./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:40:39,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:40:39,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:40:39,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:40:39,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:40:39,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:40:39,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:40:39,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:40:39,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:40:39,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:40:39,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:40:39,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:40:39,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:40:39,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:40:39,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:40:39,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:40:39,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:40:39,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:40:39,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:40:39,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:40:39,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:40:39,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:40:39,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:40:39,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:40:39,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:40:39,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:40:39,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:40:39,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:40:39,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:40:39,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:40:39,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:40:39,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:40:39,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:40:39,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:40:39,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:40:39,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:40:39,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:40:39,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:40:39,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:40:39,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:40:39,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:40:39,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:40:39,203 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:40:39,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:40:39,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:40:39,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:40:39,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:40:39,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:40:39,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:40:39,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:40:39,206 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:40:39,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:40:39,207 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:40:39,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:40:39,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:40:39,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:40:39,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:40:39,208 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:40:39,208 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:40:39,208 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:40:39,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:40:39,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:40:39,208 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:40:39,209 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:40:39,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:40:39,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:40:39,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:40:39,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:40:39,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:40:39,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:40:39,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:40:39,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:40:39,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:40:39,210 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:40:39,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:40:39,210 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:40:39,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:40:39,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:40:39,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:40:39,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:40:39,438 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:40:39,438 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:40:39,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 07:40:40,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:40:40,563 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:40:40,564 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 07:40:40,572 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1a68523/9f57f5e8277c4a1fa483139d598365df/FLAG26ea8cdbb [2023-08-30 07:40:40,584 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1a68523/9f57f5e8277c4a1fa483139d598365df [2023-08-30 07:40:40,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:40:40,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:40:40,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:40:40,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:40:40,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:40:40,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ae9991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40, skipping insertion in model container [2023-08-30 07:40:40,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:40:40,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:40:40,740 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-08-30 07:40:40,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:40:40,751 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:40:40,771 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-08-30 07:40:40,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:40:40,781 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:40:40,781 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:40:40,785 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:40:40,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40 WrapperNode [2023-08-30 07:40:40,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:40:40,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:40:40,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:40:40,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:40:40,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,818 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-08-30 07:40:40,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:40:40,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:40:40,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:40:40,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:40:40,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:40:40,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:40:40,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:40:40,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:40:40,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (1/1) ... [2023-08-30 07:40:40,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:40:40,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:40,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 07:40:40,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 07:40:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:40:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:40:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:40:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:40:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:40:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 07:40:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:40:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 07:40:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 07:40:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 07:40:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:40:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:40:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 07:40:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:40:40,950 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 07:40:41,030 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:40:41,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:40:41,253 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:40:41,258 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:40:41,258 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 07:40:41,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:40:41 BoogieIcfgContainer [2023-08-30 07:40:41,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:40:41,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:40:41,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:40:41,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:40:41,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:40:40" (1/3) ... [2023-08-30 07:40:41,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c94b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:40:41, skipping insertion in model container [2023-08-30 07:40:41,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:40:40" (2/3) ... [2023-08-30 07:40:41,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c94b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:40:41, skipping insertion in model container [2023-08-30 07:40:41,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:40:41" (3/3) ... [2023-08-30 07:40:41,279 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-08-30 07:40:41,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:40:41,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 07:40:41,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:40:41,350 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 07:40:41,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 93 transitions, 202 flow [2023-08-30 07:40:41,402 INFO L130 PetriNetUnfolder]: 6/91 cut-off events. [2023-08-30 07:40:41,402 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:40:41,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 6/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-30 07:40:41,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 93 transitions, 202 flow [2023-08-30 07:40:41,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 186 flow [2023-08-30 07:40:41,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:40:41,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 87 transitions, 186 flow [2023-08-30 07:40:41,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 87 transitions, 186 flow [2023-08-30 07:40:41,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 186 flow [2023-08-30 07:40:41,443 INFO L130 PetriNetUnfolder]: 6/87 cut-off events. [2023-08-30 07:40:41,444 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:40:41,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 6/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-30 07:40:41,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-08-30 07:40:43,364 INFO L134 LiptonReduction]: Checked pairs total: 815 [2023-08-30 07:40:43,365 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-30 07:40:43,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:40:43,378 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;@36252e0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:40:43,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 07:40:43,379 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 07:40:43,379 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:40:43,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:43,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 07:40:43,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:43,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash 350, now seen corresponding path program 1 times [2023-08-30 07:40:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587885768] [2023-08-30 07:40:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587885768] [2023-08-30 07:40:43,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587885768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:43,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:43,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 07:40:43,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530070509] [2023-08-30 07:40:43,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:43,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 07:40:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 07:40:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 07:40:43,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 177 [2023-08-30 07:40:43,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:43,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 177 [2023-08-30 07:40:43,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:43,527 INFO L130 PetriNetUnfolder]: 88/151 cut-off events. [2023-08-30 07:40:43,527 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 07:40:43,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 151 events. 88/151 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 374 event pairs, 56 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 252. Up to 152 conditions per place. [2023-08-30 07:40:43,529 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-30 07:40:43,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 96 flow [2023-08-30 07:40:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 07:40:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 07:40:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2023-08-30 07:40:43,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2023-08-30 07:40:43,538 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 192 transitions. [2023-08-30 07:40:43,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 192 transitions. [2023-08-30 07:40:43,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:43,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 192 transitions. [2023-08-30 07:40:43,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,545 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,546 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 192 transitions. [2023-08-30 07:40:43,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 96 flow [2023-08-30 07:40:43,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 07:40:43,548 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-30 07:40:43,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-30 07:40:43,552 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 07:40:43,552 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-30 07:40:43,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:43,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:40:43,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 07:40:43,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:43,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:43,553 INFO L85 PathProgramCache]: Analyzing trace with hash 345860, now seen corresponding path program 1 times [2023-08-30 07:40:43,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:43,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459314408] [2023-08-30 07:40:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:43,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:43,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459314408] [2023-08-30 07:40:43,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459314408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:43,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:40:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185961329] [2023-08-30 07:40:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:40:43,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:40:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:40:43,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 177 [2023-08-30 07:40:43,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:43,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 177 [2023-08-30 07:40:43,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:43,731 INFO L130 PetriNetUnfolder]: 82/139 cut-off events. [2023-08-30 07:40:43,732 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:40:43,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 139 events. 82/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 335 event pairs, 52 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 282. Up to 139 conditions per place. [2023-08-30 07:40:43,734 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 07:40:43,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 80 flow [2023-08-30 07:40:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:40:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:40:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-30 07:40:43,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632768361581921 [2023-08-30 07:40:43,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-30 07:40:43,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-30 07:40:43,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:43,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-30 07:40:43,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,742 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 246 transitions. [2023-08-30 07:40:43,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 80 flow [2023-08-30 07:40:43,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 07:40:43,743 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-30 07:40:43,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, 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=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-30 07:40:43,744 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 07:40:43,744 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-30 07:40:43,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:43,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:40:43,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 07:40:43,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:43,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash 345861, now seen corresponding path program 1 times [2023-08-30 07:40:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:43,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947415029] [2023-08-30 07:40:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:43,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947415029] [2023-08-30 07:40:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947415029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:43,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:43,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:40:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368440651] [2023-08-30 07:40:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:43,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:40:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:43,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:40:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:40:43,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 177 [2023-08-30 07:40:43,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:43,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 177 [2023-08-30 07:40:43,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:43,883 INFO L130 PetriNetUnfolder]: 76/127 cut-off events. [2023-08-30 07:40:43,883 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:40:43,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 127 events. 76/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 298 event pairs, 48 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 259. Up to 127 conditions per place. [2023-08-30 07:40:43,884 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 07:40:43,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-30 07:40:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:40:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:40:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-08-30 07:40:43,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4821092278719397 [2023-08-30 07:40:43,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-08-30 07:40:43,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-08-30 07:40:43,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:43,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-08-30 07:40:43,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,888 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 256 transitions. [2023-08-30 07:40:43,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-30 07:40:43,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:40:43,889 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-08-30 07:40:43,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-08-30 07:40:43,890 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 07:40:43,892 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-08-30 07:40:43,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:43,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:43,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:40:43,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 07:40:43,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:43,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 332378011, now seen corresponding path program 1 times [2023-08-30 07:40:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642819358] [2023-08-30 07:40:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:43,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:43,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642819358] [2023-08-30 07:40:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642819358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:43,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:40:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173016937] [2023-08-30 07:40:43,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:43,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:40:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:40:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:40:44,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 07:40:44,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:44,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 07:40:44,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:44,058 INFO L130 PetriNetUnfolder]: 58/100 cut-off events. [2023-08-30 07:40:44,060 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:40:44,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 100 events. 58/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 212 event pairs, 36 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2023-08-30 07:40:44,062 INFO L137 encePairwiseOnDemand]: 175/177 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 07:40:44,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 71 flow [2023-08-30 07:40:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:40:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:40:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-30 07:40:44,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331450094161959 [2023-08-30 07:40:44,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-30 07:40:44,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-30 07:40:44,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:44,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-30 07:40:44,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,069 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 230 transitions. [2023-08-30 07:40:44,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 71 flow [2023-08-30 07:40:44,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:40:44,070 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-08-30 07:40:44,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-30 07:40:44,071 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 07:40:44,071 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-08-30 07:40:44,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:44,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:40:44,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 07:40:44,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:44,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:44,072 INFO L85 PathProgramCache]: Analyzing trace with hash 332378012, now seen corresponding path program 1 times [2023-08-30 07:40:44,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:44,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685343730] [2023-08-30 07:40:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:44,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685343730] [2023-08-30 07:40:44,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685343730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:44,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:40:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389610187] [2023-08-30 07:40:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:44,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:40:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:40:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:40:44,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 177 [2023-08-30 07:40:44,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:44,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 177 [2023-08-30 07:40:44,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:44,158 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-08-30 07:40:44,158 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:40:44,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 73 events. 40/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 153. Up to 73 conditions per place. [2023-08-30 07:40:44,158 INFO L137 encePairwiseOnDemand]: 175/177 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 07:40:44,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 68 flow [2023-08-30 07:40:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:40:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:40:44,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 07:40:44,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595103578154426 [2023-08-30 07:40:44,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 07:40:44,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 07:40:44,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:44,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 07:40:44,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,163 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 244 transitions. [2023-08-30 07:40:44,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 68 flow [2023-08-30 07:40:44,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:40:44,163 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-08-30 07:40:44,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-30 07:40:44,165 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 07:40:44,165 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-08-30 07:40:44,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:44,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:44,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 07:40:44,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:44,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash -617721443, now seen corresponding path program 1 times [2023-08-30 07:40:44,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:44,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450427288] [2023-08-30 07:40:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:44,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:44,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:44,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450427288] [2023-08-30 07:40:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450427288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:44,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:44,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246420845] [2023-08-30 07:40:44,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:40:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:40:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:44,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 07:40:44,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:44,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 07:40:44,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:44,504 INFO L130 PetriNetUnfolder]: 46/88 cut-off events. [2023-08-30 07:40:44,504 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 07:40:44,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 88 events. 46/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 1 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 184. Up to 22 conditions per place. [2023-08-30 07:40:44,505 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 29 selfloop transitions, 8 changer transitions 5/42 dead transitions. [2023-08-30 07:40:44,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 183 flow [2023-08-30 07:40:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:44,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-08-30 07:40:44,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-08-30 07:40:44,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-08-30 07:40:44,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-08-30 07:40:44,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:44,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-08-30 07:40:44,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,514 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 540 transitions. [2023-08-30 07:40:44,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 183 flow [2023-08-30 07:40:44,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:40:44,515 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 88 flow [2023-08-30 07:40:44,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-30 07:40:44,515 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-30 07:40:44,516 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 88 flow [2023-08-30 07:40:44,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:44,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:44,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 07:40:44,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:44,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2123295499, now seen corresponding path program 2 times [2023-08-30 07:40:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989765341] [2023-08-30 07:40:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:44,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:44,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989765341] [2023-08-30 07:40:44,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989765341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:44,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:44,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:44,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998392551] [2023-08-30 07:40:44,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:44,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:40:44,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:44,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:40:44,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:44,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 07:40:44,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:44,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 07:40:44,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:44,780 INFO L130 PetriNetUnfolder]: 56/104 cut-off events. [2023-08-30 07:40:44,780 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 07:40:44,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 104 events. 56/104 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 232 event pairs, 5 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 312. Up to 57 conditions per place. [2023-08-30 07:40:44,781 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 27 selfloop transitions, 12 changer transitions 5/44 dead transitions. [2023-08-30 07:40:44,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 250 flow [2023-08-30 07:40:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-08-30 07:40:44,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-08-30 07:40:44,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-08-30 07:40:44,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-08-30 07:40:44,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:44,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-08-30 07:40:44,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,788 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,788 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 88 flow. Second operand 7 states and 540 transitions. [2023-08-30 07:40:44,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 250 flow [2023-08-30 07:40:44,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 240 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:44,790 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 162 flow [2023-08-30 07:40:44,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-30 07:40:44,790 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-08-30 07:40:44,790 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 162 flow [2023-08-30 07:40:44,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:44,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:44,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 07:40:44,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:44,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1122445221, now seen corresponding path program 3 times [2023-08-30 07:40:44,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:44,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661698666] [2023-08-30 07:40:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:44,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:44,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661698666] [2023-08-30 07:40:44,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661698666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:44,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:44,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:44,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451456320] [2023-08-30 07:40:44,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:44,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:40:44,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:40:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:44,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 07:40:44,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:44,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:44,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 07:40:44,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:45,047 INFO L130 PetriNetUnfolder]: 62/114 cut-off events. [2023-08-30 07:40:45,047 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-08-30 07:40:45,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 114 events. 62/114 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 273 event pairs, 5 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 417. Up to 66 conditions per place. [2023-08-30 07:40:45,049 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2023-08-30 07:40:45,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 353 flow [2023-08-30 07:40:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-08-30 07:40:45,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-08-30 07:40:45,050 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-08-30 07:40:45,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-08-30 07:40:45,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:45,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-08-30 07:40:45,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,054 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,054 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 162 flow. Second operand 7 states and 540 transitions. [2023-08-30 07:40:45,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 353 flow [2023-08-30 07:40:45,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 321 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 07:40:45,058 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 228 flow [2023-08-30 07:40:45,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-08-30 07:40:45,059 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-08-30 07:40:45,059 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 228 flow [2023-08-30 07:40:45,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:45,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:45,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 07:40:45,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:45,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 203657433, now seen corresponding path program 4 times [2023-08-30 07:40:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564839158] [2023-08-30 07:40:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564839158] [2023-08-30 07:40:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564839158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:45,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:45,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93933386] [2023-08-30 07:40:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:45,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:40:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:40:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:45,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:45,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:45,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:45,305 INFO L130 PetriNetUnfolder]: 67/123 cut-off events. [2023-08-30 07:40:45,305 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2023-08-30 07:40:45,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 123 events. 67/123 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 312 event pairs, 5 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 492. Up to 71 conditions per place. [2023-08-30 07:40:45,306 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 33 selfloop transitions, 15 changer transitions 5/53 dead transitions. [2023-08-30 07:40:45,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 410 flow [2023-08-30 07:40:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-08-30 07:40:45,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4430992736077482 [2023-08-30 07:40:45,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-08-30 07:40:45,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-08-30 07:40:45,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:45,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-08-30 07:40:45,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,311 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,311 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 228 flow. Second operand 7 states and 549 transitions. [2023-08-30 07:40:45,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 410 flow [2023-08-30 07:40:45,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 370 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 07:40:45,313 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 236 flow [2023-08-30 07:40:45,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-30 07:40:45,313 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-08-30 07:40:45,313 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 236 flow [2023-08-30 07:40:45,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:45,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:45,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 07:40:45,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:45,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2099222449, now seen corresponding path program 5 times [2023-08-30 07:40:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:45,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703235724] [2023-08-30 07:40:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703235724] [2023-08-30 07:40:45,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703235724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:45,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:45,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940518624] [2023-08-30 07:40:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:45,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:40:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:40:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:45,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 07:40:45,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:45,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 07:40:45,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:45,545 INFO L130 PetriNetUnfolder]: 66/124 cut-off events. [2023-08-30 07:40:45,546 INFO L131 PetriNetUnfolder]: For 330/330 co-relation queries the response was YES. [2023-08-30 07:40:45,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 124 events. 66/124 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 309 event pairs, 7 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 510. Up to 76 conditions per place. [2023-08-30 07:40:45,547 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2023-08-30 07:40:45,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 401 flow [2023-08-30 07:40:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-08-30 07:40:45,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43422114608555284 [2023-08-30 07:40:45,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-08-30 07:40:45,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-08-30 07:40:45,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:45,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-08-30 07:40:45,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,551 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,551 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 236 flow. Second operand 7 states and 538 transitions. [2023-08-30 07:40:45,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 401 flow [2023-08-30 07:40:45,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 361 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 07:40:45,553 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 242 flow [2023-08-30 07:40:45,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-30 07:40:45,553 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-08-30 07:40:45,553 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 242 flow [2023-08-30 07:40:45,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:45,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:45,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 07:40:45,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:45,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:45,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1171992613, now seen corresponding path program 6 times [2023-08-30 07:40:45,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:45,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858610359] [2023-08-30 07:40:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:45,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:45,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858610359] [2023-08-30 07:40:45,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858610359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:45,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:45,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:45,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533941464] [2023-08-30 07:40:45,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:45,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:40:45,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:40:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:45,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 07:40:45,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:45,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 07:40:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:45,770 INFO L130 PetriNetUnfolder]: 67/127 cut-off events. [2023-08-30 07:40:45,771 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2023-08-30 07:40:45,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 127 events. 67/127 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 9 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 516. Up to 59 conditions per place. [2023-08-30 07:40:45,772 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 32 selfloop transitions, 14 changer transitions 5/51 dead transitions. [2023-08-30 07:40:45,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 417 flow [2023-08-30 07:40:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 534 transitions. [2023-08-30 07:40:45,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43099273607748184 [2023-08-30 07:40:45,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 534 transitions. [2023-08-30 07:40:45,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 534 transitions. [2023-08-30 07:40:45,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:45,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 534 transitions. [2023-08-30 07:40:45,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,777 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,777 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 242 flow. Second operand 7 states and 534 transitions. [2023-08-30 07:40:45,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 417 flow [2023-08-30 07:40:45,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 379 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 07:40:45,779 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 248 flow [2023-08-30 07:40:45,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-30 07:40:45,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-08-30 07:40:45,780 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 248 flow [2023-08-30 07:40:45,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:45,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 07:40:45,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:45,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash -451984460, now seen corresponding path program 1 times [2023-08-30 07:40:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998232309] [2023-08-30 07:40:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:45,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:45,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998232309] [2023-08-30 07:40:45,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998232309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:45,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:45,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:45,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748154024] [2023-08-30 07:40:45,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:45,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:45,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:45,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:45,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:45,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:45,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:45,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:45,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:45,900 INFO L130 PetriNetUnfolder]: 104/195 cut-off events. [2023-08-30 07:40:45,900 INFO L131 PetriNetUnfolder]: For 610/610 co-relation queries the response was YES. [2023-08-30 07:40:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 195 events. 104/195 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 625 event pairs, 16 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 809. Up to 78 conditions per place. [2023-08-30 07:40:45,902 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 46 selfloop transitions, 22 changer transitions 4/72 dead transitions. [2023-08-30 07:40:45,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 590 flow [2023-08-30 07:40:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-08-30 07:40:45,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390637610976597 [2023-08-30 07:40:45,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-08-30 07:40:45,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-08-30 07:40:45,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:45,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-08-30 07:40:45,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,906 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 248 flow. Second operand 7 states and 550 transitions. [2023-08-30 07:40:45,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 590 flow [2023-08-30 07:40:45,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 522 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 07:40:45,909 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 366 flow [2023-08-30 07:40:45,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-30 07:40:45,910 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2023-08-30 07:40:45,910 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 366 flow [2023-08-30 07:40:45,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:45,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:45,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 07:40:45,911 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:45,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:45,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2016617798, now seen corresponding path program 2 times [2023-08-30 07:40:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:45,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851468900] [2023-08-30 07:40:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:45,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851468900] [2023-08-30 07:40:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851468900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:45,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:45,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958732196] [2023-08-30 07:40:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:45,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:45,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:45,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:45,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:45,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:45,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:45,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:46,052 INFO L130 PetriNetUnfolder]: 108/211 cut-off events. [2023-08-30 07:40:46,053 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-08-30 07:40:46,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 211 events. 108/211 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 711 event pairs, 16 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 975. Up to 80 conditions per place. [2023-08-30 07:40:46,054 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 58 selfloop transitions, 25 changer transitions 1/84 dead transitions. [2023-08-30 07:40:46,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 743 flow [2023-08-30 07:40:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 07:40:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 07:40:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2023-08-30 07:40:46,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484463276836158 [2023-08-30 07:40:46,056 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2023-08-30 07:40:46,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2023-08-30 07:40:46,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:46,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2023-08-30 07:40:46,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,059 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,059 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 366 flow. Second operand 8 states and 635 transitions. [2023-08-30 07:40:46,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 743 flow [2023-08-30 07:40:46,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 701 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:46,063 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 489 flow [2023-08-30 07:40:46,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 07:40:46,063 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-30 07:40:46,064 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 489 flow [2023-08-30 07:40:46,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:46,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:46,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 07:40:46,064 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:46,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:46,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1331678969, now seen corresponding path program 1 times [2023-08-30 07:40:46,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:46,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564807712] [2023-08-30 07:40:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:46,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:46,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:46,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564807712] [2023-08-30 07:40:46,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564807712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:46,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404866773] [2023-08-30 07:40:46,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:46,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:46,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:46,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 489 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:46,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:46,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:46,184 INFO L130 PetriNetUnfolder]: 123/246 cut-off events. [2023-08-30 07:40:46,184 INFO L131 PetriNetUnfolder]: For 1488/1488 co-relation queries the response was YES. [2023-08-30 07:40:46,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 246 events. 123/246 cut-off events. For 1488/1488 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 910 event pairs, 8 based on Foata normal form. 6/252 useless extension candidates. Maximal degree in co-relation 1229. Up to 77 conditions per place. [2023-08-30 07:40:46,186 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 51 selfloop transitions, 20 changer transitions 2/73 dead transitions. [2023-08-30 07:40:46,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 776 flow [2023-08-30 07:40:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:40:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:40:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 473 transitions. [2023-08-30 07:40:46,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453860640301318 [2023-08-30 07:40:46,187 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 473 transitions. [2023-08-30 07:40:46,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 473 transitions. [2023-08-30 07:40:46,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:46,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 473 transitions. [2023-08-30 07:40:46,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,190 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,190 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 489 flow. Second operand 6 states and 473 transitions. [2023-08-30 07:40:46,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 776 flow [2023-08-30 07:40:46,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 727 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:46,194 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 547 flow [2023-08-30 07:40:46,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2023-08-30 07:40:46,195 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2023-08-30 07:40:46,195 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 547 flow [2023-08-30 07:40:46,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:46,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:46,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 07:40:46,195 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:46,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash 413181075, now seen corresponding path program 2 times [2023-08-30 07:40:46,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:46,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314179815] [2023-08-30 07:40:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:46,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:46,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:46,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314179815] [2023-08-30 07:40:46,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314179815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:46,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168491566] [2023-08-30 07:40:46,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:40:46,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:46,226 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 07:40:46,227 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 07:40:46,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:40:46,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:46,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:40:46,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:46,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168491566] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:46,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:40:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-08-30 07:40:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756773904] [2023-08-30 07:40:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:46,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:46,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:46,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:46,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:46,477 INFO L130 PetriNetUnfolder]: 124/249 cut-off events. [2023-08-30 07:40:46,477 INFO L131 PetriNetUnfolder]: For 1929/1929 co-relation queries the response was YES. [2023-08-30 07:40:46,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 249 events. 124/249 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 922 event pairs, 6 based on Foata normal form. 6/255 useless extension candidates. Maximal degree in co-relation 1307. Up to 134 conditions per place. [2023-08-30 07:40:46,479 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 48 selfloop transitions, 23 changer transitions 0/71 dead transitions. [2023-08-30 07:40:46,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 778 flow [2023-08-30 07:40:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:40:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:40:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-30 07:40:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519774011299435 [2023-08-30 07:40:46,481 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-30 07:40:46,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-30 07:40:46,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:46,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-30 07:40:46,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 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 07:40:46,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,483 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 547 flow. Second operand 5 states and 400 transitions. [2023-08-30 07:40:46,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 778 flow [2023-08-30 07:40:46,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 723 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-30 07:40:46,489 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 598 flow [2023-08-30 07:40:46,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-30 07:40:46,490 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-08-30 07:40:46,490 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 598 flow [2023-08-30 07:40:46,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:46,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:46,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 07:40:46,695 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,SelfDestructingSolverStorable14 [2023-08-30 07:40:46,696 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:46,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:46,696 INFO L85 PathProgramCache]: Analyzing trace with hash 964639928, now seen corresponding path program 3 times [2023-08-30 07:40:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145998658] [2023-08-30 07:40:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:46,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145998658] [2023-08-30 07:40:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145998658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:46,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320378298] [2023-08-30 07:40:46,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:46,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:46,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:46,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:46,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:46,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 598 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:46,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:46,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:46,855 INFO L130 PetriNetUnfolder]: 118/233 cut-off events. [2023-08-30 07:40:46,855 INFO L131 PetriNetUnfolder]: For 2148/2148 co-relation queries the response was YES. [2023-08-30 07:40:46,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 233 events. 118/233 cut-off events. For 2148/2148 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 811 event pairs, 30 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 1308. Up to 154 conditions per place. [2023-08-30 07:40:46,857 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2023-08-30 07:40:46,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 787 flow [2023-08-30 07:40:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:40:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:40:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-08-30 07:40:46,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463276836158192 [2023-08-30 07:40:46,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-08-30 07:40:46,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-08-30 07:40:46,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:46,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-08-30 07:40:46,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 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 07:40:46,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,861 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,861 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 598 flow. Second operand 5 states and 395 transitions. [2023-08-30 07:40:46,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 787 flow [2023-08-30 07:40:46,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 758 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:46,867 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 590 flow [2023-08-30 07:40:46,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-08-30 07:40:46,868 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-08-30 07:40:46,868 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 590 flow [2023-08-30 07:40:46,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:46,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:46,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 07:40:46,884 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:46,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1290296755, now seen corresponding path program 3 times [2023-08-30 07:40:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:46,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917161083] [2023-08-30 07:40:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:46,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917161083] [2023-08-30 07:40:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917161083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:46,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:46,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448428493] [2023-08-30 07:40:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:46,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:46,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:46,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:46,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:46,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:46,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:47,044 INFO L130 PetriNetUnfolder]: 146/289 cut-off events. [2023-08-30 07:40:47,045 INFO L131 PetriNetUnfolder]: For 2297/2297 co-relation queries the response was YES. [2023-08-30 07:40:47,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 289 events. 146/289 cut-off events. For 2297/2297 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1117 event pairs, 36 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 1622. Up to 212 conditions per place. [2023-08-30 07:40:47,047 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 61 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2023-08-30 07:40:47,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 1000 flow [2023-08-30 07:40:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:40:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:40:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-08-30 07:40:47,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45084745762711864 [2023-08-30 07:40:47,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-08-30 07:40:47,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-08-30 07:40:47,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:47,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-08-30 07:40:47,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,050 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,050 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 590 flow. Second operand 5 states and 399 transitions. [2023-08-30 07:40:47,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 1000 flow [2023-08-30 07:40:47,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 970 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:47,058 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 774 flow [2023-08-30 07:40:47,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-08-30 07:40:47,059 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2023-08-30 07:40:47,059 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 774 flow [2023-08-30 07:40:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:47,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:47,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 07:40:47,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:47,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1878015302, now seen corresponding path program 4 times [2023-08-30 07:40:47,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:47,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456961114] [2023-08-30 07:40:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456961114] [2023-08-30 07:40:47,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456961114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559268955] [2023-08-30 07:40:47,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:40:47,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:47,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:47,085 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 07:40:47,087 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 07:40:47,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:40:47,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:47,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:40:47,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:47,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:47,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559268955] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:47,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:40:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-08-30 07:40:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307121455] [2023-08-30 07:40:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:47,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:47,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:40:47,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:47,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:47,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:47,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:47,270 INFO L130 PetriNetUnfolder]: 136/269 cut-off events. [2023-08-30 07:40:47,270 INFO L131 PetriNetUnfolder]: For 2224/2224 co-relation queries the response was YES. [2023-08-30 07:40:47,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 269 events. 136/269 cut-off events. For 2224/2224 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1002 event pairs, 8 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 1612. Up to 140 conditions per place. [2023-08-30 07:40:47,272 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 54 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-08-30 07:40:47,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 79 transitions, 980 flow [2023-08-30 07:40:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:40:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:40:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-30 07:40:47,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519774011299435 [2023-08-30 07:40:47,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-30 07:40:47,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-30 07:40:47,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:47,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-30 07:40:47,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 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 07:40:47,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,276 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,276 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 774 flow. Second operand 5 states and 400 transitions. [2023-08-30 07:40:47,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 79 transitions, 980 flow [2023-08-30 07:40:47,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 951 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 07:40:47,282 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 778 flow [2023-08-30 07:40:47,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=778, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2023-08-30 07:40:47,283 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-08-30 07:40:47,283 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 778 flow [2023-08-30 07:40:47,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:47,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:47,295 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 07:40:47,488 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,SelfDestructingSolverStorable17 [2023-08-30 07:40:47,489 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:47,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2024669737, now seen corresponding path program 4 times [2023-08-30 07:40:47,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:47,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273787123] [2023-08-30 07:40:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:47,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273787123] [2023-08-30 07:40:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273787123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:47,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:47,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043990756] [2023-08-30 07:40:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:47,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:47,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:47,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:47,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:47,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:47,647 INFO L130 PetriNetUnfolder]: 134/267 cut-off events. [2023-08-30 07:40:47,648 INFO L131 PetriNetUnfolder]: For 2291/2291 co-relation queries the response was YES. [2023-08-30 07:40:47,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 267 events. 134/267 cut-off events. For 2291/2291 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1010 event pairs, 20 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 1624. Up to 92 conditions per place. [2023-08-30 07:40:47,650 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 58 selfloop transitions, 29 changer transitions 1/88 dead transitions. [2023-08-30 07:40:47,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 1113 flow [2023-08-30 07:40:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 07:40:47,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 07:40:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2023-08-30 07:40:47,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442090395480226 [2023-08-30 07:40:47,652 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 626 transitions. [2023-08-30 07:40:47,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 626 transitions. [2023-08-30 07:40:47,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:47,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 626 transitions. [2023-08-30 07:40:47,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.25) internal successors, (626), 8 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,656 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,656 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 778 flow. Second operand 8 states and 626 transitions. [2023-08-30 07:40:47,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 1113 flow [2023-08-30 07:40:47,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 1078 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 07:40:47,662 INFO L231 Difference]: Finished difference. Result has 89 places, 65 transitions, 848 flow [2023-08-30 07:40:47,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2023-08-30 07:40:47,663 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-08-30 07:40:47,663 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 848 flow [2023-08-30 07:40:47,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:47,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 07:40:47,664 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:47,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1299496320, now seen corresponding path program 5 times [2023-08-30 07:40:47,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:47,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145932137] [2023-08-30 07:40:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:47,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145932137] [2023-08-30 07:40:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145932137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:47,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:47,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902810050] [2023-08-30 07:40:47,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:47,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:47,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:47,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:47,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 848 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:47,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:47,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:47,784 INFO L130 PetriNetUnfolder]: 119/240 cut-off events. [2023-08-30 07:40:47,784 INFO L131 PetriNetUnfolder]: For 2250/2250 co-relation queries the response was YES. [2023-08-30 07:40:47,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 240 events. 119/240 cut-off events. For 2250/2250 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 863 event pairs, 8 based on Foata normal form. 8/248 useless extension candidates. Maximal degree in co-relation 1504. Up to 106 conditions per place. [2023-08-30 07:40:47,786 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 56 selfloop transitions, 20 changer transitions 2/78 dead transitions. [2023-08-30 07:40:47,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 78 transitions, 1045 flow [2023-08-30 07:40:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:40:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:40:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-30 07:40:47,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 07:40:47,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-30 07:40:47,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-30 07:40:47,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:47,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-30 07:40:47,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,791 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,791 INFO L175 Difference]: Start difference. First operand has 89 places, 65 transitions, 848 flow. Second operand 6 states and 472 transitions. [2023-08-30 07:40:47,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 78 transitions, 1045 flow [2023-08-30 07:40:47,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 78 transitions, 992 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 07:40:47,797 INFO L231 Difference]: Finished difference. Result has 89 places, 60 transitions, 752 flow [2023-08-30 07:40:47,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=89, PETRI_TRANSITIONS=60} [2023-08-30 07:40:47,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-08-30 07:40:47,798 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 60 transitions, 752 flow [2023-08-30 07:40:47,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:47,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:47,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 07:40:47,799 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:47,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2098405841, now seen corresponding path program 5 times [2023-08-30 07:40:47,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:47,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027649861] [2023-08-30 07:40:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:47,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:47,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:47,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027649861] [2023-08-30 07:40:47,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027649861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:40:47,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:40:47,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:40:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074636517] [2023-08-30 07:40:47,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:40:47,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:40:47,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:40:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:40:47,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 07:40:47,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 60 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:47,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 07:40:47,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:47,917 INFO L130 PetriNetUnfolder]: 113/218 cut-off events. [2023-08-30 07:40:47,917 INFO L131 PetriNetUnfolder]: For 2129/2129 co-relation queries the response was YES. [2023-08-30 07:40:47,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 218 events. 113/218 cut-off events. For 2129/2129 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 716 event pairs, 22 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 1378. Up to 92 conditions per place. [2023-08-30 07:40:47,919 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 44 selfloop transitions, 21 changer transitions 4/69 dead transitions. [2023-08-30 07:40:47,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 69 transitions, 925 flow [2023-08-30 07:40:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:40:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:40:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2023-08-30 07:40:47,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350282485875706 [2023-08-30 07:40:47,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2023-08-30 07:40:47,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2023-08-30 07:40:47,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:47,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2023-08-30 07:40:47,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,923 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,924 INFO L175 Difference]: Start difference. First operand has 89 places, 60 transitions, 752 flow. Second operand 7 states and 539 transitions. [2023-08-30 07:40:47,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 69 transitions, 925 flow [2023-08-30 07:40:47,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 69 transitions, 867 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 07:40:47,929 INFO L231 Difference]: Finished difference. Result has 89 places, 57 transitions, 712 flow [2023-08-30 07:40:47,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2023-08-30 07:40:47,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-08-30 07:40:47,929 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 712 flow [2023-08-30 07:40:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:47,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:47,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:47,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 07:40:47,930 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:47,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1342111166, now seen corresponding path program 1 times [2023-08-30 07:40:47,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:47,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621171178] [2023-08-30 07:40:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:47,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:48,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:48,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621171178] [2023-08-30 07:40:48,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621171178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:48,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871621633] [2023-08-30 07:40:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:48,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:48,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:48,013 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 07:40:48,043 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 07:40:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:48,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:48,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:48,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:48,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871621633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:48,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:48,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 07:40:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849972937] [2023-08-30 07:40:48,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:48,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 07:40:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 07:40:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-30 07:40:48,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:48,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 712 flow. Second operand has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:48,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:48,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:48,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:48,782 INFO L130 PetriNetUnfolder]: 116/218 cut-off events. [2023-08-30 07:40:48,783 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2023-08-30 07:40:48,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 218 events. 116/218 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 706 event pairs, 2 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1396. Up to 53 conditions per place. [2023-08-30 07:40:48,784 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 41 selfloop transitions, 21 changer transitions 26/88 dead transitions. [2023-08-30 07:40:48,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 1065 flow [2023-08-30 07:40:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 07:40:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 07:40:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 818 transitions. [2023-08-30 07:40:48,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42013353877760656 [2023-08-30 07:40:48,787 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 818 transitions. [2023-08-30 07:40:48,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 818 transitions. [2023-08-30 07:40:48,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:48,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 818 transitions. [2023-08-30 07:40:48,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.36363636363636) internal successors, (818), 11 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:48,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:48,792 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:48,792 INFO L175 Difference]: Start difference. First operand has 89 places, 57 transitions, 712 flow. Second operand 11 states and 818 transitions. [2023-08-30 07:40:48,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 1065 flow [2023-08-30 07:40:48,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 1013 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 07:40:48,797 INFO L231 Difference]: Finished difference. Result has 95 places, 46 transitions, 574 flow [2023-08-30 07:40:48,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=574, PETRI_PLACES=95, PETRI_TRANSITIONS=46} [2023-08-30 07:40:48,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2023-08-30 07:40:48,798 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 46 transitions, 574 flow [2023-08-30 07:40:48,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:48,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:48,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:48,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 07:40:49,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:49,004 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:49,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:49,004 INFO L85 PathProgramCache]: Analyzing trace with hash 909970288, now seen corresponding path program 2 times [2023-08-30 07:40:49,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:49,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837418741] [2023-08-30 07:40:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:49,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:49,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:49,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837418741] [2023-08-30 07:40:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837418741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:49,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721054743] [2023-08-30 07:40:49,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:40:49,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:49,082 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 07:40:49,084 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 07:40:49,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:40:49,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:49,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:49,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:49,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721054743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:49,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:49,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 07:40:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226530142] [2023-08-30 07:40:49,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:49,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 07:40:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 07:40:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-30 07:40:49,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:49,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 46 transitions, 574 flow. Second operand has 18 states, 18 states have (on average 70.66666666666667) internal successors, (1272), 18 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:49,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:49,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:49,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:49,804 INFO L130 PetriNetUnfolder]: 90/178 cut-off events. [2023-08-30 07:40:49,805 INFO L131 PetriNetUnfolder]: For 1629/1629 co-relation queries the response was YES. [2023-08-30 07:40:49,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 178 events. 90/178 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 2 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 1119. Up to 55 conditions per place. [2023-08-30 07:40:49,806 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 45 selfloop transitions, 26 changer transitions 9/80 dead transitions. [2023-08-30 07:40:49,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 80 transitions, 961 flow [2023-08-30 07:40:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 07:40:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 07:40:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 817 transitions. [2023-08-30 07:40:49,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196199280945044 [2023-08-30 07:40:49,808 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 817 transitions. [2023-08-30 07:40:49,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 817 transitions. [2023-08-30 07:40:49,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:49,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 817 transitions. [2023-08-30 07:40:49,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.27272727272727) internal successors, (817), 11 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:49,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:49,812 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:49,812 INFO L175 Difference]: Start difference. First operand has 95 places, 46 transitions, 574 flow. Second operand 11 states and 817 transitions. [2023-08-30 07:40:49,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 80 transitions, 961 flow [2023-08-30 07:40:49,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 838 flow, removed 17 selfloop flow, removed 13 redundant places. [2023-08-30 07:40:49,817 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 588 flow [2023-08-30 07:40:49,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2023-08-30 07:40:49,817 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-08-30 07:40:49,818 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 588 flow [2023-08-30 07:40:49,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.66666666666667) internal successors, (1272), 18 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:49,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:49,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:49,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 07:40:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:50,023 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:50,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash 934043338, now seen corresponding path program 3 times [2023-08-30 07:40:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593167234] [2023-08-30 07:40:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:50,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:50,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593167234] [2023-08-30 07:40:50,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593167234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:50,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732840339] [2023-08-30 07:40:50,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:40:50,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:50,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:50,112 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 07:40:50,114 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 07:40:50,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 07:40:50,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:50,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:50,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:50,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732840339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:50,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:50,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 07:40:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804413801] [2023-08-30 07:40:50,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:50,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 07:40:50,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 07:40:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-30 07:40:50,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:50,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 588 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:50,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:50,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:50,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:50,667 INFO L130 PetriNetUnfolder]: 84/173 cut-off events. [2023-08-30 07:40:50,667 INFO L131 PetriNetUnfolder]: For 1193/1193 co-relation queries the response was YES. [2023-08-30 07:40:50,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 173 events. 84/173 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 533 event pairs, 2 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 1034. Up to 55 conditions per place. [2023-08-30 07:40:50,668 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 33 selfloop transitions, 15 changer transitions 26/74 dead transitions. [2023-08-30 07:40:50,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 74 transitions, 865 flow [2023-08-30 07:40:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 07:40:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 07:40:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 811 transitions. [2023-08-30 07:40:50,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165382639958911 [2023-08-30 07:40:50,671 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 811 transitions. [2023-08-30 07:40:50,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 811 transitions. [2023-08-30 07:40:50,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:50,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 811 transitions. [2023-08-30 07:40:50,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.72727272727273) internal successors, (811), 11 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:50,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:50,678 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:50,683 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 588 flow. Second operand 11 states and 811 transitions. [2023-08-30 07:40:50,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 74 transitions, 865 flow [2023-08-30 07:40:50,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 790 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-08-30 07:40:50,688 INFO L231 Difference]: Finished difference. Result has 84 places, 37 transitions, 391 flow [2023-08-30 07:40:50,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=391, PETRI_PLACES=84, PETRI_TRANSITIONS=37} [2023-08-30 07:40:50,688 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2023-08-30 07:40:50,688 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 37 transitions, 391 flow [2023-08-30 07:40:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:50,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:50,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:50,696 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 07:40:50,894 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,SelfDestructingSolverStorable23 [2023-08-30 07:40:50,894 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:50,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1793870986, now seen corresponding path program 4 times [2023-08-30 07:40:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029422633] [2023-08-30 07:40:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:50,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:50,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029422633] [2023-08-30 07:40:50,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029422633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102358970] [2023-08-30 07:40:50,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:40:50,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:50,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:50,981 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 07:40:50,983 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 07:40:51,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:40:51,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:51,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:51,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:51,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102358970] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:51,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:51,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 07:40:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836584582] [2023-08-30 07:40:51,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:51,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 07:40:51,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 07:40:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-30 07:40:51,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:51,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 37 transitions, 391 flow. Second operand has 16 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:51,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:51,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:51,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:51,781 INFO L130 PetriNetUnfolder]: 75/169 cut-off events. [2023-08-30 07:40:51,781 INFO L131 PetriNetUnfolder]: For 1013/1013 co-relation queries the response was YES. [2023-08-30 07:40:51,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 169 events. 75/169 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 550 event pairs, 1 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 934. Up to 39 conditions per place. [2023-08-30 07:40:51,783 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 37 selfloop transitions, 27 changer transitions 18/82 dead transitions. [2023-08-30 07:40:51,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 881 flow [2023-08-30 07:40:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 07:40:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 07:40:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1246 transitions. [2023-08-30 07:40:51,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140910601528747 [2023-08-30 07:40:51,787 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1246 transitions. [2023-08-30 07:40:51,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1246 transitions. [2023-08-30 07:40:51,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:51,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1246 transitions. [2023-08-30 07:40:51,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.29411764705883) internal successors, (1246), 17 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:51,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 177.0) internal successors, (3186), 18 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:51,796 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 177.0) internal successors, (3186), 18 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:51,796 INFO L175 Difference]: Start difference. First operand has 84 places, 37 transitions, 391 flow. Second operand 17 states and 1246 transitions. [2023-08-30 07:40:51,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 881 flow [2023-08-30 07:40:51,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 771 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-08-30 07:40:51,804 INFO L231 Difference]: Finished difference. Result has 86 places, 46 transitions, 512 flow [2023-08-30 07:40:51,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=46} [2023-08-30 07:40:51,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2023-08-30 07:40:51,804 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 46 transitions, 512 flow [2023-08-30 07:40:51,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:51,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:51,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:51,812 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 07:40:52,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:52,013 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:52,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1817944036, now seen corresponding path program 5 times [2023-08-30 07:40:52,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:52,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599342689] [2023-08-30 07:40:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:52,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:52,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:52,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599342689] [2023-08-30 07:40:52,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599342689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:52,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593495027] [2023-08-30 07:40:52,110 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 07:40:52,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:52,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:52,117 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 07:40:52,119 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 07:40:52,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 07:40:52,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:52,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 07:40:52,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:52,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:52,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593495027] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:52,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:52,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-08-30 07:40:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954926456] [2023-08-30 07:40:52,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:52,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 07:40:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 07:40:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-08-30 07:40:52,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:52,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 46 transitions, 512 flow. Second operand has 15 states, 15 states have (on average 70.93333333333334) internal successors, (1064), 15 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:52,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:52,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:52,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:52,672 INFO L130 PetriNetUnfolder]: 67/145 cut-off events. [2023-08-30 07:40:52,672 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2023-08-30 07:40:52,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 145 events. 67/145 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 448 event pairs, 1 based on Foata normal form. 5/150 useless extension candidates. Maximal degree in co-relation 847. Up to 50 conditions per place. [2023-08-30 07:40:52,673 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 32 selfloop transitions, 20 changer transitions 20/72 dead transitions. [2023-08-30 07:40:52,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 72 transitions, 784 flow [2023-08-30 07:40:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:40:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:40:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1024 transitions. [2023-08-30 07:40:52,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132364810330912 [2023-08-30 07:40:52,675 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1024 transitions. [2023-08-30 07:40:52,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1024 transitions. [2023-08-30 07:40:52,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:52,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1024 transitions. [2023-08-30 07:40:52,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.14285714285714) internal successors, (1024), 14 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:52,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:52,678 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:52,679 INFO L175 Difference]: Start difference. First operand has 86 places, 46 transitions, 512 flow. Second operand 14 states and 1024 transitions. [2023-08-30 07:40:52,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 72 transitions, 784 flow [2023-08-30 07:40:52,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 72 transitions, 658 flow, removed 31 selfloop flow, removed 11 redundant places. [2023-08-30 07:40:52,682 INFO L231 Difference]: Finished difference. Result has 86 places, 40 transitions, 371 flow [2023-08-30 07:40:52,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=371, PETRI_PLACES=86, PETRI_TRANSITIONS=40} [2023-08-30 07:40:52,683 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2023-08-30 07:40:52,683 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 40 transitions, 371 flow [2023-08-30 07:40:52,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.93333333333334) internal successors, (1064), 15 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:52,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:52,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:52,692 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 07:40:52,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:52,888 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:52,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash 783941896, now seen corresponding path program 6 times [2023-08-30 07:40:52,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:52,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197535959] [2023-08-30 07:40:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:52,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197535959] [2023-08-30 07:40:52,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197535959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517318970] [2023-08-30 07:40:52,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 07:40:52,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:52,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:52,968 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 07:40:52,970 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 07:40:53,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 07:40:53,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:53,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:53,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:53,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:53,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517318970] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:53,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:53,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-30 07:40:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139925015] [2023-08-30 07:40:53,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 07:40:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 07:40:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-08-30 07:40:53,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:53,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 40 transitions, 371 flow. Second operand has 15 states, 15 states have (on average 70.53333333333333) internal successors, (1058), 15 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:53,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:53,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:53,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:53,624 INFO L130 PetriNetUnfolder]: 57/125 cut-off events. [2023-08-30 07:40:53,624 INFO L131 PetriNetUnfolder]: For 585/585 co-relation queries the response was YES. [2023-08-30 07:40:53,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 125 events. 57/125 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 344 event pairs, 1 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 681. Up to 29 conditions per place. [2023-08-30 07:40:53,625 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 23 changer transitions 11/64 dead transitions. [2023-08-30 07:40:53,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 64 transitions, 631 flow [2023-08-30 07:40:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:40:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:40:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1018 transitions. [2023-08-30 07:40:53,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081517352703795 [2023-08-30 07:40:53,630 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1018 transitions. [2023-08-30 07:40:53,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1018 transitions. [2023-08-30 07:40:53,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:53,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1018 transitions. [2023-08-30 07:40:53,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.71428571428571) internal successors, (1018), 14 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:53,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:53,634 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:53,634 INFO L175 Difference]: Start difference. First operand has 86 places, 40 transitions, 371 flow. Second operand 14 states and 1018 transitions. [2023-08-30 07:40:53,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 64 transitions, 631 flow [2023-08-30 07:40:53,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 562 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-08-30 07:40:53,637 INFO L231 Difference]: Finished difference. Result has 81 places, 40 transitions, 373 flow [2023-08-30 07:40:53,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=373, PETRI_PLACES=81, PETRI_TRANSITIONS=40} [2023-08-30 07:40:53,637 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2023-08-30 07:40:53,637 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 40 transitions, 373 flow [2023-08-30 07:40:53,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.53333333333333) internal successors, (1058), 15 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:53,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:53,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:53,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 07:40:53,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 07:40:53,839 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:53,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash -711625490, now seen corresponding path program 7 times [2023-08-30 07:40:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:53,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004432442] [2023-08-30 07:40:53,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:53,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:53,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004432442] [2023-08-30 07:40:53,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004432442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178270590] [2023-08-30 07:40:53,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 07:40:53,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:53,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:53,922 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:40:53,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 07:40:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:53,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:53,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:54,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:54,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178270590] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:54,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 07:40:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358180251] [2023-08-30 07:40:54,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:54,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 07:40:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 07:40:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-08-30 07:40:54,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:54,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 40 transitions, 373 flow. Second operand has 18 states, 18 states have (on average 70.5) internal successors, (1269), 18 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:54,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:54,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:54,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:54,531 INFO L130 PetriNetUnfolder]: 59/131 cut-off events. [2023-08-30 07:40:54,531 INFO L131 PetriNetUnfolder]: For 565/565 co-relation queries the response was YES. [2023-08-30 07:40:54,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 131 events. 59/131 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 373 event pairs, 3 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 705. Up to 34 conditions per place. [2023-08-30 07:40:54,532 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 31 selfloop transitions, 15 changer transitions 13/59 dead transitions. [2023-08-30 07:40:54,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 59 transitions, 624 flow [2023-08-30 07:40:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 07:40:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 07:40:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2023-08-30 07:40:54,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41129943502824856 [2023-08-30 07:40:54,534 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 728 transitions. [2023-08-30 07:40:54,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 728 transitions. [2023-08-30 07:40:54,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:54,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 728 transitions. [2023-08-30 07:40:54,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.8) internal successors, (728), 10 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:54,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:54,537 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:54,537 INFO L175 Difference]: Start difference. First operand has 81 places, 40 transitions, 373 flow. Second operand 10 states and 728 transitions. [2023-08-30 07:40:54,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 59 transitions, 624 flow [2023-08-30 07:40:54,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 59 transitions, 562 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-08-30 07:40:54,541 INFO L231 Difference]: Finished difference. Result has 83 places, 39 transitions, 361 flow [2023-08-30 07:40:54,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=83, PETRI_TRANSITIONS=39} [2023-08-30 07:40:54,544 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-08-30 07:40:54,545 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 39 transitions, 361 flow [2023-08-30 07:40:54,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.5) internal successors, (1269), 18 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:54,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:54,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:54,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 07:40:54,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 07:40:54,753 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:54,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1222071540, now seen corresponding path program 8 times [2023-08-30 07:40:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:54,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54897835] [2023-08-30 07:40:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:54,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:54,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54897835] [2023-08-30 07:40:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54897835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73628487] [2023-08-30 07:40:54,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:40:54,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:54,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:54,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:40:54,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 07:40:54,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:40:54,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:54,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:54,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:54,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73628487] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:55,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:55,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 07:40:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307579384] [2023-08-30 07:40:55,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:55,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 07:40:55,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 07:40:55,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-30 07:40:55,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:55,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 39 transitions, 361 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:55,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:55,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:55,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:55,483 INFO L130 PetriNetUnfolder]: 50/108 cut-off events. [2023-08-30 07:40:55,483 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-08-30 07:40:55,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 108 events. 50/108 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 270 event pairs, 3 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 578. Up to 32 conditions per place. [2023-08-30 07:40:55,484 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 23 selfloop transitions, 11 changer transitions 19/53 dead transitions. [2023-08-30 07:40:55,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 53 transitions, 533 flow [2023-08-30 07:40:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 07:40:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 07:40:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 796 transitions. [2023-08-30 07:40:55,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40883410374935797 [2023-08-30 07:40:55,486 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 796 transitions. [2023-08-30 07:40:55,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 796 transitions. [2023-08-30 07:40:55,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:55,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 796 transitions. [2023-08-30 07:40:55,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.36363636363636) internal successors, (796), 11 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:55,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:55,488 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:55,489 INFO L175 Difference]: Start difference. First operand has 83 places, 39 transitions, 361 flow. Second operand 11 states and 796 transitions. [2023-08-30 07:40:55,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 53 transitions, 533 flow [2023-08-30 07:40:55,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 53 transitions, 502 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 07:40:55,491 INFO L231 Difference]: Finished difference. Result has 83 places, 28 transitions, 256 flow [2023-08-30 07:40:55,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=256, PETRI_PLACES=83, PETRI_TRANSITIONS=28} [2023-08-30 07:40:55,492 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-08-30 07:40:55,492 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 28 transitions, 256 flow [2023-08-30 07:40:55,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:55,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:40:55,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:40:55,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 07:40:55,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 07:40:55,693 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:40:55,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:40:55,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1282005238, now seen corresponding path program 9 times [2023-08-30 07:40:55,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:40:55,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917051865] [2023-08-30 07:40:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:40:55,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:40:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:40:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:40:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917051865] [2023-08-30 07:40:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917051865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:40:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374987760] [2023-08-30 07:40:55,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:40:55,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:40:55,772 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:40:55,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 07:40:55,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 07:40:55,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:40:55,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:40:55,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:40:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:55,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:40:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:40:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374987760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:40:56,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:40:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 07:40:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864138006] [2023-08-30 07:40:56,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:40:56,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 07:40:56,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:40:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 07:40:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-30 07:40:56,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 07:40:56,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 28 transitions, 256 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:56,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:40:56,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 07:40:56,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:40:56,305 INFO L130 PetriNetUnfolder]: 32/70 cut-off events. [2023-08-30 07:40:56,305 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2023-08-30 07:40:56,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 70 events. 32/70 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 375. Up to 23 conditions per place. [2023-08-30 07:40:56,306 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 07:40:56,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 34 transitions, 344 flow [2023-08-30 07:40:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 07:40:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 07:40:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2023-08-30 07:40:56,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067796610169492 [2023-08-30 07:40:56,308 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 648 transitions. [2023-08-30 07:40:56,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 648 transitions. [2023-08-30 07:40:56,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:40:56,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 648 transitions. [2023-08-30 07:40:56,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:56,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:56,311 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:56,311 INFO L175 Difference]: Start difference. First operand has 83 places, 28 transitions, 256 flow. Second operand 9 states and 648 transitions. [2023-08-30 07:40:56,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 34 transitions, 344 flow [2023-08-30 07:40:56,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 34 transitions, 291 flow, removed 3 selfloop flow, removed 14 redundant places. [2023-08-30 07:40:56,313 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2023-08-30 07:40:56,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2023-08-30 07:40:56,313 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2023-08-30 07:40:56,313 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2023-08-30 07:40:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:40:56,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 07:40:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 07:40:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 07:40:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 07:40:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 07:40:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 07:40:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 07:40:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 07:40:56,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 07:40:56,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 07:40:56,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 07:40:56,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 07:40:56,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 07:40:56,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:40:56,522 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 5, 5, 1, 1, 1, 1, 1] [2023-08-30 07:40:56,524 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 07:40:56,525 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 07:40:56,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:40:56 BasicIcfg [2023-08-30 07:40:56,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 07:40:56,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 07:40:56,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 07:40:56,527 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 07:40:56,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:40:41" (3/4) ... [2023-08-30 07:40:56,529 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 07:40:56,533 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 07:40:56,533 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 07:40:56,535 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 07:40:56,535 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 07:40:56,535 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 07:40:56,536 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 07:40:56,561 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 07:40:56,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 07:40:56,562 INFO L158 Benchmark]: Toolchain (without parser) took 15975.90ms. Allocated memory was 67.1MB in the beginning and 195.0MB in the end (delta: 127.9MB). Free memory was 44.8MB in the beginning and 127.9MB in the end (delta: -83.1MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2023-08-30 07:40:56,562 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:40:56,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.40ms. Allocated memory is still 67.1MB. Free memory was 44.6MB in the beginning and 33.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 07:40:56,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.30ms. Allocated memory is still 67.1MB. Free memory was 33.8MB in the beginning and 32.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:40:56,564 INFO L158 Benchmark]: Boogie Preprocessor took 35.12ms. Allocated memory is still 67.1MB. Free memory was 32.2MB in the beginning and 31.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:40:56,565 INFO L158 Benchmark]: RCFGBuilder took 418.04ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 30.8MB in the beginning and 58.5MB in the end (delta: -27.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-08-30 07:40:56,565 INFO L158 Benchmark]: TraceAbstraction took 15252.31ms. Allocated memory was 90.2MB in the beginning and 195.0MB in the end (delta: 104.9MB). Free memory was 58.0MB in the beginning and 130.7MB in the end (delta: -72.7MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2023-08-30 07:40:56,568 INFO L158 Benchmark]: Witness Printer took 34.66ms. Allocated memory is still 195.0MB. Free memory was 130.7MB in the beginning and 127.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:40:56,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.40ms. Allocated memory is still 67.1MB. Free memory was 44.6MB in the beginning and 33.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.30ms. Allocated memory is still 67.1MB. Free memory was 33.8MB in the beginning and 32.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.12ms. Allocated memory is still 67.1MB. Free memory was 32.2MB in the beginning and 31.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 418.04ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 30.8MB in the beginning and 58.5MB in the end (delta: -27.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15252.31ms. Allocated memory was 90.2MB in the beginning and 195.0MB in the end (delta: 104.9MB). Free memory was 58.0MB in the beginning and 130.7MB in the end (delta: -72.7MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Witness Printer took 34.66ms. Allocated memory is still 195.0MB. Free memory was 130.7MB in the beginning and 127.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 88 PlacesBefore, 29 PlacesAfterwards, 87 TransitionsBefore, 24 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 84 TotalNumberOfCompositions, 815 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 744, independent: 730, independent conditional: 0, independent unconditional: 730, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 385, independent: 383, independent conditional: 0, independent unconditional: 383, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 744, independent: 347, independent conditional: 0, independent unconditional: 347, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 385, unknown conditional: 0, unknown unconditional: 385] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 79]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.2s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2506 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2061 mSDsluCounter, 1584 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1545 mSDsCounter, 335 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8741 IncrementalHoareTripleChecker+Invalid, 9076 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 335 mSolverCounterUnsat, 39 mSDtfsCounter, 8741 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 239 SyntacticMatches, 29 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=848occurred in iteration=19, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 533 NumberOfCodeBlocks, 533 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 4102 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1457 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 52 InterpolantComputations, 21 PerfectInterpolantSequences, 11/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 07:40:56,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE