./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/popl20-mult-equiv.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 7faf759f4f4392e84815a483ab24e4497f918cd291dc733acf407d398902eccf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 03:39:44,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 03:39:44,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 03:39:44,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 03:39:44,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 03:39:44,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 03:39:44,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 03:39:44,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 03:39:44,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 03:39:44,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 03:39:44,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 03:39:44,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 03:39:44,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 03:39:44,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 03:39:44,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 03:39:44,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 03:39:44,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 03:39:44,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 03:39:44,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 03:39:44,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 03:39:44,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 03:39:44,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 03:39:44,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 03:39:44,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 03:39:44,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 03:39:44,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 03:39:44,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 03:39:44,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 03:39:44,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 03:39:44,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 03:39:44,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 03:39:44,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 03:39:44,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 03:39:44,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 03:39:44,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 03:39:44,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 03:39:44,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 03:39:44,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 03:39:44,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 03:39:44,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 03:39:44,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 03:39:44,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 03:39:44,964 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 03:39:44,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 03:39:44,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 03:39:44,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 03:39:44,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 03:39:44,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 03:39:44,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 03:39:44,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 03:39:44,967 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 03:39:44,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 03:39:44,968 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 03:39:44,968 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 03:39:44,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 03:39:44,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 03:39:44,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 03:39:44,969 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 03:39:44,969 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 03:39:44,969 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 03:39:44,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 03:39:44,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 03:39:44,970 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 03:39:44,970 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 03:39:44,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 03:39:44,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 03:39:44,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 03:39:44,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:39:44,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 03:39:44,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 03:39:44,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 03:39:44,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 03:39:44,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 03:39:44,972 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 03:39:44,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 03:39:44,972 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 03:39:44,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faf759f4f4392e84815a483ab24e4497f918cd291dc733acf407d398902eccf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 03:39:45,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 03:39:45,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 03:39:45,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 03:39:45,308 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 03:39:45,309 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 03:39:45,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-09-01 03:39:46,562 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 03:39:46,777 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 03:39:46,778 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-09-01 03:39:46,785 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39824381d/27c928e3feed4c0f96742ef095325e19/FLAG706712f6c [2023-09-01 03:39:46,805 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39824381d/27c928e3feed4c0f96742ef095325e19 [2023-09-01 03:39:46,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 03:39:46,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 03:39:46,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 03:39:46,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 03:39:46,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 03:39:46,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:39:46" (1/1) ... [2023-09-01 03:39:46,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c33af98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:46, skipping insertion in model container [2023-09-01 03:39:46,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:39:46" (1/1) ... [2023-09-01 03:39:46,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 03:39:46,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 03:39:46,976 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/popl20-mult-equiv.wvr.c[2591,2604] [2023-09-01 03:39:46,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:39:46,990 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 03:39:47,009 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/popl20-mult-equiv.wvr.c[2591,2604] [2023-09-01 03:39:47,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:39:47,016 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 03:39:47,017 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 03:39:47,022 INFO L208 MainTranslator]: Completed translation [2023-09-01 03:39:47,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47 WrapperNode [2023-09-01 03:39:47,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 03:39:47,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 03:39:47,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 03:39:47,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 03:39:47,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,059 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-09-01 03:39:47,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 03:39:47,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 03:39:47,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 03:39:47,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 03:39:47,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 03:39:47,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 03:39:47,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 03:39:47,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 03:39:47,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (1/1) ... [2023-09-01 03:39:47,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:39:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:39:47,111 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) [2023-09-01 03:39:47,125 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 [2023-09-01 03:39:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 03:39:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 03:39:47,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 03:39:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 03:39:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 03:39:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 03:39:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 03:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 03:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 03:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 03:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 03:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 03:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 03:39:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 03:39:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 03:39:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 03:39:47,165 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 03:39:47,243 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 03:39:47,245 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 03:39:47,563 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 03:39:47,626 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 03:39:47,626 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 03:39:47,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 03:39:47 BoogieIcfgContainer [2023-09-01 03:39:47,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 03:39:47,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 03:39:47,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 03:39:47,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 03:39:47,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 03:39:46" (1/3) ... [2023-09-01 03:39:47,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1540e514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 03:39:47, skipping insertion in model container [2023-09-01 03:39:47,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:39:47" (2/3) ... [2023-09-01 03:39:47,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1540e514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 03:39:47, skipping insertion in model container [2023-09-01 03:39:47,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 03:39:47" (3/3) ... [2023-09-01 03:39:47,647 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-09-01 03:39:47,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 03:39:47,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 03:39:47,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 03:39:47,791 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 03:39:47,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions, 244 flow [2023-09-01 03:39:47,920 INFO L130 PetriNetUnfolder]: 7/107 cut-off events. [2023-09-01 03:39:47,920 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:47,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 7/107 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-09-01 03:39:47,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 110 transitions, 244 flow [2023-09-01 03:39:47,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 103 transitions, 224 flow [2023-09-01 03:39:47,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 03:39:47,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 103 transitions, 224 flow [2023-09-01 03:39:47,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 103 transitions, 224 flow [2023-09-01 03:39:47,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 103 transitions, 224 flow [2023-09-01 03:39:47,986 INFO L130 PetriNetUnfolder]: 7/103 cut-off events. [2023-09-01 03:39:47,986 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:47,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 7/103 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-09-01 03:39:47,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 1124 [2023-09-01 03:39:51,334 INFO L134 LiptonReduction]: Checked pairs total: 1820 [2023-09-01 03:39:51,334 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-09-01 03:39:51,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 03:39:51,349 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;@392e4bc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 03:39:51,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 03:39:51,351 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 03:39:51,351 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 03:39:51,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:51,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 03:39:51,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:51,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 430, now seen corresponding path program 1 times [2023-09-01 03:39:51,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:51,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90439425] [2023-09-01 03:39:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:51,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:51,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:51,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90439425] [2023-09-01 03:39:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90439425] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:51,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:51,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 03:39:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313076380] [2023-09-01 03:39:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:51,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 03:39:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 03:39:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 03:39:51,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 205 [2023-09-01 03:39:51,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 90 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:51,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 205 [2023-09-01 03:39:51,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:51,586 INFO L130 PetriNetUnfolder]: 259/418 cut-off events. [2023-09-01 03:39:51,586 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 03:39:51,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 418 events. 259/418 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1804 event pairs, 203 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 684. Up to 411 conditions per place. [2023-09-01 03:39:51,595 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 29 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-09-01 03:39:51,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 142 flow [2023-09-01 03:39:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 03:39:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 03:39:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 224 transitions. [2023-09-01 03:39:51,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463414634146342 [2023-09-01 03:39:51,610 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 224 transitions. [2023-09-01 03:39:51,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 224 transitions. [2023-09-01 03:39:51,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:51,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 224 transitions. [2023-09-01 03:39:51,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,623 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,625 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 90 flow. Second operand 2 states and 224 transitions. [2023-09-01 03:39:51,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 142 flow [2023-09-01 03:39:51,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 130 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 03:39:51,630 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 72 flow [2023-09-01 03:39:51,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-09-01 03:39:51,635 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 03:39:51,635 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 72 flow [2023-09-01 03:39:51,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:51,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 03:39:51,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 03:39:51,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:51,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:51,646 INFO L85 PathProgramCache]: Analyzing trace with hash 423839, now seen corresponding path program 1 times [2023-09-01 03:39:51,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:51,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408981562] [2023-09-01 03:39:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:51,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:51,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408981562] [2023-09-01 03:39:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408981562] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:39:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626452102] [2023-09-01 03:39:51,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:51,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:39:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:39:51,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:39:51,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 205 [2023-09-01 03:39:51,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:51,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 205 [2023-09-01 03:39:51,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:51,902 INFO L130 PetriNetUnfolder]: 247/397 cut-off events. [2023-09-01 03:39:51,902 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:51,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 397 events. 247/397 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1665 event pairs, 194 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 799. Up to 389 conditions per place. [2023-09-01 03:39:51,906 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 26 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-09-01 03:39:51,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 122 flow [2023-09-01 03:39:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:39:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:39:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-09-01 03:39:51,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-09-01 03:39:51,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-09-01 03:39:51,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-09-01 03:39:51,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:51,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-09-01 03:39:51,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,917 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 72 flow. Second operand 3 states and 287 transitions. [2023-09-01 03:39:51,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 122 flow [2023-09-01 03:39:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 03:39:51,919 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 70 flow [2023-09-01 03:39:51,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-09-01 03:39:51,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 03:39:51,920 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 70 flow [2023-09-01 03:39:51,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:51,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:51,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 03:39:51,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 03:39:51,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:51,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash 423840, now seen corresponding path program 1 times [2023-09-01 03:39:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:51,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665082360] [2023-09-01 03:39:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:52,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665082360] [2023-09-01 03:39:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665082360] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:52,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:52,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:39:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189815584] [2023-09-01 03:39:52,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:52,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:39:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:39:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:39:52,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 205 [2023-09-01 03:39:52,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:52,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 205 [2023-09-01 03:39:52,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:52,155 INFO L130 PetriNetUnfolder]: 235/376 cut-off events. [2023-09-01 03:39:52,155 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:52,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 376 events. 235/376 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1582 event pairs, 185 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 758. Up to 368 conditions per place. [2023-09-01 03:39:52,158 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 24 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-09-01 03:39:52,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 116 flow [2023-09-01 03:39:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:39:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:39:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-09-01 03:39:52,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2023-09-01 03:39:52,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-09-01 03:39:52,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-09-01 03:39:52,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:52,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-09-01 03:39:52,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,163 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 70 flow. Second operand 3 states and 300 transitions. [2023-09-01 03:39:52,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 116 flow [2023-09-01 03:39:52,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:52,165 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 67 flow [2023-09-01 03:39:52,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-09-01 03:39:52,166 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-09-01 03:39:52,166 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 67 flow [2023-09-01 03:39:52,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:52,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 03:39:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 03:39:52,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:52,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 407320979, now seen corresponding path program 1 times [2023-09-01 03:39:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632441077] [2023-09-01 03:39:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:52,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:52,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632441077] [2023-09-01 03:39:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632441077] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:52,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:52,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:39:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777517854] [2023-09-01 03:39:52,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:52,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:39:52,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:39:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:39:52,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 205 [2023-09-01 03:39:52,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:52,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 205 [2023-09-01 03:39:52,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:52,334 INFO L130 PetriNetUnfolder]: 221/351 cut-off events. [2023-09-01 03:39:52,334 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:52,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 351 events. 221/351 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1431 event pairs, 172 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 709. Up to 343 conditions per place. [2023-09-01 03:39:52,338 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 22 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-09-01 03:39:52,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 109 flow [2023-09-01 03:39:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:39:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:39:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-09-01 03:39:52,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46016260162601624 [2023-09-01 03:39:52,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-09-01 03:39:52,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-09-01 03:39:52,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:52,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-09-01 03:39:52,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,346 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 67 flow. Second operand 3 states and 283 transitions. [2023-09-01 03:39:52,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 109 flow [2023-09-01 03:39:52,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:52,348 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 64 flow [2023-09-01 03:39:52,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-09-01 03:39:52,350 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2023-09-01 03:39:52,350 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 64 flow [2023-09-01 03:39:52,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:52,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 03:39:52,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 03:39:52,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:52,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:52,351 INFO L85 PathProgramCache]: Analyzing trace with hash 407320978, now seen corresponding path program 1 times [2023-09-01 03:39:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156682699] [2023-09-01 03:39:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:52,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156682699] [2023-09-01 03:39:52,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156682699] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:52,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:39:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306443953] [2023-09-01 03:39:52,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:39:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:52,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:39:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:39:52,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 205 [2023-09-01 03:39:52,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:52,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 205 [2023-09-01 03:39:52,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:52,558 INFO L130 PetriNetUnfolder]: 207/326 cut-off events. [2023-09-01 03:39:52,558 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:52,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 326 events. 207/326 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1284 event pairs, 159 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 660. Up to 318 conditions per place. [2023-09-01 03:39:52,561 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 20 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-09-01 03:39:52,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 102 flow [2023-09-01 03:39:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:39:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:39:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-09-01 03:39:52,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813008130081301 [2023-09-01 03:39:52,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-09-01 03:39:52,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-09-01 03:39:52,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:52,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-09-01 03:39:52,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,566 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 64 flow. Second operand 3 states and 296 transitions. [2023-09-01 03:39:52,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 102 flow [2023-09-01 03:39:52,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:52,567 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 61 flow [2023-09-01 03:39:52,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-09-01 03:39:52,568 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 03:39:52,568 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 61 flow [2023-09-01 03:39:52,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:52,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:52,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 03:39:52,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:52,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 593447536, now seen corresponding path program 1 times [2023-09-01 03:39:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:52,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984419585] [2023-09-01 03:39:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:52,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:52,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:52,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984419585] [2023-09-01 03:39:52,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984419585] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:52,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:52,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 03:39:52,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796535682] [2023-09-01 03:39:52,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:52,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:39:52,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:39:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:39:52,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 205 [2023-09-01 03:39:52,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:52,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 205 [2023-09-01 03:39:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:52,789 INFO L130 PetriNetUnfolder]: 165/266 cut-off events. [2023-09-01 03:39:52,789 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:52,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 266 events. 165/266 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 999 event pairs, 126 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 541. Up to 258 conditions per place. [2023-09-01 03:39:52,791 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 19 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 03:39:52,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 99 flow [2023-09-01 03:39:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:39:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:39:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-09-01 03:39:52,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2023-09-01 03:39:52,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-09-01 03:39:52,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-09-01 03:39:52,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:52,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-09-01 03:39:52,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,796 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 61 flow. Second operand 3 states and 255 transitions. [2023-09-01 03:39:52,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 99 flow [2023-09-01 03:39:52,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:52,797 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 60 flow [2023-09-01 03:39:52,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-09-01 03:39:52,798 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 03:39:52,798 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 60 flow [2023-09-01 03:39:52,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:52,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:52,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 03:39:52,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:52,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 593447537, now seen corresponding path program 1 times [2023-09-01 03:39:52,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:52,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158209977] [2023-09-01 03:39:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:52,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:52,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158209977] [2023-09-01 03:39:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158209977] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:39:52,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059192089] [2023-09-01 03:39:52,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:52,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:39:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:52,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:39:52,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:39:52,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 03:39:52,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:52,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 03:39:52,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:52,923 INFO L130 PetriNetUnfolder]: 123/206 cut-off events. [2023-09-01 03:39:52,924 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:39:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 206 events. 123/206 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 720 event pairs, 93 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 422. Up to 198 conditions per place. [2023-09-01 03:39:52,925 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 18 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 03:39:52,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 96 flow [2023-09-01 03:39:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:39:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:39:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-09-01 03:39:52,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45691056910569106 [2023-09-01 03:39:52,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-09-01 03:39:52,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-09-01 03:39:52,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:52,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-09-01 03:39:52,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,930 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 60 flow. Second operand 3 states and 281 transitions. [2023-09-01 03:39:52,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 96 flow [2023-09-01 03:39:52,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:52,931 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 59 flow [2023-09-01 03:39:52,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-09-01 03:39:52,932 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 03:39:52,932 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 59 flow [2023-09-01 03:39:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:52,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:52,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:52,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 03:39:52,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:52,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:52,934 INFO L85 PathProgramCache]: Analyzing trace with hash -578122106, now seen corresponding path program 1 times [2023-09-01 03:39:52,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:52,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625617243] [2023-09-01 03:39:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:52,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:53,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:53,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625617243] [2023-09-01 03:39:53,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625617243] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:53,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:53,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:39:53,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995432526] [2023-09-01 03:39:53,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:53,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:39:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:39:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:39:53,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 205 [2023-09-01 03:39:53,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:53,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 205 [2023-09-01 03:39:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:53,198 INFO L130 PetriNetUnfolder]: 271/426 cut-off events. [2023-09-01 03:39:53,198 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 03:39:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 426 events. 271/426 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1513 event pairs, 37 based on Foata normal form. 1/277 useless extension candidates. Maximal degree in co-relation 836. Up to 309 conditions per place. [2023-09-01 03:39:53,200 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2023-09-01 03:39:53,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 166 flow [2023-09-01 03:39:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:39:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:39:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-09-01 03:39:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526829268292683 [2023-09-01 03:39:53,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-09-01 03:39:53,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-09-01 03:39:53,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:53,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-09-01 03:39:53,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,205 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 59 flow. Second operand 3 states and 324 transitions. [2023-09-01 03:39:53,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 166 flow [2023-09-01 03:39:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:53,207 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 84 flow [2023-09-01 03:39:53,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-09-01 03:39:53,207 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-09-01 03:39:53,207 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 84 flow [2023-09-01 03:39:53,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:53,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:53,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 03:39:53,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:53,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash -684329553, now seen corresponding path program 1 times [2023-09-01 03:39:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:53,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485430380] [2023-09-01 03:39:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:53,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:53,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485430380] [2023-09-01 03:39:53,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485430380] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:53,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:53,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 03:39:53,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258840593] [2023-09-01 03:39:53,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:53,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 03:39:53,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 03:39:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 03:39:53,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 03:39:53,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:53,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 03:39:53,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:53,718 INFO L130 PetriNetUnfolder]: 405/626 cut-off events. [2023-09-01 03:39:53,719 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2023-09-01 03:39:53,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 626 events. 405/626 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2478 event pairs, 23 based on Foata normal form. 32/648 useless extension candidates. Maximal degree in co-relation 1490. Up to 229 conditions per place. [2023-09-01 03:39:53,723 INFO L137 encePairwiseOnDemand]: 198/205 looper letters, 67 selfloop transitions, 19 changer transitions 0/88 dead transitions. [2023-09-01 03:39:53,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 88 transitions, 423 flow [2023-09-01 03:39:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 03:39:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 03:39:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 869 transitions. [2023-09-01 03:39:53,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47100271002710026 [2023-09-01 03:39:53,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 869 transitions. [2023-09-01 03:39:53,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 869 transitions. [2023-09-01 03:39:53,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:53,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 869 transitions. [2023-09-01 03:39:53,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.55555555555556) internal successors, (869), 9 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,731 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,731 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 84 flow. Second operand 9 states and 869 transitions. [2023-09-01 03:39:53,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 88 transitions, 423 flow [2023-09-01 03:39:53,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 88 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:53,734 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 219 flow [2023-09-01 03:39:53,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=219, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-09-01 03:39:53,734 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-09-01 03:39:53,735 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 219 flow [2023-09-01 03:39:53,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:53,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:53,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 03:39:53,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:53,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1435029477, now seen corresponding path program 2 times [2023-09-01 03:39:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:53,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604243767] [2023-09-01 03:39:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604243767] [2023-09-01 03:39:53,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604243767] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:53,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:53,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 03:39:53,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453558273] [2023-09-01 03:39:53,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:53,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:39:53,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:53,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:39:53,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:39:53,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 03:39:53,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:53,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:53,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 03:39:53,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:54,125 INFO L130 PetriNetUnfolder]: 617/958 cut-off events. [2023-09-01 03:39:54,126 INFO L131 PetriNetUnfolder]: For 1455/1461 co-relation queries the response was YES. [2023-09-01 03:39:54,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 958 events. 617/958 cut-off events. For 1455/1461 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4216 event pairs, 21 based on Foata normal form. 20/968 useless extension candidates. Maximal degree in co-relation 3138. Up to 348 conditions per place. [2023-09-01 03:39:54,133 INFO L137 encePairwiseOnDemand]: 197/205 looper letters, 72 selfloop transitions, 15 changer transitions 3/92 dead transitions. [2023-09-01 03:39:54,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 92 transitions, 572 flow [2023-09-01 03:39:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 03:39:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 03:39:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2023-09-01 03:39:54,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4902439024390244 [2023-09-01 03:39:54,135 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2023-09-01 03:39:54,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2023-09-01 03:39:54,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:54,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2023-09-01 03:39:54,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,139 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,139 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 219 flow. Second operand 6 states and 603 transitions. [2023-09-01 03:39:54,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 92 transitions, 572 flow [2023-09-01 03:39:54,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 92 transitions, 568 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 03:39:54,146 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 290 flow [2023-09-01 03:39:54,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-09-01 03:39:54,146 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-09-01 03:39:54,147 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 290 flow [2023-09-01 03:39:54,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:54,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:54,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 03:39:54,148 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:54,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:54,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1558720693, now seen corresponding path program 3 times [2023-09-01 03:39:54,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:54,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846907273] [2023-09-01 03:39:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:54,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846907273] [2023-09-01 03:39:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846907273] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:54,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:54,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 03:39:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934891495] [2023-09-01 03:39:54,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:54,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:39:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:39:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:39:54,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-09-01 03:39:54,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:54,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-09-01 03:39:54,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:54,573 INFO L130 PetriNetUnfolder]: 720/1121 cut-off events. [2023-09-01 03:39:54,574 INFO L131 PetriNetUnfolder]: For 3019/3041 co-relation queries the response was YES. [2023-09-01 03:39:54,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 1121 events. 720/1121 cut-off events. For 3019/3041 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5082 event pairs, 107 based on Foata normal form. 28/1127 useless extension candidates. Maximal degree in co-relation 4166. Up to 799 conditions per place. [2023-09-01 03:39:54,581 INFO L137 encePairwiseOnDemand]: 198/205 looper letters, 57 selfloop transitions, 18 changer transitions 3/80 dead transitions. [2023-09-01 03:39:54,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 619 flow [2023-09-01 03:39:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 03:39:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 03:39:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 588 transitions. [2023-09-01 03:39:54,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47804878048780486 [2023-09-01 03:39:54,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 588 transitions. [2023-09-01 03:39:54,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 588 transitions. [2023-09-01 03:39:54,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:54,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 588 transitions. [2023-09-01 03:39:54,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,588 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 290 flow. Second operand 6 states and 588 transitions. [2023-09-01 03:39:54,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 619 flow [2023-09-01 03:39:54,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 601 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-09-01 03:39:54,595 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 397 flow [2023-09-01 03:39:54,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-09-01 03:39:54,595 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-09-01 03:39:54,596 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 397 flow [2023-09-01 03:39:54,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:54,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:54,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 03:39:54,597 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:54,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash -18309602, now seen corresponding path program 1 times [2023-09-01 03:39:54,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:54,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347532544] [2023-09-01 03:39:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:54,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347532544] [2023-09-01 03:39:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347532544] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:54,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:54,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 03:39:54,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339633790] [2023-09-01 03:39:54,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:39:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:39:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:39:54,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-09-01 03:39:54,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:54,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:54,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-09-01 03:39:54,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:55,104 INFO L130 PetriNetUnfolder]: 1150/1833 cut-off events. [2023-09-01 03:39:55,105 INFO L131 PetriNetUnfolder]: For 6869/6869 co-relation queries the response was YES. [2023-09-01 03:39:55,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 1833 events. 1150/1833 cut-off events. For 6869/6869 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8632 event pairs, 369 based on Foata normal form. 38/1871 useless extension candidates. Maximal degree in co-relation 7330. Up to 1027 conditions per place. [2023-09-01 03:39:55,118 INFO L137 encePairwiseOnDemand]: 198/205 looper letters, 71 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2023-09-01 03:39:55,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 794 flow [2023-09-01 03:39:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 03:39:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 03:39:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2023-09-01 03:39:55,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49365853658536585 [2023-09-01 03:39:55,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2023-09-01 03:39:55,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2023-09-01 03:39:55,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:55,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2023-09-01 03:39:55,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,125 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 397 flow. Second operand 5 states and 506 transitions. [2023-09-01 03:39:55,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 794 flow [2023-09-01 03:39:55,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 757 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-09-01 03:39:55,143 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 515 flow [2023-09-01 03:39:55,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=515, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-09-01 03:39:55,144 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-09-01 03:39:55,144 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 515 flow [2023-09-01 03:39:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:55,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:55,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 03:39:55,145 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:55,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash -293890740, now seen corresponding path program 2 times [2023-09-01 03:39:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:55,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209524032] [2023-09-01 03:39:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209524032] [2023-09-01 03:39:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209524032] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:55,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:55,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 03:39:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919627383] [2023-09-01 03:39:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:39:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:39:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:39:55,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 03:39:55,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 515 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:55,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 03:39:55,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:55,787 INFO L130 PetriNetUnfolder]: 1528/2436 cut-off events. [2023-09-01 03:39:55,787 INFO L131 PetriNetUnfolder]: For 15179/15179 co-relation queries the response was YES. [2023-09-01 03:39:55,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11221 conditions, 2436 events. 1528/2436 cut-off events. For 15179/15179 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12459 event pairs, 252 based on Foata normal form. 28/2464 useless extension candidates. Maximal degree in co-relation 11200. Up to 994 conditions per place. [2023-09-01 03:39:55,807 INFO L137 encePairwiseOnDemand]: 197/205 looper letters, 112 selfloop transitions, 62 changer transitions 9/183 dead transitions. [2023-09-01 03:39:55,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 183 transitions, 1980 flow [2023-09-01 03:39:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 03:39:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 03:39:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 597 transitions. [2023-09-01 03:39:55,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853658536585366 [2023-09-01 03:39:55,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 597 transitions. [2023-09-01 03:39:55,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 597 transitions. [2023-09-01 03:39:55,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:55,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 597 transitions. [2023-09-01 03:39:55,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,814 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 515 flow. Second operand 6 states and 597 transitions. [2023-09-01 03:39:55,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 183 transitions, 1980 flow [2023-09-01 03:39:55,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 183 transitions, 1872 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:55,858 INFO L231 Difference]: Finished difference. Result has 74 places, 114 transitions, 1344 flow [2023-09-01 03:39:55,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1344, PETRI_PLACES=74, PETRI_TRANSITIONS=114} [2023-09-01 03:39:55,859 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-09-01 03:39:55,859 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 114 transitions, 1344 flow [2023-09-01 03:39:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:55,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:55,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:55,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 03:39:55,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:55,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash -727404288, now seen corresponding path program 1 times [2023-09-01 03:39:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521009713] [2023-09-01 03:39:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:56,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:56,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521009713] [2023-09-01 03:39:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521009713] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:56,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:56,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 03:39:56,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679967584] [2023-09-01 03:39:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:56,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:39:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:39:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:39:56,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 03:39:56,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 114 transitions, 1344 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:56,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:56,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 03:39:56,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:56,429 INFO L130 PetriNetUnfolder]: 1598/2577 cut-off events. [2023-09-01 03:39:56,429 INFO L131 PetriNetUnfolder]: For 18880/19095 co-relation queries the response was YES. [2023-09-01 03:39:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13882 conditions, 2577 events. 1598/2577 cut-off events. For 18880/19095 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13830 event pairs, 235 based on Foata normal form. 307/2874 useless extension candidates. Maximal degree in co-relation 13857. Up to 1829 conditions per place. [2023-09-01 03:39:56,454 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 139 selfloop transitions, 22 changer transitions 5/170 dead transitions. [2023-09-01 03:39:56,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 170 transitions, 2167 flow [2023-09-01 03:39:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 03:39:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 03:39:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2023-09-01 03:39:56,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48390243902439023 [2023-09-01 03:39:56,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2023-09-01 03:39:56,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2023-09-01 03:39:56,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:56,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2023-09-01 03:39:56,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:56,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:56,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:56,460 INFO L175 Difference]: Start difference. First operand has 74 places, 114 transitions, 1344 flow. Second operand 5 states and 496 transitions. [2023-09-01 03:39:56,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 170 transitions, 2167 flow [2023-09-01 03:39:56,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 2167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 03:39:56,504 INFO L231 Difference]: Finished difference. Result has 79 places, 117 transitions, 1434 flow [2023-09-01 03:39:56,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1434, PETRI_PLACES=79, PETRI_TRANSITIONS=117} [2023-09-01 03:39:56,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-09-01 03:39:56,505 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 117 transitions, 1434 flow [2023-09-01 03:39:56,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:56,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:56,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 03:39:56,506 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:56,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1318677548, now seen corresponding path program 3 times [2023-09-01 03:39:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547874116] [2023-09-01 03:39:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:56,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:56,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:56,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547874116] [2023-09-01 03:39:56,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547874116] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:39:56,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:39:56,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 03:39:56,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728559817] [2023-09-01 03:39:56,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:56,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:39:56,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:56,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:39:56,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:39:56,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 03:39:56,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 117 transitions, 1434 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:56,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:56,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 03:39:56,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:57,290 INFO L130 PetriNetUnfolder]: 1936/3114 cut-off events. [2023-09-01 03:39:57,290 INFO L131 PetriNetUnfolder]: For 21931/21931 co-relation queries the response was YES. [2023-09-01 03:39:57,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16796 conditions, 3114 events. 1936/3114 cut-off events. For 21931/21931 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16620 event pairs, 519 based on Foata normal form. 34/3148 useless extension candidates. Maximal degree in co-relation 16769. Up to 1594 conditions per place. [2023-09-01 03:39:57,317 INFO L137 encePairwiseOnDemand]: 197/205 looper letters, 90 selfloop transitions, 86 changer transitions 7/183 dead transitions. [2023-09-01 03:39:57,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 183 transitions, 2263 flow [2023-09-01 03:39:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 03:39:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 03:39:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 596 transitions. [2023-09-01 03:39:57,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845528455284553 [2023-09-01 03:39:57,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 596 transitions. [2023-09-01 03:39:57,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 596 transitions. [2023-09-01 03:39:57,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:57,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 596 transitions. [2023-09-01 03:39:57,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:57,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:57,324 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:57,324 INFO L175 Difference]: Start difference. First operand has 79 places, 117 transitions, 1434 flow. Second operand 6 states and 596 transitions. [2023-09-01 03:39:57,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 183 transitions, 2263 flow [2023-09-01 03:39:57,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 183 transitions, 2237 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 03:39:57,376 INFO L231 Difference]: Finished difference. Result has 86 places, 126 transitions, 1809 flow [2023-09-01 03:39:57,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1809, PETRI_PLACES=86, PETRI_TRANSITIONS=126} [2023-09-01 03:39:57,376 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2023-09-01 03:39:57,376 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 126 transitions, 1809 flow [2023-09-01 03:39:57,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:57,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:57,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:57,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 03:39:57,377 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:57,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1610920218, now seen corresponding path program 4 times [2023-09-01 03:39:57,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:57,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559603656] [2023-09-01 03:39:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559603656] [2023-09-01 03:39:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559603656] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:39:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288742694] [2023-09-01 03:39:57,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 03:39:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:39:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:39:57,610 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) [2023-09-01 03:39:57,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 03:39:57,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 03:39:57,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:39:57,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 03:39:57,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:39:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:57,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:39:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:58,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288742694] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 03:39:58,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:39:58,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 13 [2023-09-01 03:39:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937720760] [2023-09-01 03:39:58,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:39:58,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 03:39:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:39:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 03:39:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-09-01 03:39:58,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 205 [2023-09-01 03:39:58,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 126 transitions, 1809 flow. Second operand has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 6 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:58,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:39:58,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 205 [2023-09-01 03:39:58,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:39:59,082 INFO L130 PetriNetUnfolder]: 3322/5411 cut-off events. [2023-09-01 03:39:59,083 INFO L131 PetriNetUnfolder]: For 47678/47678 co-relation queries the response was YES. [2023-09-01 03:39:59,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31615 conditions, 5411 events. 3322/5411 cut-off events. For 47678/47678 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32867 event pairs, 277 based on Foata normal form. 28/5439 useless extension candidates. Maximal degree in co-relation 31585. Up to 1684 conditions per place. [2023-09-01 03:39:59,143 INFO L137 encePairwiseOnDemand]: 193/205 looper letters, 130 selfloop transitions, 167 changer transitions 1/298 dead transitions. [2023-09-01 03:39:59,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 298 transitions, 4314 flow [2023-09-01 03:39:59,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 03:39:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 03:39:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2023-09-01 03:39:59,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2023-09-01 03:39:59,146 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2023-09-01 03:39:59,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2023-09-01 03:39:59,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:39:59,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2023-09-01 03:39:59,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:59,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:59,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:59,151 INFO L175 Difference]: Start difference. First operand has 86 places, 126 transitions, 1809 flow. Second operand 7 states and 680 transitions. [2023-09-01 03:39:59,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 298 transitions, 4314 flow [2023-09-01 03:39:59,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 298 transitions, 4306 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-09-01 03:39:59,295 INFO L231 Difference]: Finished difference. Result has 98 places, 218 transitions, 3884 flow [2023-09-01 03:39:59,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3884, PETRI_PLACES=98, PETRI_TRANSITIONS=218} [2023-09-01 03:39:59,296 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2023-09-01 03:39:59,296 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 218 transitions, 3884 flow [2023-09-01 03:39:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 6 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:39:59,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:39:59,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:39:59,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 03:39:59,503 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,SelfDestructingSolverStorable15 [2023-09-01 03:39:59,503 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:39:59,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:39:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1335640178, now seen corresponding path program 5 times [2023-09-01 03:39:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:39:59,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993523240] [2023-09-01 03:39:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:39:59,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:39:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:39:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:39:59,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:39:59,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993523240] [2023-09-01 03:39:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993523240] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:39:59,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270130321] [2023-09-01 03:39:59,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 03:39:59,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:39:59,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:39:59,720 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) [2023-09-01 03:39:59,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 03:39:59,804 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 03:39:59,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:39:59,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 03:39:59,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:40:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:00,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:40:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270130321] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:40:00,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 03:40:00,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 03:40:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312532085] [2023-09-01 03:40:00,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 03:40:00,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 03:40:00,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 03:40:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-09-01 03:40:00,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 205 [2023-09-01 03:40:00,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 218 transitions, 3884 flow. Second operand has 13 states, 13 states have (on average 87.61538461538461) internal successors, (1139), 13 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:00,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:00,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 205 [2023-09-01 03:40:00,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:01,994 INFO L130 PetriNetUnfolder]: 4704/7488 cut-off events. [2023-09-01 03:40:01,994 INFO L131 PetriNetUnfolder]: For 95389/95389 co-relation queries the response was YES. [2023-09-01 03:40:02,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51511 conditions, 7488 events. 4704/7488 cut-off events. For 95389/95389 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 45748 event pairs, 303 based on Foata normal form. 89/7577 useless extension candidates. Maximal degree in co-relation 51475. Up to 2387 conditions per place. [2023-09-01 03:40:02,080 INFO L137 encePairwiseOnDemand]: 194/205 looper letters, 190 selfloop transitions, 268 changer transitions 22/480 dead transitions. [2023-09-01 03:40:02,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 480 transitions, 7762 flow [2023-09-01 03:40:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 03:40:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 03:40:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1545 transitions. [2023-09-01 03:40:02,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47103658536585363 [2023-09-01 03:40:02,086 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1545 transitions. [2023-09-01 03:40:02,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1545 transitions. [2023-09-01 03:40:02,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:02,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1545 transitions. [2023-09-01 03:40:02,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 96.5625) internal successors, (1545), 16 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:02,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 205.0) internal successors, (3485), 17 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:02,097 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 205.0) internal successors, (3485), 17 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:02,097 INFO L175 Difference]: Start difference. First operand has 98 places, 218 transitions, 3884 flow. Second operand 16 states and 1545 transitions. [2023-09-01 03:40:02,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 480 transitions, 7762 flow [2023-09-01 03:40:02,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 480 transitions, 7662 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-09-01 03:40:02,400 INFO L231 Difference]: Finished difference. Result has 122 places, 322 transitions, 6668 flow [2023-09-01 03:40:02,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6668, PETRI_PLACES=122, PETRI_TRANSITIONS=322} [2023-09-01 03:40:02,401 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2023-09-01 03:40:02,401 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 322 transitions, 6668 flow [2023-09-01 03:40:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.61538461538461) internal successors, (1139), 13 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:02,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:40:02,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:40:02,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 03:40:02,607 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,SelfDestructingSolverStorable16 [2023-09-01 03:40:02,607 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:40:02,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:40:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash -286692026, now seen corresponding path program 6 times [2023-09-01 03:40:02,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:40:02,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947300125] [2023-09-01 03:40:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:40:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:02,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:40:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947300125] [2023-09-01 03:40:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947300125] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:40:02,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:40:02,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 03:40:02,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106639055] [2023-09-01 03:40:02,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:40:02,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:40:02,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:02,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:40:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:40:02,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-09-01 03:40:02,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 322 transitions, 6668 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:02,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:02,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-09-01 03:40:02,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:04,131 INFO L130 PetriNetUnfolder]: 4887/7820 cut-off events. [2023-09-01 03:40:04,131 INFO L131 PetriNetUnfolder]: For 141148/141171 co-relation queries the response was YES. [2023-09-01 03:40:04,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60274 conditions, 7820 events. 4887/7820 cut-off events. For 141148/141171 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 47976 event pairs, 1035 based on Foata normal form. 246/8066 useless extension candidates. Maximal degree in co-relation 60229. Up to 5721 conditions per place. [2023-09-01 03:40:04,223 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 219 selfloop transitions, 40 changer transitions 13/405 dead transitions. [2023-09-01 03:40:04,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 405 transitions, 8388 flow [2023-09-01 03:40:04,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 03:40:04,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 03:40:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2023-09-01 03:40:04,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49073170731707316 [2023-09-01 03:40:04,226 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2023-09-01 03:40:04,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2023-09-01 03:40:04,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:04,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2023-09-01 03:40:04,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:04,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:04,229 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:04,229 INFO L175 Difference]: Start difference. First operand has 122 places, 322 transitions, 6668 flow. Second operand 5 states and 503 transitions. [2023-09-01 03:40:04,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 405 transitions, 8388 flow [2023-09-01 03:40:04,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 405 transitions, 8151 flow, removed 57 selfloop flow, removed 4 redundant places. [2023-09-01 03:40:04,664 INFO L231 Difference]: Finished difference. Result has 124 places, 335 transitions, 6810 flow [2023-09-01 03:40:04,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6471, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6810, PETRI_PLACES=124, PETRI_TRANSITIONS=335} [2023-09-01 03:40:04,664 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2023-09-01 03:40:04,664 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 335 transitions, 6810 flow [2023-09-01 03:40:04,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:04,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:40:04,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:40:04,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 03:40:04,665 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:40:04,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:40:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1279838736, now seen corresponding path program 7 times [2023-09-01 03:40:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:40:04,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51899995] [2023-09-01 03:40:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:40:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:04,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:40:04,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51899995] [2023-09-01 03:40:04,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51899995] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:40:04,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:40:04,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 03:40:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886423380] [2023-09-01 03:40:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:40:04,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:40:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:40:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:40:04,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-09-01 03:40:04,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 335 transitions, 6810 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:04,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:04,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-09-01 03:40:04,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:06,240 INFO L130 PetriNetUnfolder]: 4791/7619 cut-off events. [2023-09-01 03:40:06,241 INFO L131 PetriNetUnfolder]: For 137632/137670 co-relation queries the response was YES. [2023-09-01 03:40:06,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59828 conditions, 7619 events. 4791/7619 cut-off events. For 137632/137670 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 46412 event pairs, 1007 based on Foata normal form. 40/7654 useless extension candidates. Maximal degree in co-relation 59782. Up to 6682 conditions per place. [2023-09-01 03:40:06,307 INFO L137 encePairwiseOnDemand]: 198/205 looper letters, 207 selfloop transitions, 21 changer transitions 18/379 dead transitions. [2023-09-01 03:40:06,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 379 transitions, 7739 flow [2023-09-01 03:40:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 03:40:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 03:40:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2023-09-01 03:40:06,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48097560975609754 [2023-09-01 03:40:06,310 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2023-09-01 03:40:06,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2023-09-01 03:40:06,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:06,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2023-09-01 03:40:06,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:06,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:06,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:06,314 INFO L175 Difference]: Start difference. First operand has 124 places, 335 transitions, 6810 flow. Second operand 5 states and 493 transitions. [2023-09-01 03:40:06,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 379 transitions, 7739 flow [2023-09-01 03:40:06,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 379 transitions, 7555 flow, removed 44 selfloop flow, removed 2 redundant places. [2023-09-01 03:40:06,611 INFO L231 Difference]: Finished difference. Result has 128 places, 336 transitions, 6725 flow [2023-09-01 03:40:06,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6629, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6725, PETRI_PLACES=128, PETRI_TRANSITIONS=336} [2023-09-01 03:40:06,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2023-09-01 03:40:06,612 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 336 transitions, 6725 flow [2023-09-01 03:40:06,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:06,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:40:06,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:40:06,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 03:40:06,612 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:40:06,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:40:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2093451750, now seen corresponding path program 8 times [2023-09-01 03:40:06,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:40:06,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093396732] [2023-09-01 03:40:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:40:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:06,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:40:06,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093396732] [2023-09-01 03:40:06,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093396732] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:40:06,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:40:06,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 03:40:06,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633064765] [2023-09-01 03:40:06,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:40:06,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:40:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:06,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:40:06,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:40:06,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 03:40:06,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 336 transitions, 6725 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:06,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:06,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 03:40:06,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:08,260 INFO L130 PetriNetUnfolder]: 4928/7806 cut-off events. [2023-09-01 03:40:08,260 INFO L131 PetriNetUnfolder]: For 138753/138773 co-relation queries the response was YES. [2023-09-01 03:40:08,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61004 conditions, 7806 events. 4928/7806 cut-off events. For 138753/138773 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 47387 event pairs, 1033 based on Foata normal form. 10/7815 useless extension candidates. Maximal degree in co-relation 60957. Up to 6657 conditions per place. [2023-09-01 03:40:08,349 INFO L137 encePairwiseOnDemand]: 198/205 looper letters, 217 selfloop transitions, 24 changer transitions 13/383 dead transitions. [2023-09-01 03:40:08,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 383 transitions, 7668 flow [2023-09-01 03:40:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 03:40:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 03:40:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-09-01 03:40:08,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772357723577236 [2023-09-01 03:40:08,354 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-09-01 03:40:08,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-09-01 03:40:08,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:08,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-09-01 03:40:08,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:08,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:08,360 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:08,360 INFO L175 Difference]: Start difference. First operand has 128 places, 336 transitions, 6725 flow. Second operand 6 states and 587 transitions. [2023-09-01 03:40:08,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 383 transitions, 7668 flow [2023-09-01 03:40:08,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 383 transitions, 7535 flow, removed 34 selfloop flow, removed 5 redundant places. [2023-09-01 03:40:08,712 INFO L231 Difference]: Finished difference. Result has 128 places, 330 transitions, 6531 flow [2023-09-01 03:40:08,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6531, PETRI_PLACES=128, PETRI_TRANSITIONS=330} [2023-09-01 03:40:08,713 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2023-09-01 03:40:08,713 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 330 transitions, 6531 flow [2023-09-01 03:40:08,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:08,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:40:08,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:40:08,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 03:40:08,714 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:40:08,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:40:08,714 INFO L85 PathProgramCache]: Analyzing trace with hash -35328729, now seen corresponding path program 1 times [2023-09-01 03:40:08,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:40:08,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380158022] [2023-09-01 03:40:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:08,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:40:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:09,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:40:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380158022] [2023-09-01 03:40:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380158022] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:40:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409405174] [2023-09-01 03:40:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:09,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:40:09,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:40:09,003 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) [2023-09-01 03:40:09,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 03:40:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 03:40:09,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:40:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:09,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:40:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:09,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409405174] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:40:09,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 03:40:09,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-09-01 03:40:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89730272] [2023-09-01 03:40:09,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 03:40:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 03:40:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 03:40:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 03:40:09,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 205 [2023-09-01 03:40:09,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 330 transitions, 6531 flow. Second operand has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:09,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:09,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 205 [2023-09-01 03:40:09,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:11,562 INFO L130 PetriNetUnfolder]: 6286/10787 cut-off events. [2023-09-01 03:40:11,562 INFO L131 PetriNetUnfolder]: For 198813/200307 co-relation queries the response was YES. [2023-09-01 03:40:11,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84121 conditions, 10787 events. 6286/10787 cut-off events. For 198813/200307 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 80650 event pairs, 313 based on Foata normal form. 694/11427 useless extension candidates. Maximal degree in co-relation 84075. Up to 5148 conditions per place. [2023-09-01 03:40:11,676 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 267 selfloop transitions, 217 changer transitions 6/636 dead transitions. [2023-09-01 03:40:11,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 636 transitions, 12866 flow [2023-09-01 03:40:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 03:40:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 03:40:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 871 transitions. [2023-09-01 03:40:11,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47208672086720865 [2023-09-01 03:40:11,679 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 871 transitions. [2023-09-01 03:40:11,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 871 transitions. [2023-09-01 03:40:11,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:11,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 871 transitions. [2023-09-01 03:40:11,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:11,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:11,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:11,684 INFO L175 Difference]: Start difference. First operand has 128 places, 330 transitions, 6531 flow. Second operand 9 states and 871 transitions. [2023-09-01 03:40:11,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 636 transitions, 12866 flow [2023-09-01 03:40:12,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 636 transitions, 12448 flow, removed 55 selfloop flow, removed 7 redundant places. [2023-09-01 03:40:12,260 INFO L231 Difference]: Finished difference. Result has 130 places, 516 transitions, 11049 flow [2023-09-01 03:40:12,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6265, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11049, PETRI_PLACES=130, PETRI_TRANSITIONS=516} [2023-09-01 03:40:12,261 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2023-09-01 03:40:12,261 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 516 transitions, 11049 flow [2023-09-01 03:40:12,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:12,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:40:12,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:40:12,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 03:40:12,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:40:12,470 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:40:12,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:40:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash 4874269, now seen corresponding path program 2 times [2023-09-01 03:40:12,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:40:12,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603262978] [2023-09-01 03:40:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:12,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:40:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:12,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:40:12,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603262978] [2023-09-01 03:40:12,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603262978] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:40:12,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083010411] [2023-09-01 03:40:12,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 03:40:12,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:40:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:40:12,775 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) [2023-09-01 03:40:12,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 03:40:12,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 03:40:12,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:40:12,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 03:40:12,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:40:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:12,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:40:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083010411] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:40:13,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 03:40:13,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-09-01 03:40:13,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982483374] [2023-09-01 03:40:13,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 03:40:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 03:40:13,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 03:40:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-09-01 03:40:13,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 205 [2023-09-01 03:40:13,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 516 transitions, 11049 flow. Second operand has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:13,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:13,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 205 [2023-09-01 03:40:13,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:16,023 INFO L130 PetriNetUnfolder]: 7189/12287 cut-off events. [2023-09-01 03:40:16,024 INFO L131 PetriNetUnfolder]: For 238309/239877 co-relation queries the response was YES. [2023-09-01 03:40:16,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100013 conditions, 12287 events. 7189/12287 cut-off events. For 238309/239877 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 93369 event pairs, 465 based on Foata normal form. 836/13070 useless extension candidates. Maximal degree in co-relation 99966. Up to 8315 conditions per place. [2023-09-01 03:40:16,121 INFO L137 encePairwiseOnDemand]: 198/205 looper letters, 532 selfloop transitions, 219 changer transitions 6/774 dead transitions. [2023-09-01 03:40:16,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 774 transitions, 17333 flow [2023-09-01 03:40:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 03:40:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 03:40:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1000 transitions. [2023-09-01 03:40:16,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434589800443459 [2023-09-01 03:40:16,124 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1000 transitions. [2023-09-01 03:40:16,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1000 transitions. [2023-09-01 03:40:16,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:16,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1000 transitions. [2023-09-01 03:40:16,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.9090909090909) internal successors, (1000), 11 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:16,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:16,129 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:16,129 INFO L175 Difference]: Start difference. First operand has 130 places, 516 transitions, 11049 flow. Second operand 11 states and 1000 transitions. [2023-09-01 03:40:16,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 774 transitions, 17333 flow [2023-09-01 03:40:16,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 774 transitions, 16682 flow, removed 316 selfloop flow, removed 1 redundant places. [2023-09-01 03:40:16,770 INFO L231 Difference]: Finished difference. Result has 144 places, 619 transitions, 13495 flow [2023-09-01 03:40:16,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=10486, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13495, PETRI_PLACES=144, PETRI_TRANSITIONS=619} [2023-09-01 03:40:16,771 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2023-09-01 03:40:16,771 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 619 transitions, 13495 flow [2023-09-01 03:40:16,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:16,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:40:16,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:40:16,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 03:40:16,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:40:16,972 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:40:16,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:40:16,973 INFO L85 PathProgramCache]: Analyzing trace with hash 824336521, now seen corresponding path program 1 times [2023-09-01 03:40:16,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:40:16,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802900933] [2023-09-01 03:40:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:16,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:40:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:40:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802900933] [2023-09-01 03:40:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802900933] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:40:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956191581] [2023-09-01 03:40:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:40:17,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:40:17,177 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) [2023-09-01 03:40:17,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 03:40:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:17,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 03:40:17,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:40:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:17,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:40:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956191581] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:40:18,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 03:40:18,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-09-01 03:40:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471899162] [2023-09-01 03:40:18,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 03:40:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 03:40:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 03:40:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-09-01 03:40:18,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 205 [2023-09-01 03:40:18,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 619 transitions, 13495 flow. Second operand has 20 states, 20 states have (on average 84.5) internal successors, (1690), 20 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:18,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:18,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 205 [2023-09-01 03:40:18,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:27,605 INFO L130 PetriNetUnfolder]: 19989/32682 cut-off events. [2023-09-01 03:40:27,605 INFO L131 PetriNetUnfolder]: For 672685/672685 co-relation queries the response was YES. [2023-09-01 03:40:27,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264828 conditions, 32682 events. 19989/32682 cut-off events. For 672685/672685 co-relation queries the response was YES. Maximal size of possible extension queue 1630. Compared 260885 event pairs, 819 based on Foata normal form. 1994/34676 useless extension candidates. Maximal degree in co-relation 264775. Up to 7667 conditions per place. [2023-09-01 03:40:27,949 INFO L137 encePairwiseOnDemand]: 194/205 looper letters, 972 selfloop transitions, 1746 changer transitions 1/2719 dead transitions. [2023-09-01 03:40:27,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 2719 transitions, 57245 flow [2023-09-01 03:40:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-09-01 03:40:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-09-01 03:40:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 5219 transitions. [2023-09-01 03:40:27,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454616724738676 [2023-09-01 03:40:27,962 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 5219 transitions. [2023-09-01 03:40:27,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 5219 transitions. [2023-09-01 03:40:27,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:27,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 5219 transitions. [2023-09-01 03:40:27,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 93.19642857142857) internal successors, (5219), 56 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:27,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 205.0) internal successors, (11685), 57 states have internal predecessors, (11685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:27,991 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 205.0) internal successors, (11685), 57 states have internal predecessors, (11685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:27,991 INFO L175 Difference]: Start difference. First operand has 144 places, 619 transitions, 13495 flow. Second operand 56 states and 5219 transitions. [2023-09-01 03:40:27,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 2719 transitions, 57245 flow [2023-09-01 03:40:30,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 2719 transitions, 56846 flow, removed 187 selfloop flow, removed 2 redundant places. [2023-09-01 03:40:31,040 INFO L231 Difference]: Finished difference. Result has 238 places, 2057 transitions, 49945 flow [2023-09-01 03:40:31,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=13188, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=469, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=49945, PETRI_PLACES=238, PETRI_TRANSITIONS=2057} [2023-09-01 03:40:31,042 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2023-09-01 03:40:31,042 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 2057 transitions, 49945 flow [2023-09-01 03:40:31,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.5) internal successors, (1690), 20 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:31,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:40:31,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:40:31,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 03:40:31,248 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,SelfDestructingSolverStorable22 [2023-09-01 03:40:31,248 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:40:31,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:40:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1181150605, now seen corresponding path program 2 times [2023-09-01 03:40:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:40:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708987829] [2023-09-01 03:40:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:40:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:40:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:40:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:40:31,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708987829] [2023-09-01 03:40:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708987829] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:40:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647151521] [2023-09-01 03:40:31,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 03:40:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:40:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:40:31,467 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) [2023-09-01 03:40:31,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 03:40:31,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 03:40:31,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:40:31,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 03:40:31,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:40:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:31,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:40:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:40:32,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647151521] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:40:32,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 03:40:32,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-09-01 03:40:32,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575579293] [2023-09-01 03:40:32,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 03:40:32,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 03:40:32,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:40:32,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 03:40:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-09-01 03:40:32,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 205 [2023-09-01 03:40:32,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 2057 transitions, 49945 flow. Second operand has 17 states, 17 states have (on average 84.47058823529412) internal successors, (1436), 17 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:32,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:40:32,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 205 [2023-09-01 03:40:32,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:40:52,588 INFO L130 PetriNetUnfolder]: 23910/39569 cut-off events. [2023-09-01 03:40:52,588 INFO L131 PetriNetUnfolder]: For 1189955/1189955 co-relation queries the response was YES. [2023-09-01 03:40:53,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389915 conditions, 39569 events. 23910/39569 cut-off events. For 1189955/1189955 co-relation queries the response was YES. Maximal size of possible extension queue 2071. Compared 329449 event pairs, 594 based on Foata normal form. 324/39893 useless extension candidates. Maximal degree in co-relation 389821. Up to 9113 conditions per place. [2023-09-01 03:40:53,223 INFO L137 encePairwiseOnDemand]: 193/205 looper letters, 1413 selfloop transitions, 2365 changer transitions 8/3786 dead transitions. [2023-09-01 03:40:53,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 3786 transitions, 94541 flow [2023-09-01 03:40:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-09-01 03:40:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-09-01 03:40:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4872 transitions. [2023-09-01 03:40:53,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841233317993556 [2023-09-01 03:40:53,229 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 4872 transitions. [2023-09-01 03:40:53,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 4872 transitions. [2023-09-01 03:40:53,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:40:53,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 4872 transitions. [2023-09-01 03:40:53,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 91.9245283018868) internal successors, (4872), 53 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:53,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 205.0) internal successors, (11070), 54 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:53,249 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 205.0) internal successors, (11070), 54 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:40:53,249 INFO L175 Difference]: Start difference. First operand has 238 places, 2057 transitions, 49945 flow. Second operand 53 states and 4872 transitions. [2023-09-01 03:40:53,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 3786 transitions, 94541 flow [2023-09-01 03:41:17,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 3786 transitions, 86521 flow, removed 3991 selfloop flow, removed 1 redundant places. [2023-09-01 03:41:17,290 INFO L231 Difference]: Finished difference. Result has 330 places, 3189 transitions, 79820 flow [2023-09-01 03:41:17,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=44827, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=79820, PETRI_PLACES=330, PETRI_TRANSITIONS=3189} [2023-09-01 03:41:17,291 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2023-09-01 03:41:17,292 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 3189 transitions, 79820 flow [2023-09-01 03:41:17,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 84.47058823529412) internal successors, (1436), 17 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:41:17,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:41:17,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:41:17,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 03:41:17,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:41:17,497 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:41:17,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:41:17,497 INFO L85 PathProgramCache]: Analyzing trace with hash 293003447, now seen corresponding path program 3 times [2023-09-01 03:41:17,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:41:17,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947997454] [2023-09-01 03:41:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:41:17,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:41:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:41:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:41:17,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:41:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947997454] [2023-09-01 03:41:17,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947997454] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:41:17,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102559478] [2023-09-01 03:41:17,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 03:41:17,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:41:17,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:41:17,694 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) [2023-09-01 03:41:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 03:41:17,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 03:41:17,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:41:17,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 03:41:17,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:41:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:41:18,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:41:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:41:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102559478] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:41:18,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 03:41:18,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 9] total 18 [2023-09-01 03:41:18,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149825020] [2023-09-01 03:41:18,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 03:41:18,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 03:41:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:41:18,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 03:41:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2023-09-01 03:41:18,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 205 [2023-09-01 03:41:18,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 3189 transitions, 79820 flow. Second operand has 19 states, 19 states have (on average 84.42105263157895) internal successors, (1604), 19 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:41:18,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:41:18,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 205 [2023-09-01 03:41:18,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:42:04,721 INFO L130 PetriNetUnfolder]: 34659/57843 cut-off events. [2023-09-01 03:42:04,721 INFO L131 PetriNetUnfolder]: For 2043286/2043286 co-relation queries the response was YES. [2023-09-01 03:42:06,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595317 conditions, 57843 events. 34659/57843 cut-off events. For 2043286/2043286 co-relation queries the response was YES. Maximal size of possible extension queue 2952. Compared 512537 event pairs, 594 based on Foata normal form. 1062/58905 useless extension candidates. Maximal degree in co-relation 595183. Up to 12533 conditions per place. [2023-09-01 03:42:06,549 INFO L137 encePairwiseOnDemand]: 193/205 looper letters, 1807 selfloop transitions, 4019 changer transitions 9/5835 dead transitions. [2023-09-01 03:42:06,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 5835 transitions, 153261 flow [2023-09-01 03:42:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-09-01 03:42:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-09-01 03:42:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5655 transitions. [2023-09-01 03:42:06,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45221911235505796 [2023-09-01 03:42:06,557 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5655 transitions. [2023-09-01 03:42:06,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5655 transitions. [2023-09-01 03:42:06,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:42:06,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5655 transitions. [2023-09-01 03:42:06,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 92.70491803278688) internal successors, (5655), 61 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:42:06,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 205.0) internal successors, (12710), 62 states have internal predecessors, (12710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:42:06,580 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 205.0) internal successors, (12710), 62 states have internal predecessors, (12710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:42:06,580 INFO L175 Difference]: Start difference. First operand has 330 places, 3189 transitions, 79820 flow. Second operand 61 states and 5655 transitions. [2023-09-01 03:42:06,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 5835 transitions, 153261 flow [2023-09-01 03:43:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 5835 transitions, 149205 flow, removed 1579 selfloop flow, removed 5 redundant places. [2023-09-01 03:43:20,769 INFO L231 Difference]: Finished difference. Result has 432 places, 4980 transitions, 138402 flow [2023-09-01 03:43:20,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=76675, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=138402, PETRI_PLACES=432, PETRI_TRANSITIONS=4980} [2023-09-01 03:43:20,773 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2023-09-01 03:43:20,773 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 4980 transitions, 138402 flow [2023-09-01 03:43:20,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.42105263157895) internal successors, (1604), 19 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:43:20,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:43:20,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:43:20,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 03:43:20,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:43:20,975 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 03:43:20,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:43:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -191346289, now seen corresponding path program 4 times [2023-09-01 03:43:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 03:43:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178362712] [2023-09-01 03:43:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:43:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 03:43:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:43:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:43:21,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 03:43:21,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178362712] [2023-09-01 03:43:21,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178362712] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 03:43:21,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90307327] [2023-09-01 03:43:21,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 03:43:21,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 03:43:21,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:43:21,160 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) [2023-09-01 03:43:21,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 03:43:21,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 03:43:21,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:43:21,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 03:43:21,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:43:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:43:21,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:43:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:43:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90307327] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:43:21,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 03:43:21,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 9] total 17 [2023-09-01 03:43:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114786671] [2023-09-01 03:43:21,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 03:43:21,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 03:43:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 03:43:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 03:43:21,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-09-01 03:43:21,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 205 [2023-09-01 03:43:21,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 4980 transitions, 138402 flow. Second operand has 18 states, 18 states have (on average 84.38888888888889) internal successors, (1519), 18 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:43:21,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:43:21,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 205 [2023-09-01 03:43:21,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:46:04,392 INFO L130 PetriNetUnfolder]: 73425/122989 cut-off events. [2023-09-01 03:46:04,393 INFO L131 PetriNetUnfolder]: For 5554297/5554297 co-relation queries the response was YES. [2023-09-01 03:46:10,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441029 conditions, 122989 events. 73425/122989 cut-off events. For 5554297/5554297 co-relation queries the response was YES. Maximal size of possible extension queue 6535. Compared 1208841 event pairs, 1405 based on Foata normal form. 3036/126025 useless extension candidates. Maximal degree in co-relation 1440851. Up to 25745 conditions per place. [2023-09-01 03:46:10,954 INFO L137 encePairwiseOnDemand]: 193/205 looper letters, 3123 selfloop transitions, 10147 changer transitions 50/13320 dead transitions. [2023-09-01 03:46:10,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 13320 transitions, 387704 flow [2023-09-01 03:46:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-09-01 03:46:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2023-09-01 03:46:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 11484 transitions. [2023-09-01 03:46:10,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45544318857822724 [2023-09-01 03:46:10,968 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 11484 transitions. [2023-09-01 03:46:10,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 11484 transitions. [2023-09-01 03:46:10,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:46:10,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 11484 transitions. [2023-09-01 03:46:10,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 93.36585365853658) internal successors, (11484), 123 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:46:11,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 205.0) internal successors, (25420), 124 states have internal predecessors, (25420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:46:11,008 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 205.0) internal successors, (25420), 124 states have internal predecessors, (25420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:46:11,008 INFO L175 Difference]: Start difference. First operand has 432 places, 4980 transitions, 138402 flow. Second operand 123 states and 11484 transitions. [2023-09-01 03:46:11,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 13320 transitions, 387704 flow Killed by 15