03,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:39:03,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760612] [2023-08-30 07:39:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:03,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:03,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:03,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 07:39:03,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:03,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 07:39:03,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:03,564 INFO L130 PetriNetUnfolder]: 667/1137 cut-off events. [2023-08-30 07:39:03,564 INFO L131 PetriNetUnfolder]: For 139/142 co-relation queries the response was YES. [2023-08-30 07:39:03,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1137 events. 667/1137 cut-off events. For 139/142 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6312 event pairs, 160 based on Foata normal form. 25/1125 useless extension candidates. Maximal degree in co-relation 2368. Up to 964 conditions per place. [2023-08-30 07:39:03,580 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 07:39:03,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 211 flow [2023-08-30 07:39:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 07:39:03,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439229843561973 [2023-08-30 07:39:03,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 07:39:03,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 07:39:03,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:03,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 07:39:03,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,586 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 110 flow. Second operand 3 states and 452 transitions. [2023-08-30 07:39:03,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 211 flow [2023-08-30 07:39:03,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:39:03,588 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 114 flow [2023-08-30 07:39:03,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-08-30 07:39:03,589 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2023-08-30 07:39:03,589 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 114 flow [2023-08-30 07:39:03,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:03,589 INFO L208 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] [2023-08-30 07:39:03,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 07:39:03,590 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:03,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:03,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1233912070, now seen corresponding path program 4 times [2023-08-30 07:39:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434602568] [2023-08-30 07:39:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:03,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:03,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:03,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434602568] [2023-08-30 07:39:03,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434602568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:03,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:03,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:39:03,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678417141] [2023-08-30 07:39:03,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:03,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:39:03,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:39:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:39:03,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 07:39:03,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:03,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 07:39:03,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:03,892 INFO L130 PetriNetUnfolder]: 581/1041 cut-off events. [2023-08-30 07:39:03,892 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-30 07:39:03,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 1041 events. 581/1041 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5499 event pairs, 176 based on Foata normal form. 30/1027 useless extension candidates. Maximal degree in co-relation 2210. Up to 756 conditions per place. [2023-08-30 07:39:03,898 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 07:39:03,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 208 flow [2023-08-30 07:39:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:39:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:39:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-30 07:39:03,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415162454873647 [2023-08-30 07:39:03,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-30 07:39:03,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-30 07:39:03,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:03,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-30 07:39:03,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,904 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 114 flow. Second operand 3 states and 450 transitions. [2023-08-30 07:39:03,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 208 flow [2023-08-30 07:39:03,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:39:03,906 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 118 flow [2023-08-30 07:39:03,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-08-30 07:39:03,907 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-30 07:39:03,907 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 118 flow [2023-08-30 07:39:03,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:03,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:03,907 INFO L208 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] [2023-08-30 07:39:03,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 07:39:03,908 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:03,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1838582346, now seen corresponding path program 5 times [2023-08-30 07:39:03,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:03,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531151879] [2023-08-30 07:39:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:03,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:05,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531151879] [2023-08-30 07:39:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531151879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:05,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:39:05,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313686678] [2023-08-30 07:39:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:05,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:39:05,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:39:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:39:06,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:39:06,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 118 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:06,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:06,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:39:06,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:08,797 INFO L130 PetriNetUnfolder]: 6729/10127 cut-off events. [2023-08-30 07:39:08,797 INFO L131 PetriNetUnfolder]: For 2007/2007 co-relation queries the response was YES. [2023-08-30 07:39:08,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22355 conditions, 10127 events. 6729/10127 cut-off events. For 2007/2007 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 55117 event pairs, 1243 based on Foata normal form. 1/10128 useless extension candidates. Maximal degree in co-relation 22347. Up to 2692 conditions per place. [2023-08-30 07:39:08,856 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 200 selfloop transitions, 13 changer transitions 16/233 dead transitions. [2023-08-30 07:39:08,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 233 transitions, 1048 flow [2023-08-30 07:39:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:39:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:39:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1798 transitions. [2023-08-30 07:39:08,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46364105208870554 [2023-08-30 07:39:08,863 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1798 transitions. [2023-08-30 07:39:08,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1798 transitions. [2023-08-30 07:39:08,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:08,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1798 transitions. [2023-08-30 07:39:08,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.42857142857142) internal successors, (1798), 14 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:08,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:08,878 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:08,878 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 118 flow. Second operand 14 states and 1798 transitions. [2023-08-30 07:39:08,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 233 transitions, 1048 flow [2023-08-30 07:39:08,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 233 transitions, 1044 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:39:08,885 INFO L231 Difference]: Finished difference. Result has 84 places, 53 transitions, 219 flow [2023-08-30 07:39:08,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=53} [2023-08-30 07:39:08,886 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2023-08-30 07:39:08,886 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 53 transitions, 219 flow [2023-08-30 07:39:08,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:08,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:08,888 INFO L208 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] [2023-08-30 07:39:08,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 07:39:08,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:08,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1433664338, now seen corresponding path program 6 times [2023-08-30 07:39:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:08,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964909382] [2023-08-30 07:39:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:08,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:10,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964909382] [2023-08-30 07:39:10,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964909382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:10,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:10,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:39:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301825260] [2023-08-30 07:39:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:10,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:39:10,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:39:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:39:11,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:39:11,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 53 transitions, 219 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:11,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:11,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:39:11,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:14,677 INFO L130 PetriNetUnfolder]: 14627/22410 cut-off events. [2023-08-30 07:39:14,677 INFO L131 PetriNetUnfolder]: For 22881/22881 co-relation queries the response was YES. [2023-08-30 07:39:14,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66886 conditions, 22410 events. 14627/22410 cut-off events. For 22881/22881 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 144815 event pairs, 2615 based on Foata normal form. 1/22411 useless extension candidates. Maximal degree in co-relation 66866. Up to 6868 conditions per place. [2023-08-30 07:39:14,882 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 253 selfloop transitions, 25 changer transitions 9/291 dead transitions. [2023-08-30 07:39:14,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 291 transitions, 1711 flow [2023-08-30 07:39:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:39:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:39:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1804 transitions. [2023-08-30 07:39:14,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46518824136152653 [2023-08-30 07:39:14,888 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1804 transitions. [2023-08-30 07:39:14,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1804 transitions. [2023-08-30 07:39:14,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:14,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1804 transitions. [2023-08-30 07:39:14,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.85714285714286) internal successors, (1804), 14 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:14,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:14,901 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:14,901 INFO L175 Difference]: Start difference. First operand has 84 places, 53 transitions, 219 flow. Second operand 14 states and 1804 transitions. [2023-08-30 07:39:14,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 291 transitions, 1711 flow [2023-08-30 07:39:15,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 291 transitions, 1667 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-30 07:39:15,368 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 454 flow [2023-08-30 07:39:15,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=454, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2023-08-30 07:39:15,369 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2023-08-30 07:39:15,369 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 454 flow [2023-08-30 07:39:15,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:15,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:15,371 INFO L208 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] [2023-08-30 07:39:15,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 07:39:15,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:15,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash 325330296, now seen corresponding path program 7 times [2023-08-30 07:39:15,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:15,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671556488] [2023-08-30 07:39:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:15,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671556488] [2023-08-30 07:39:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671556488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:17,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:17,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:39:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697198257] [2023-08-30 07:39:17,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:39:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:39:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:39:17,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:39:17,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 454 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:17,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:17,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:39:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:23,136 INFO L130 PetriNetUnfolder]: 24683/38513 cut-off events. [2023-08-30 07:39:23,136 INFO L131 PetriNetUnfolder]: For 94709/94709 co-relation queries the response was YES. [2023-08-30 07:39:23,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139596 conditions, 38513 events. 24683/38513 cut-off events. For 94709/94709 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 280890 event pairs, 4855 based on Foata normal form. 1/38514 useless extension candidates. Maximal degree in co-relation 139566. Up to 13193 conditions per place. [2023-08-30 07:39:23,500 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 289 selfloop transitions, 41 changer transitions 9/343 dead transitions. [2023-08-30 07:39:23,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 343 transitions, 2546 flow [2023-08-30 07:39:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:39:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:39:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1807 transitions. [2023-08-30 07:39:23,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596183599793706 [2023-08-30 07:39:23,506 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1807 transitions. [2023-08-30 07:39:23,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1807 transitions. [2023-08-30 07:39:23,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:23,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1807 transitions. [2023-08-30 07:39:23,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.07142857142858) internal successors, (1807), 14 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:23,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:23,531 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:23,531 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 454 flow. Second operand 14 states and 1807 transitions. [2023-08-30 07:39:23,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 343 transitions, 2546 flow [2023-08-30 07:39:24,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 343 transitions, 2500 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-30 07:39:24,252 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 942 flow [2023-08-30 07:39:24,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=942, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2023-08-30 07:39:24,254 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 55 predicate places. [2023-08-30 07:39:24,254 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 942 flow [2023-08-30 07:39:24,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:24,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:24,255 INFO L208 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] [2023-08-30 07:39:24,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 07:39:24,255 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:24,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1956000212, now seen corresponding path program 8 times [2023-08-30 07:39:24,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:24,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271985659] [2023-08-30 07:39:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:25,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:25,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271985659] [2023-08-30 07:39:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271985659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:39:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434046883] [2023-08-30 07:39:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:25,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:39:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:39:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:39:26,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:39:26,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 942 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:26,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:26,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:39:26,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:33,262 INFO L130 PetriNetUnfolder]: 31847/50874 cut-off events. [2023-08-30 07:39:33,262 INFO L131 PetriNetUnfolder]: For 232988/232988 co-relation queries the response was YES. [2023-08-30 07:39:33,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215648 conditions, 50874 events. 31847/50874 cut-off events. For 232988/232988 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 399798 event pairs, 7945 based on Foata normal form. 1/50875 useless extension candidates. Maximal degree in co-relation 215607. Up to 13538 conditions per place. [2023-08-30 07:39:33,842 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 306 selfloop transitions, 68 changer transitions 10/388 dead transitions. [2023-08-30 07:39:33,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 388 transitions, 3560 flow [2023-08-30 07:39:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:39:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:39:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1801 transitions. [2023-08-30 07:39:33,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46441464672511606 [2023-08-30 07:39:33,848 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1801 transitions. [2023-08-30 07:39:33,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1801 transitions. [2023-08-30 07:39:33,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:33,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1801 transitions. [2023-08-30 07:39:33,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.64285714285714) internal successors, (1801), 14 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:33,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:33,860 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:33,860 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 942 flow. Second operand 14 states and 1801 transitions. [2023-08-30 07:39:33,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 388 transitions, 3560 flow [2023-08-30 07:39:35,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 388 transitions, 3522 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-08-30 07:39:35,452 INFO L231 Difference]: Finished difference. Result has 149 places, 145 transitions, 1694 flow [2023-08-30 07:39:35,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1694, PETRI_PLACES=149, PETRI_TRANSITIONS=145} [2023-08-30 07:39:35,453 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 78 predicate places. [2023-08-30 07:39:35,453 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 145 transitions, 1694 flow [2023-08-30 07:39:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:35,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:39:35,454 INFO L208 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] [2023-08-30 07:39:35,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 07:39:35,455 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:39:35,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:39:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -13354356, now seen corresponding path program 9 times [2023-08-30 07:39:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:39:35,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403266037] [2023-08-30 07:39:35,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:39:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:39:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:39:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:39:36,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:39:36,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403266037] [2023-08-30 07:39:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403266037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:39:36,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:39:36,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:39:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502856041] [2023-08-30 07:39:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:39:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:39:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:39:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:39:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:39:37,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:39:37,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 145 transitions, 1694 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:39:37,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:39:37,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:39:37,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:39:50,360 INFO L130 PetriNetUnfolder]: 52893/87422 cut-off events. [2023-08-30 07:39:50,360 INFO L131 PetriNetUnfolder]: For 728583/728583 co-relation queries the response was YES. [2023-08-30 07:39:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434294 conditions, 87422 events. 52893/87422 cut-off events. For 728583/728583 co-relation queries the response was YES. Maximal size of possible extension queue 3338. Compared 785999 event pairs, 13387 based on Foata normal form. 1/87415 useless extension candidates. Maximal degree in co-relation 434241. Up to 25410 conditions per place. [2023-08-30 07:39:51,468 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 460 selfloop transitions, 69 changer transitions 9/542 dead transitions. [2023-08-30 07:39:51,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 542 transitions, 6910 flow [2023-08-30 07:39:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:39:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:39:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1800 transitions. [2023-08-30 07:39:51,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46415678184631254 [2023-08-30 07:39:51,477 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1800 transitions. [2023-08-30 07:39:51,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1800 transitions. [2023-08-30 07:39:51,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:39:51,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1800 transitions. [2023-08-30 07:39:51,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.57142857142858) internal successors, (1800), 14 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:51,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:51,489 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:39:51,489 INFO L175 Difference]: Start difference. First operand has 149 places, 145 transitions, 1694 flow. Second operand 14 states and 1800 transitions. [2023-08-30 07:39:51,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 542 transitions, 6910 flow [2023-08-30 07:40:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 542 transitions, 6785 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:00,228 INFO L231 Difference]: Finished difference. Result has 171 places, 203 transitions, 2861 flow [2023-08-30 07:40:00,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2861, PETRI_PLACES=171, PETRI_TRANSITIONS=203} [2023-08-30 07:40:00,229 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 100 predicate places. [2023-08-30 07:40:00,229 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 203 transitions, 2861 flow [2023-08-30 07:40:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:40:00,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:00,230 INFO L208 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] [2023-08-30 07:40:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 07:40:00,231 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:40:00,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1553534764, now seen corresponding path program 10 times [2023-08-30 07:40:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:00,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772683413] [2023-08-30 07:40:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:01,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:01,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772683413] [2023-08-30 07:40:01,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772683413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:01,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:01,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:40:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525305758] [2023-08-30 07:40:01,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:01,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:40:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:40:01,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:40:01,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:40:01,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 203 transitions, 2861 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:40:01,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:01,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:40:01,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:19,875 INFO L130 PetriNetUnfolder]: 62075/105030 cut-off events. [2023-08-30 07:40:19,875 INFO L131 PetriNetUnfolder]: For 1167094/1167094 co-relation queries the response was YES. [2023-08-30 07:40:20,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570402 conditions, 105030 events. 62075/105030 cut-off events. For 1167094/1167094 co-relation queries the response was YES. Maximal size of possible extension queue 4199. Compared 998272 event pairs, 19575 based on Foata normal form. 1/105031 useless extension candidates. Maximal degree in co-relation 570338. Up to 42455 conditions per place. [2023-08-30 07:40:21,432 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 431 selfloop transitions, 88 changer transitions 9/532 dead transitions. [2023-08-30 07:40:21,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 532 transitions, 7224 flow [2023-08-30 07:40:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:40:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:40:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1793 transitions. [2023-08-30 07:40:21,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46235172769468796 [2023-08-30 07:40:21,439 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1793 transitions. [2023-08-30 07:40:21,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1793 transitions. [2023-08-30 07:40:21,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:21,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1793 transitions. [2023-08-30 07:40:21,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.07142857142858) internal successors, (1793), 14 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:21,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:21,448 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:21,448 INFO L175 Difference]: Start difference. First operand has 171 places, 203 transitions, 2861 flow. Second operand 14 states and 1793 transitions. [2023-08-30 07:40:21,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 532 transitions, 7224 flow [2023-08-30 07:40:35,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 532 transitions, 7029 flow, removed 89 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:35,825 INFO L231 Difference]: Finished difference. Result has 192 places, 257 transitions, 4007 flow [2023-08-30 07:40:35,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4007, PETRI_PLACES=192, PETRI_TRANSITIONS=257} [2023-08-30 07:40:35,826 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 121 predicate places. [2023-08-30 07:40:35,826 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 257 transitions, 4007 flow [2023-08-30 07:40:35,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:40:35,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:35,827 INFO L208 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] [2023-08-30 07:40:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 07:40:35,827 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:40:35,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1863950844, now seen corresponding path program 11 times [2023-08-30 07:40:35,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:35,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188749309] [2023-08-30 07:40:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:35,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:37,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:37,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188749309] [2023-08-30 07:40:37,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188749309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:37,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:37,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:40:37,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785719941] [2023-08-30 07:40:37,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:37,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:40:37,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:37,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:40:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:40:37,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:40:37,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 257 transitions, 4007 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:40:37,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:37,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:40:37,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:00,490 INFO L130 PetriNetUnfolder]: 71148/124513 cut-off events. [2023-08-30 07:41:00,491 INFO L131 PetriNetUnfolder]: For 1797447/1797447 co-relation queries the response was YES. [2023-08-30 07:41:01,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728579 conditions, 124513 events. 71148/124513 cut-off events. For 1797447/1797447 co-relation queries the response was YES. Maximal size of possible extension queue 5123. Compared 1267981 event pairs, 18333 based on Foata normal form. 1/124514 useless extension candidates. Maximal degree in co-relation 728505. Up to 34150 conditions per place. [2023-08-30 07:41:02,415 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 623 selfloop transitions, 106 changer transitions 11/744 dead transitions. [2023-08-30 07:41:02,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 744 transitions, 11985 flow [2023-08-30 07:41:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:41:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:41:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1803 transitions. [2023-08-30 07:41:02,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46493037648272306 [2023-08-30 07:41:02,419 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1803 transitions. [2023-08-30 07:41:02,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1803 transitions. [2023-08-30 07:41:02,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:02,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1803 transitions. [2023-08-30 07:41:02,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.78571428571428) internal successors, (1803), 14 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,427 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,427 INFO L175 Difference]: Start difference. First operand has 192 places, 257 transitions, 4007 flow. Second operand 14 states and 1803 transitions. [2023-08-30 07:41:02,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 744 transitions, 11985 flow [2023-08-30 07:41:40,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 744 transitions, 11550 flow, removed 205 selfloop flow, removed 2 redundant places. [2023-08-30 07:41:40,823 INFO L231 Difference]: Finished difference. Result has 214 places, 330 transitions, 5537 flow [2023-08-30 07:41:40,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5537, PETRI_PLACES=214, PETRI_TRANSITIONS=330} [2023-08-30 07:41:40,824 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 143 predicate places. [2023-08-30 07:41:40,824 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 330 transitions, 5537 flow [2023-08-30 07:41:40,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:41:40,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:40,825 INFO L208 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] [2023-08-30 07:41:40,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 07:41:40,826 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 07:41:40,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:40,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1273965686, now seen corresponding path program 12 times [2023-08-30 07:41:40,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:40,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082324287] [2023-08-30 07:41:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:40,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082324287] [2023-08-30 07:41:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082324287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 07:41:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977152908] [2023-08-30 07:41:42,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:42,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 07:41:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 07:41:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-30 07:41:42,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 07:41:42,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 330 transitions, 5537 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 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) [2023-08-30 07:41:42,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:42,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 07:41:42,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:42:23,548 INFO L130 PetriNetUnfolder]: 100823/184038 cut-off events. [2023-08-30 07:42:23,549 INFO L131 PetriNetUnfolder]: For 3201318/3201318 co-relation queries the response was YES. [2023-08-30 07:42:26,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135488 conditions, 184038 events. 100823/184038 cut-off events. For 3201318/3201318 co-relation queries the response was YES. Maximal size of possible extension queue 8469. Compared 2073526 event pairs, 28581 based on Foata normal form. 1/184031 useless extension candidates. Maximal degree in co-relation 1135403. Up to 60934 conditions per place. [2023-08-30 07:42:26,633 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 823 selfloop transitions, 157 changer transitions 12/996 dead transitions. [2023-08-30 07:42:26,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 996 transitions, 17511 flow [2023-08-30 07:42:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:42:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:42:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1799 transitions. [2023-08-30 07:42:26,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463898916967509 [2023-08-30 07:42:26,759 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1799 transitions. [2023-08-30 07:42:26,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1799 transitions. [2023-08-30 07:42:26,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:42:26,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1799 transitions. [2023-08-30 07:42:26,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.5) internal successors, (1799), 14 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:26,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:26,767 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:26,767 INFO L175 Difference]: Start difference. First operand has 214 places, 330 transitions, 5537 flow. Second operand 14 states and 1799 transitions. [2023-08-30 07:42:26,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 996 transitions, 17511 flow