./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.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/parallel-misc-3-extended.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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --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 05:43:29,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:43:29,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:43:29,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:43:29,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:43:29,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:43:29,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:43:29,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:43:29,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:43:29,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:43:29,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:43:29,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:43:29,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:43:29,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:43:29,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:43:29,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:43:29,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:43:29,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:43:29,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:43:29,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:43:29,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:43:29,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:43:29,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:43:29,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:43:29,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:43:29,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:43:29,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:43:29,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:43:29,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:43:29,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:43:29,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:43:29,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:43:29,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:43:29,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:43:29,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:43:29,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:43:29,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:43:29,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:43:29,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:43:29,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:43:29,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:43:29,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:43:29,257 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:43:29,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:43:29,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:43:29,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:43:29,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:43:29,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:43:29,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:43:29,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:43:29,261 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:43:29,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:43:29,262 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:43:29,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:43:29,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:43:29,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:43:29,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:43:29,263 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:43:29,263 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:43:29,263 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:43:29,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:43:29,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:43:29,264 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:43:29,264 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:43:29,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:43:29,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:43:29,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:43:29,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:43:29,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:43:29,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:43:29,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:43:29,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:43:29,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:43:29,266 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:43:29,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:43:29,267 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:43:29,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:43:29,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:43:29,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:43:29,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:43:29,637 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:43:29,637 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:43:29,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-08-30 05:43:30,831 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:43:31,073 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:43:31,074 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-08-30 05:43:31,083 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a828f55ef/7224b6ff791d4b8997a743dadf30a604/FLAG1c45d8505 [2023-08-30 05:43:31,108 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a828f55ef/7224b6ff791d4b8997a743dadf30a604 [2023-08-30 05:43:31,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:43:31,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:43:31,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:43:31,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:43:31,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:43:31,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522b5ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31, skipping insertion in model container [2023-08-30 05:43:31,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:43:31,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:43:31,326 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/parallel-misc-3-extended.wvr.c[2856,2869] [2023-08-30 05:43:31,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:43:31,344 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:43:31,385 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/parallel-misc-3-extended.wvr.c[2856,2869] [2023-08-30 05:43:31,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:43:31,396 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:43:31,396 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:43:31,403 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:43:31,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31 WrapperNode [2023-08-30 05:43:31,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:43:31,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:43:31,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:43:31,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:43:31,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,452 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-08-30 05:43:31,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:43:31,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:43:31,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:43:31,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:43:31,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:43:31,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:43:31,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:43:31,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:43:31,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (1/1) ... [2023-08-30 05:43:31,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:43:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:43:31,538 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 05:43:31,565 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 05:43:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:43:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:43:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:43:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:43:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:43:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:43:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:43:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:43:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:43:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:43:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:43:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:43:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:43:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:43:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:43:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:43:31,583 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 05:43:31,697 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:43:31,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:43:31,967 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:43:31,988 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:43:31,989 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 05:43:31,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:43:31 BoogieIcfgContainer [2023-08-30 05:43:31,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:43:31,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:43:31,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:43:31,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:43:31,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:43:31" (1/3) ... [2023-08-30 05:43:31,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666af95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:43:31, skipping insertion in model container [2023-08-30 05:43:31,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:43:31" (2/3) ... [2023-08-30 05:43:31,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666af95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:43:31, skipping insertion in model container [2023-08-30 05:43:31,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:43:31" (3/3) ... [2023-08-30 05:43:31,999 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-08-30 05:43:32,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:43:32,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 05:43:32,015 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:43:32,175 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:43:32,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 143 transitions, 310 flow [2023-08-30 05:43:32,284 INFO L130 PetriNetUnfolder]: 16/140 cut-off events. [2023-08-30 05:43:32,284 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:43:32,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 16/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 189 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-30 05:43:32,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 143 transitions, 310 flow [2023-08-30 05:43:32,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 136 transitions, 290 flow [2023-08-30 05:43:32,314 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:43:32,325 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 136 transitions, 290 flow [2023-08-30 05:43:32,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 136 transitions, 290 flow [2023-08-30 05:43:32,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 136 transitions, 290 flow [2023-08-30 05:43:32,357 INFO L130 PetriNetUnfolder]: 16/136 cut-off events. [2023-08-30 05:43:32,358 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:43:32,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 16/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 189 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-30 05:43:32,362 INFO L119 LiptonReduction]: Number of co-enabled transitions 3888 [2023-08-30 05:43:36,626 INFO L134 LiptonReduction]: Checked pairs total: 3721 [2023-08-30 05:43:36,627 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-30 05:43:36,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:43:36,651 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;@607f115b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:43:36,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 05:43:36,653 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 05:43:36,653 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:43:36,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:36,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:43:36,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:36,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash 589, now seen corresponding path program 1 times [2023-08-30 05:43:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956413554] [2023-08-30 05:43:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:36,762 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 05:43:36,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:36,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956413554] [2023-08-30 05:43:36,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956413554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:36,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:36,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:43:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095975912] [2023-08-30 05:43:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:43:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:36,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:43:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:43:36,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 285 [2023-08-30 05:43:36,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 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 05:43:36,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:36,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 285 [2023-08-30 05:43:36,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:36,891 INFO L130 PetriNetUnfolder]: 169/252 cut-off events. [2023-08-30 05:43:36,892 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 05:43:36,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 252 events. 169/252 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 546 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 380. Up to 253 conditions per place. [2023-08-30 05:43:36,895 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 29 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-30 05:43:36,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 134 flow [2023-08-30 05:43:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:43:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:43:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 292 transitions. [2023-08-30 05:43:36,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2023-08-30 05:43:36,909 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 292 transitions. [2023-08-30 05:43:36,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 292 transitions. [2023-08-30 05:43:36,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:36,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 292 transitions. [2023-08-30 05:43:36,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 146.0) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:36,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 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 05:43:36,921 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 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 05:43:36,923 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 82 flow. Second operand 2 states and 292 transitions. [2023-08-30 05:43:36,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 134 flow [2023-08-30 05:43:36,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:43:36,928 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 64 flow [2023-08-30 05:43:36,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-08-30 05:43:36,932 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 05:43:36,933 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 64 flow [2023-08-30 05:43:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 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 05:43:36,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:36,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:43:36,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:43:36,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:36,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:36,939 INFO L85 PathProgramCache]: Analyzing trace with hash 577311, now seen corresponding path program 1 times [2023-08-30 05:43:36,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:36,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329897785] [2023-08-30 05:43:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:36,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:37,162 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 05:43:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:37,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329897785] [2023-08-30 05:43:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329897785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:37,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:37,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:43:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268685549] [2023-08-30 05:43:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:37,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:37,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 285 [2023-08-30 05:43:37,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 05:43:37,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:37,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 285 [2023-08-30 05:43:37,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:37,305 INFO L130 PetriNetUnfolder]: 159/236 cut-off events. [2023-08-30 05:43:37,306 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:43:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 236 events. 159/236 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 501 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 479. Up to 236 conditions per place. [2023-08-30 05:43:37,307 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 05:43:37,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 114 flow [2023-08-30 05:43:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-30 05:43:37,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45497076023391814 [2023-08-30 05:43:37,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-30 05:43:37,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-30 05:43:37,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:37,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-30 05:43:37,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 05:43:37,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:37,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:37,321 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 64 flow. Second operand 3 states and 389 transitions. [2023-08-30 05:43:37,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 114 flow [2023-08-30 05:43:37,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:43:37,322 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 62 flow [2023-08-30 05:43:37,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-30 05:43:37,323 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 05:43:37,324 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 62 flow [2023-08-30 05:43:37,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 05:43:37,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:37,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:43:37,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:43:37,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:37,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:37,326 INFO L85 PathProgramCache]: Analyzing trace with hash 577312, now seen corresponding path program 1 times [2023-08-30 05:43:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:37,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943839922] [2023-08-30 05:43:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:37,479 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 05:43:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943839922] [2023-08-30 05:43:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943839922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:37,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:37,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:43:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99618720] [2023-08-30 05:43:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:37,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:37,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:37,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 285 [2023-08-30 05:43:37,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 05:43:37,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:37,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 285 [2023-08-30 05:43:37,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:37,580 INFO L130 PetriNetUnfolder]: 149/220 cut-off events. [2023-08-30 05:43:37,580 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:43:37,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 220 events. 149/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 460 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 448. Up to 220 conditions per place. [2023-08-30 05:43:37,584 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-30 05:43:37,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 108 flow [2023-08-30 05:43:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-30 05:43:37,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47017543859649125 [2023-08-30 05:43:37,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-30 05:43:37,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-30 05:43:37,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:37,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-30 05:43:37,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 05:43:37,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:37,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:37,591 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 62 flow. Second operand 3 states and 402 transitions. [2023-08-30 05:43:37,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 108 flow [2023-08-30 05:43:37,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:37,593 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 59 flow [2023-08-30 05:43:37,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-30 05:43:37,594 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 05:43:37,597 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 59 flow [2023-08-30 05:43:37,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 05:43:37,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:37,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:43:37,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:43:37,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:37,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 554808244, now seen corresponding path program 1 times [2023-08-30 05:43:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074325397] [2023-08-30 05:43:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:37,717 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 05:43:37,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:37,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074325397] [2023-08-30 05:43:37,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074325397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:37,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:37,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:43:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332406728] [2023-08-30 05:43:37,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:37,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:37,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:37,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:37,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 285 [2023-08-30 05:43:37,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 05:43:37,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:37,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 285 [2023-08-30 05:43:37,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:37,832 INFO L130 PetriNetUnfolder]: 139/204 cut-off events. [2023-08-30 05:43:37,832 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:43:37,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 204 events. 139/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 412 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 417. Up to 204 conditions per place. [2023-08-30 05:43:37,835 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-30 05:43:37,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 101 flow [2023-08-30 05:43:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 05:43:37,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2023-08-30 05:43:37,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 05:43:37,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 05:43:37,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:37,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 05:43:37,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 05:43:37,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:37,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:37,845 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 400 transitions. [2023-08-30 05:43:37,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 101 flow [2023-08-30 05:43:37,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:37,847 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 56 flow [2023-08-30 05:43:37,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-30 05:43:37,849 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-30 05:43:37,849 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 56 flow [2023-08-30 05:43:37,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 05:43:37,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:37,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:43:37,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:43:37,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:37,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash 554808243, now seen corresponding path program 1 times [2023-08-30 05:43:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:37,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473426529] [2023-08-30 05:43:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:37,912 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 05:43:37,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:37,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473426529] [2023-08-30 05:43:37,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473426529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:37,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:37,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:43:37,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060616089] [2023-08-30 05:43:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:37,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 285 [2023-08-30 05:43:37,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 05:43:37,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:37,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 285 [2023-08-30 05:43:37,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:38,007 INFO L130 PetriNetUnfolder]: 129/188 cut-off events. [2023-08-30 05:43:38,007 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:43:38,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 188 events. 129/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 363 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 386. Up to 188 conditions per place. [2023-08-30 05:43:38,009 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 20 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-08-30 05:43:38,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 94 flow [2023-08-30 05:43:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-30 05:43:38,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.447953216374269 [2023-08-30 05:43:38,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-30 05:43:38,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-30 05:43:38,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:38,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-30 05:43:38,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,015 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 56 flow. Second operand 3 states and 383 transitions. [2023-08-30 05:43:38,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 94 flow [2023-08-30 05:43:38,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:38,016 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 53 flow [2023-08-30 05:43:38,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-30 05:43:38,017 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:43:38,017 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 53 flow [2023-08-30 05:43:38,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 05:43:38,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:38,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:38,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:43:38,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:38,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash 594789108, now seen corresponding path program 1 times [2023-08-30 05:43:38,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:38,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302509079] [2023-08-30 05:43:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:38,123 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 05:43:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302509079] [2023-08-30 05:43:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302509079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:38,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:38,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:43:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885117504] [2023-08-30 05:43:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:43:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:43:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:43:38,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 285 [2023-08-30 05:43:38,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 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 05:43:38,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:38,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 285 [2023-08-30 05:43:38,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:38,241 INFO L130 PetriNetUnfolder]: 105/156 cut-off events. [2023-08-30 05:43:38,242 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:43:38,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 156 events. 105/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 278 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 323. Up to 156 conditions per place. [2023-08-30 05:43:38,243 INFO L137 encePairwiseOnDemand]: 283/285 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-30 05:43:38,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 91 flow [2023-08-30 05:43:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-30 05:43:38,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41754385964912283 [2023-08-30 05:43:38,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-30 05:43:38,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-30 05:43:38,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:38,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-30 05:43:38,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 05:43:38,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,250 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 53 flow. Second operand 3 states and 357 transitions. [2023-08-30 05:43:38,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 91 flow [2023-08-30 05:43:38,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:38,251 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 52 flow [2023-08-30 05:43:38,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-30 05:43:38,252 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:43:38,252 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 52 flow [2023-08-30 05:43:38,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 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 05:43:38,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:38,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:38,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:43:38,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:38,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 594789109, now seen corresponding path program 1 times [2023-08-30 05:43:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517020794] [2023-08-30 05:43:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:38,361 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 05:43:38,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517020794] [2023-08-30 05:43:38,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517020794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:38,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:38,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:43:38,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295136874] [2023-08-30 05:43:38,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:38,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:38,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:38,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 285 [2023-08-30 05:43:38,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:38,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 285 [2023-08-30 05:43:38,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:38,438 INFO L130 PetriNetUnfolder]: 81/124 cut-off events. [2023-08-30 05:43:38,438 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:43:38,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 124 events. 81/124 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 195 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 260. Up to 124 conditions per place. [2023-08-30 05:43:38,439 INFO L137 encePairwiseOnDemand]: 283/285 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 05:43:38,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 88 flow [2023-08-30 05:43:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-30 05:43:38,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2023-08-30 05:43:38,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-30 05:43:38,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-30 05:43:38,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:38,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-30 05:43:38,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 05:43:38,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,446 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 52 flow. Second operand 3 states and 395 transitions. [2023-08-30 05:43:38,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 88 flow [2023-08-30 05:43:38,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:38,447 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 51 flow [2023-08-30 05:43:38,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-30 05:43:38,448 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:43:38,448 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 51 flow [2023-08-30 05:43:38,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:38,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:38,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:43:38,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:38,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1438965518, now seen corresponding path program 1 times [2023-08-30 05:43:38,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:38,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121167270] [2023-08-30 05:43:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:38,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:38,539 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 05:43:38,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121167270] [2023-08-30 05:43:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121167270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:38,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:43:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641564396] [2023-08-30 05:43:38,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:38,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:38,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:38,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 285 [2023-08-30 05:43:38,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 51 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 05:43:38,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:38,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 285 [2023-08-30 05:43:38,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:38,595 INFO L130 PetriNetUnfolder]: 111/168 cut-off events. [2023-08-30 05:43:38,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:43:38,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 168 events. 111/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 359 event pairs, 7 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 352. Up to 137 conditions per place. [2023-08-30 05:43:38,597 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-30 05:43:38,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 131 flow [2023-08-30 05:43:38,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-30 05:43:38,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2023-08-30 05:43:38,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:38,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 05:43:38,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,603 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 51 flow. Second operand 3 states and 408 transitions. [2023-08-30 05:43:38,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 131 flow [2023-08-30 05:43:38,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:38,604 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 62 flow [2023-08-30 05:43:38,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-30 05:43:38,607 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 05:43:38,607 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 62 flow [2023-08-30 05:43:38,607 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 05:43:38,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:38,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:38,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:43:38,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:38,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash -485828537, now seen corresponding path program 1 times [2023-08-30 05:43:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:38,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711885552] [2023-08-30 05:43:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:43:38,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:38,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711885552] [2023-08-30 05:43:38,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711885552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:38,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:38,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:43:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267579229] [2023-08-30 05:43:38,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:38,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:38,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 285 [2023-08-30 05:43:38,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 05:43:38,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:38,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 285 [2023-08-30 05:43:38,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:38,744 INFO L130 PetriNetUnfolder]: 161/240 cut-off events. [2023-08-30 05:43:38,744 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 05:43:38,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 240 events. 161/240 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 584 event pairs, 19 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 580. Up to 177 conditions per place. [2023-08-30 05:43:38,746 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 05:43:38,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 155 flow [2023-08-30 05:43:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-30 05:43:38,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2023-08-30 05:43:38,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:38,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 05:43:38,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,751 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 62 flow. Second operand 3 states and 408 transitions. [2023-08-30 05:43:38,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 155 flow [2023-08-30 05:43:38,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:38,753 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 72 flow [2023-08-30 05:43:38,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-30 05:43:38,754 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-30 05:43:38,754 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 72 flow [2023-08-30 05:43:38,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 05:43:38,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:38,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:38,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:43:38,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:38,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:38,755 INFO L85 PathProgramCache]: Analyzing trace with hash 902632079, now seen corresponding path program 1 times [2023-08-30 05:43:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766518862] [2023-08-30 05:43:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:38,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:43:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766518862] [2023-08-30 05:43:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766518862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:43:38,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:43:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:43:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550699392] [2023-08-30 05:43:38,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:43:38,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:43:38,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:43:38,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:43:38,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 285 [2023-08-30 05:43:38,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 05:43:38,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:38,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 285 [2023-08-30 05:43:38,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:38,911 INFO L130 PetriNetUnfolder]: 220/325 cut-off events. [2023-08-30 05:43:38,911 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 05:43:38,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 325 events. 220/325 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 799 event pairs, 48 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 869. Up to 199 conditions per place. [2023-08-30 05:43:38,913 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 05:43:38,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 177 flow [2023-08-30 05:43:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:43:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:43:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-30 05:43:38,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2023-08-30 05:43:38,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:38,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-30 05:43:38,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 05:43:38,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:38,921 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 72 flow. Second operand 3 states and 408 transitions. [2023-08-30 05:43:38,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 177 flow [2023-08-30 05:43:38,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:38,922 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 82 flow [2023-08-30 05:43:38,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-08-30 05:43:38,924 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 05:43:38,924 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 82 flow [2023-08-30 05:43:38,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 05:43:38,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:38,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:38,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:43:38,926 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:38,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1086789852, now seen corresponding path program 1 times [2023-08-30 05:43:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:38,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735958274] [2023-08-30 05:43:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:38,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:43:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:39,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735958274] [2023-08-30 05:43:39,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735958274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:43:39,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210555950] [2023-08-30 05:43:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:39,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:39,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:43:39,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:43:39,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 05:43:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:39,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 05:43:39,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:43:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:43:39,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:43:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:43:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210555950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:43:39,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:43:39,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 05:43:39,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586539596] [2023-08-30 05:43:39,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:43:39,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:43:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:43:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:43:40,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 285 [2023-08-30 05:43:40,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 82 flow. Second operand has 8 states, 8 states have (on average 116.875) internal successors, (935), 8 states have internal predecessors, (935), 0 states have call successors, (0), 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 05:43:40,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:40,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 285 [2023-08-30 05:43:40,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:40,153 INFO L130 PetriNetUnfolder]: 279/410 cut-off events. [2023-08-30 05:43:40,154 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2023-08-30 05:43:40,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 410 events. 279/410 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1159 event pairs, 6 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 1192. Up to 153 conditions per place. [2023-08-30 05:43:40,157 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 58 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2023-08-30 05:43:40,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 66 transitions, 365 flow [2023-08-30 05:43:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:43:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:43:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2023-08-30 05:43:40,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42656641604010026 [2023-08-30 05:43:40,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2023-08-30 05:43:40,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2023-08-30 05:43:40,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:40,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2023-08-30 05:43:40,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 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 05:43:40,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:40,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:43:40,167 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 82 flow. Second operand 7 states and 851 transitions. [2023-08-30 05:43:40,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 66 transitions, 365 flow [2023-08-30 05:43:40,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 66 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:40,172 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 128 flow [2023-08-30 05:43:40,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-08-30 05:43:40,172 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-30 05:43:40,173 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 128 flow [2023-08-30 05:43:40,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.875) internal successors, (935), 8 states have internal predecessors, (935), 0 states have call successors, (0), 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 05:43:40,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:40,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:40,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 05:43:40,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 05:43:40,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:40,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1899131191, now seen corresponding path program 2 times [2023-08-30 05:43:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:40,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071526215] [2023-08-30 05:43:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 05:43:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:40,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071526215] [2023-08-30 05:43:40,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071526215] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:43:40,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717027240] [2023-08-30 05:43:40,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:43:40,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:40,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:43:40,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:43:40,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 05:43:40,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:43:40,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:43:40,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 05:43:40,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:43:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:43:40,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:43:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:43:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717027240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:43:41,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:43:41,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-08-30 05:43:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796389684] [2023-08-30 05:43:41,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:43:41,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:43:41,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:41,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:43:41,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:43:41,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 285 [2023-08-30 05:43:41,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 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 05:43:41,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:41,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 285 [2023-08-30 05:43:41,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:41,785 INFO L130 PetriNetUnfolder]: 543/790 cut-off events. [2023-08-30 05:43:41,785 INFO L131 PetriNetUnfolder]: For 738/738 co-relation queries the response was YES. [2023-08-30 05:43:41,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 790 events. 543/790 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2518 event pairs, 0 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 2513. Up to 225 conditions per place. [2023-08-30 05:43:41,791 INFO L137 encePairwiseOnDemand]: 278/285 looper letters, 144 selfloop transitions, 48 changer transitions 0/192 dead transitions. [2023-08-30 05:43:41,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 192 transitions, 1158 flow [2023-08-30 05:43:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 05:43:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 05:43:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2469 transitions. [2023-08-30 05:43:41,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937799043062201 [2023-08-30 05:43:41,800 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2469 transitions. [2023-08-30 05:43:41,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2469 transitions. [2023-08-30 05:43:41,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:41,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2469 transitions. [2023-08-30 05:43:41,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.22727272727273) internal successors, (2469), 22 states have internal predecessors, (2469), 0 states have call successors, (0), 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 05:43:41,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 285.0) internal successors, (6555), 23 states have internal predecessors, (6555), 0 states have call successors, (0), 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 05:43:41,819 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 285.0) internal successors, (6555), 23 states have internal predecessors, (6555), 0 states have call successors, (0), 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 05:43:41,819 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 128 flow. Second operand 22 states and 2469 transitions. [2023-08-30 05:43:41,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 192 transitions, 1158 flow [2023-08-30 05:43:41,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 192 transitions, 1018 flow, removed 57 selfloop flow, removed 2 redundant places. [2023-08-30 05:43:41,828 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 507 flow [2023-08-30 05:43:41,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=507, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-30 05:43:41,830 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2023-08-30 05:43:41,830 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 507 flow [2023-08-30 05:43:41,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 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 05:43:41,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:41,831 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:41,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:43:42,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 05:43:42,038 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:42,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1750624502, now seen corresponding path program 3 times [2023-08-30 05:43:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:42,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963297308] [2023-08-30 05:43:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:42,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:43,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963297308] [2023-08-30 05:43:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963297308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:43:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445975964] [2023-08-30 05:43:43,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:43:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:43:43,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:43:43,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 05:43:43,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:43:43,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:43:43,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 05:43:43,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:43:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:43,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:43:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:43:45,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445975964] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:43:45,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:43:45,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-08-30 05:43:45,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44839869] [2023-08-30 05:43:45,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:43:45,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:43:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:45,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:43:45,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:43:45,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 285 [2023-08-30 05:43:45,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 507 flow. Second operand has 25 states, 25 states have (on average 92.44) internal successors, (2311), 25 states have internal predecessors, (2311), 0 states have call successors, (0), 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 05:43:45,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:45,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 285 [2023-08-30 05:43:45,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:50,713 INFO L130 PetriNetUnfolder]: 3866/5819 cut-off events. [2023-08-30 05:43:50,713 INFO L131 PetriNetUnfolder]: For 26710/26710 co-relation queries the response was YES. [2023-08-30 05:43:50,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28650 conditions, 5819 events. 3866/5819 cut-off events. For 26710/26710 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 30959 event pairs, 2 based on Foata normal form. 24/5085 useless extension candidates. Maximal degree in co-relation 28631. Up to 1681 conditions per place. [2023-08-30 05:43:50,769 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 405 selfloop transitions, 550 changer transitions 92/1047 dead transitions. [2023-08-30 05:43:50,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 1047 transitions, 8579 flow [2023-08-30 05:43:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-08-30 05:43:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-08-30 05:43:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 7800 transitions. [2023-08-30 05:43:50,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346435709526982 [2023-08-30 05:43:50,789 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 7800 transitions. [2023-08-30 05:43:50,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 7800 transitions. [2023-08-30 05:43:50,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:50,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 7800 transitions. [2023-08-30 05:43:50,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 98.73417721518987) internal successors, (7800), 79 states have internal predecessors, (7800), 0 states have call successors, (0), 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 05:43:50,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 285.0) internal successors, (22800), 80 states have internal predecessors, (22800), 0 states have call successors, (0), 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 05:43:50,856 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 285.0) internal successors, (22800), 80 states have internal predecessors, (22800), 0 states have call successors, (0), 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 05:43:50,856 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 507 flow. Second operand 79 states and 7800 transitions. [2023-08-30 05:43:50,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 1047 transitions, 8579 flow [2023-08-30 05:43:50,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 1047 transitions, 7390 flow, removed 496 selfloop flow, removed 5 redundant places. [2023-08-30 05:43:50,992 INFO L231 Difference]: Finished difference. Result has 154 places, 648 transitions, 5505 flow [2023-08-30 05:43:50,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=5505, PETRI_PLACES=154, PETRI_TRANSITIONS=648} [2023-08-30 05:43:50,993 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 115 predicate places. [2023-08-30 05:43:50,993 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 648 transitions, 5505 flow [2023-08-30 05:43:50,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 92.44) internal successors, (2311), 25 states have internal predecessors, (2311), 0 states have call successors, (0), 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 05:43:50,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:50,995 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:51,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 05:43:51,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:51,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:43:51,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1859784356, now seen corresponding path program 4 times [2023-08-30 05:43:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:51,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256517551] [2023-08-30 05:43:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:51,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256517551] [2023-08-30 05:43:52,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256517551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:43:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850008793] [2023-08-30 05:43:52,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:43:52,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:52,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:43:52,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:43:52,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 05:43:52,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:43:52,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:43:52,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 05:43:52,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:43:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:52,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:43:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850008793] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:43:54,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:43:54,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-30 05:43:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822532838] [2023-08-30 05:43:54,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:43:54,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 05:43:54,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 05:43:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-08-30 05:43:54,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 285 [2023-08-30 05:43:54,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 648 transitions, 5505 flow. Second operand has 23 states, 23 states have (on average 92.21739130434783) internal successors, (2121), 23 states have internal predecessors, (2121), 0 states have call successors, (0), 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 05:43:54,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:54,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 285 [2023-08-30 05:43:54,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:00,807 INFO L130 PetriNetUnfolder]: 11499/16831 cut-off events. [2023-08-30 05:44:00,807 INFO L131 PetriNetUnfolder]: For 87247/87247 co-relation queries the response was YES. [2023-08-30 05:44:00,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94544 conditions, 16831 events. 11499/16831 cut-off events. For 87247/87247 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 101121 event pairs, 46 based on Foata normal form. 70/14713 useless extension candidates. Maximal degree in co-relation 94516. Up to 5161 conditions per place. [2023-08-30 05:44:00,975 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 616 selfloop transitions, 1958 changer transitions 68/2642 dead transitions. [2023-08-30 05:44:00,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 2642 transitions, 28317 flow [2023-08-30 05:44:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-30 05:44:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-30 05:44:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5972 transitions. [2023-08-30 05:44:00,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34923976608187135 [2023-08-30 05:44:00,987 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5972 transitions. [2023-08-30 05:44:00,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5972 transitions. [2023-08-30 05:44:00,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:00,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5972 transitions. [2023-08-30 05:44:01,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 99.53333333333333) internal successors, (5972), 60 states have internal predecessors, (5972), 0 states have call successors, (0), 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 05:44:01,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 285.0) internal successors, (17385), 61 states have internal predecessors, (17385), 0 states have call successors, (0), 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 05:44:01,025 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 285.0) internal successors, (17385), 61 states have internal predecessors, (17385), 0 states have call successors, (0), 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 05:44:01,025 INFO L175 Difference]: Start difference. First operand has 154 places, 648 transitions, 5505 flow. Second operand 60 states and 5972 transitions. [2023-08-30 05:44:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 2642 transitions, 28317 flow [2023-08-30 05:44:02,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 2642 transitions, 23307 flow, removed 2501 selfloop flow, removed 4 redundant places. [2023-08-30 05:44:02,697 INFO L231 Difference]: Finished difference. Result has 226 places, 2249 transitions, 23189 flow [2023-08-30 05:44:02,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=4253, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=23189, PETRI_PLACES=226, PETRI_TRANSITIONS=2249} [2023-08-30 05:44:02,698 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 187 predicate places. [2023-08-30 05:44:02,698 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 2249 transitions, 23189 flow [2023-08-30 05:44:02,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 92.21739130434783) internal successors, (2121), 23 states have internal predecessors, (2121), 0 states have call successors, (0), 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 05:44:02,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:02,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:02,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:02,905 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:02,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1323866154, now seen corresponding path program 5 times [2023-08-30 05:44:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:02,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750094920] [2023-08-30 05:44:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:03,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750094920] [2023-08-30 05:44:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750094920] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099888821] [2023-08-30 05:44:03,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:44:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:03,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:03,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:03,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 05:44:03,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:44:03,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:03,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 05:44:03,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:04,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099888821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:05,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:05,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 18 [2023-08-30 05:44:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495194488] [2023-08-30 05:44:05,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:05,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 05:44:05,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 05:44:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-08-30 05:44:05,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 285 [2023-08-30 05:44:05,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 2249 transitions, 23189 flow. Second operand has 20 states, 20 states have (on average 92.9) internal successors, (1858), 20 states have internal predecessors, (1858), 0 states have call successors, (0), 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 05:44:05,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:05,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 285 [2023-08-30 05:44:05,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:16,379 INFO L130 PetriNetUnfolder]: 17552/26070 cut-off events. [2023-08-30 05:44:16,379 INFO L131 PetriNetUnfolder]: For 155073/155073 co-relation queries the response was YES. [2023-08-30 05:44:16,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151796 conditions, 26070 events. 17552/26070 cut-off events. For 155073/155073 co-relation queries the response was YES. Maximal size of possible extension queue 1353. Compared 171628 event pairs, 194 based on Foata normal form. 180/25660 useless extension candidates. Maximal degree in co-relation 151750. Up to 6279 conditions per place. [2023-08-30 05:44:16,697 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 1265 selfloop transitions, 3351 changer transitions 235/4851 dead transitions. [2023-08-30 05:44:16,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 4851 transitions, 61589 flow [2023-08-30 05:44:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-08-30 05:44:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-08-30 05:44:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 6315 transitions. [2023-08-30 05:44:16,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408906882591093 [2023-08-30 05:44:16,713 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 6315 transitions. [2023-08-30 05:44:16,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 6315 transitions. [2023-08-30 05:44:16,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:16,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 6315 transitions. [2023-08-30 05:44:16,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 97.15384615384616) internal successors, (6315), 65 states have internal predecessors, (6315), 0 states have call successors, (0), 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 05:44:16,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 285.0) internal successors, (18810), 66 states have internal predecessors, (18810), 0 states have call successors, (0), 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 05:44:16,750 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 285.0) internal successors, (18810), 66 states have internal predecessors, (18810), 0 states have call successors, (0), 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 05:44:16,751 INFO L175 Difference]: Start difference. First operand has 226 places, 2249 transitions, 23189 flow. Second operand 65 states and 6315 transitions. [2023-08-30 05:44:16,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 4851 transitions, 61589 flow [2023-08-30 05:44:26,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 4851 transitions, 57164 flow, removed 2193 selfloop flow, removed 8 redundant places. [2023-08-30 05:44:26,584 INFO L231 Difference]: Finished difference. Result has 316 places, 4300 transitions, 57347 flow [2023-08-30 05:44:26,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=21376, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1591, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=57347, PETRI_PLACES=316, PETRI_TRANSITIONS=4300} [2023-08-30 05:44:26,587 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 277 predicate places. [2023-08-30 05:44:26,587 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 4300 transitions, 57347 flow [2023-08-30 05:44:26,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 92.9) internal successors, (1858), 20 states have internal predecessors, (1858), 0 states have call successors, (0), 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 05:44:26,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:26,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:26,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:26,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 05:44:26,793 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:26,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1749626504, now seen corresponding path program 6 times [2023-08-30 05:44:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:26,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646148240] [2023-08-30 05:44:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:26,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:27,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646148240] [2023-08-30 05:44:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646148240] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428382836] [2023-08-30 05:44:27,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:44:27,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:27,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:27,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 05:44:27,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:44:27,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:27,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 05:44:27,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:28,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428382836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:29,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:29,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-08-30 05:44:29,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900174482] [2023-08-30 05:44:29,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:29,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 05:44:29,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:29,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 05:44:29,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-08-30 05:44:30,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 285 [2023-08-30 05:44:30,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 4300 transitions, 57347 flow. Second operand has 24 states, 24 states have (on average 92.58333333333333) internal successors, (2222), 24 states have internal predecessors, (2222), 0 states have call successors, (0), 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 05:44:30,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:30,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 285 [2023-08-30 05:44:30,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:06,219 INFO L130 PetriNetUnfolder]: 29055/42872 cut-off events. [2023-08-30 05:45:06,219 INFO L131 PetriNetUnfolder]: For 320789/320789 co-relation queries the response was YES. [2023-08-30 05:45:06,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289932 conditions, 42872 events. 29055/42872 cut-off events. For 320789/320789 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 297965 event pairs, 158 based on Foata normal form. 192/43064 useless extension candidates. Maximal degree in co-relation 289853. Up to 12383 conditions per place. [2023-08-30 05:45:07,186 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 1430 selfloop transitions, 7557 changer transitions 212/9199 dead transitions. [2023-08-30 05:45:07,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 9199 transitions, 141672 flow [2023-08-30 05:45:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-08-30 05:45:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2023-08-30 05:45:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 12074 transitions. [2023-08-30 05:45:07,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34165251839275607 [2023-08-30 05:45:07,203 INFO L72 ComplementDD]: Start complementDD. Operand 124 states and 12074 transitions. [2023-08-30 05:45:07,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 12074 transitions. [2023-08-30 05:45:07,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:07,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 124 states and 12074 transitions. [2023-08-30 05:45:07,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 125 states, 124 states have (on average 97.37096774193549) internal successors, (12074), 124 states have internal predecessors, (12074), 0 states have call successors, (0), 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 05:45:07,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 125 states, 125 states have (on average 285.0) internal successors, (35625), 125 states have internal predecessors, (35625), 0 states have call successors, (0), 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 05:45:07,264 INFO L81 ComplementDD]: Finished complementDD. Result has 125 states, 125 states have (on average 285.0) internal successors, (35625), 125 states have internal predecessors, (35625), 0 states have call successors, (0), 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 05:45:07,264 INFO L175 Difference]: Start difference. First operand has 316 places, 4300 transitions, 57347 flow. Second operand 124 states and 12074 transitions. [2023-08-30 05:45:07,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 9199 transitions, 141672 flow [2023-08-30 05:45:52,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 9199 transitions, 135419 flow, removed 3002 selfloop flow, removed 14 redundant places. [2023-08-30 05:45:52,490 INFO L231 Difference]: Finished difference. Result has 465 places, 8503 transitions, 138729 flow [2023-08-30 05:45:52,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=53434, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3792, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=124, PETRI_FLOW=138729, PETRI_PLACES=465, PETRI_TRANSITIONS=8503} [2023-08-30 05:45:52,495 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 426 predicate places. [2023-08-30 05:45:52,495 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 8503 transitions, 138729 flow [2023-08-30 05:45:52,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 92.58333333333333) internal successors, (2222), 24 states have internal predecessors, (2222), 0 states have call successors, (0), 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 05:45:52,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:52,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:52,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 05:45:52,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 05:45:52,703 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:52,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1065329082, now seen corresponding path program 7 times [2023-08-30 05:45:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:52,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991543625] [2023-08-30 05:45:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:52,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:53,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991543625] [2023-08-30 05:45:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991543625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165622441] [2023-08-30 05:45:53,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:45:53,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:53,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:53,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:53,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 05:45:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:53,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 05:45:53,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:53,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165622441] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:55,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-08-30 05:45:55,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911957525] [2023-08-30 05:45:55,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:55,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:45:55,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:45:55,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:45:55,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 285 [2023-08-30 05:45:55,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 8503 transitions, 138729 flow. Second operand has 25 states, 25 states have (on average 93.08) internal successors, (2327), 25 states have internal predecessors, (2327), 0 states have call successors, (0), 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 05:45:55,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:55,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 285 [2023-08-30 05:45:55,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:47:52,572 INFO L130 PetriNetUnfolder]: 40893/59568 cut-off events. [2023-08-30 05:47:52,572 INFO L131 PetriNetUnfolder]: For 557187/557187 co-relation queries the response was YES. [2023-08-30 05:47:53,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469940 conditions, 59568 events. 40893/59568 cut-off events. For 557187/557187 co-relation queries the response was YES. Maximal size of possible extension queue 3312. Compared 423252 event pairs, 1430 based on Foata normal form. 91/59659 useless extension candidates. Maximal degree in co-relation 469825. Up to 22164 conditions per place. [2023-08-30 05:47:54,177 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 4968 selfloop transitions, 9641 changer transitions 101/14710 dead transitions. [2023-08-30 05:47:54,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 14710 transitions, 271642 flow [2023-08-30 05:47:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-08-30 05:47:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2023-08-30 05:47:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 11891 transitions. [2023-08-30 05:47:54,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3392098131507631 [2023-08-30 05:47:54,192 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 11891 transitions. [2023-08-30 05:47:54,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 11891 transitions. [2023-08-30 05:47:54,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:47:54,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 11891 transitions. [2023-08-30 05:47:54,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 96.67479674796748) internal successors, (11891), 123 states have internal predecessors, (11891), 0 states have call successors, (0), 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 05:47:54,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 285.0) internal successors, (35340), 124 states have internal predecessors, (35340), 0 states have call successors, (0), 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 05:47:54,246 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 285.0) internal successors, (35340), 124 states have internal predecessors, (35340), 0 states have call successors, (0), 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 05:47:54,246 INFO L175 Difference]: Start difference. First operand has 465 places, 8503 transitions, 138729 flow. Second operand 123 states and 11891 transitions. [2023-08-30 05:47:54,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 14710 transitions, 271642 flow [2023-08-30 05:50:56,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 14710 transitions, 251467 flow, removed 9914 selfloop flow, removed 10 redundant places. [2023-08-30 05:50:56,345 INFO L231 Difference]: Finished difference. Result has 636 places, 14196 transitions, 255405 flow [2023-08-30 05:50:56,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=127254, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3096, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=255405, PETRI_PLACES=636, PETRI_TRANSITIONS=14196} [2023-08-30 05:50:56,352 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 597 predicate places. [2023-08-30 05:50:56,352 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 14196 transitions, 255405 flow [2023-08-30 05:50:56,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 93.08) internal successors, (2327), 25 states have internal predecessors, (2327), 0 states have call successors, (0), 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 05:50:56,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:50:56,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:50:56,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 05:50:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:56,555 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:50:56,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:50:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1554135876, now seen corresponding path program 8 times [2023-08-30 05:50:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:50:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023812210] [2023-08-30 05:50:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:50:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:50:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:50:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:50:57,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023812210] [2023-08-30 05:50:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023812210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:50:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884932219] [2023-08-30 05:50:57,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:50:57,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:50:57,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:50:57,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 05:50:57,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:50:57,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:50:57,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 05:50:57,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:50:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:57,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:50:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:59,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884932219] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:50:59,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:50:59,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-08-30 05:50:59,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493954412] [2023-08-30 05:50:59,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:50:59,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:50:59,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:50:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:50:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:50:59,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 285 [2023-08-30 05:50:59,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 14196 transitions, 255405 flow. Second operand has 25 states, 25 states have (on average 92.24) internal successors, (2306), 25 states have internal predecessors, (2306), 0 states have call successors, (0), 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 05:50:59,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:50:59,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 285 [2023-08-30 05:50:59,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15