./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/pthread/triangular-longer-2.i -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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:44:56,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:44:56,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:44:56,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:44:56,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:44:56,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:44:56,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:44:56,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:44:56,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:44:56,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:44:56,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:44:56,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:44:56,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:44:56,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:44:56,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:44:56,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:44:56,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:44:56,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:44:56,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:44:56,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:44:56,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:44:56,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:44:56,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:44:56,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:44:56,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:44:56,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:44:56,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:44:56,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:44:56,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:44:56,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:44:56,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:44:56,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:44:56,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:44:56,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:44:56,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:44:56,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:44:56,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:44:56,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:44:56,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:44:56,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:44:56,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:44:56,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:44:56,199 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:44:56,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:44:56,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:44:56,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:44:56,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:44:56,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:44:56,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:44:56,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:44:56,202 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:44:56,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:44:56,203 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:44:56,203 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:44:56,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:44:56,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:44:56,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:44:56,204 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:44:56,204 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:44:56,204 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:44:56,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:44:56,205 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:44:56,205 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:44:56,205 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:44:56,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:44:56,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:44:56,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:44:56,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:56,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:44:56,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:44:56,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:44:56,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:44:56,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:44:56,206 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:44:56,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:44:56,207 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:44:56,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:44:56,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:44:56,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:44:56,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:44:56,459 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:44:56,459 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:44:56,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-29 19:44:57,371 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:44:57,562 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:44:57,562 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-29 19:44:57,575 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff8d2ecfe/b0ecbf65b3ac4ae09d362da109a2dc3e/FLAGa2da19486 [2023-08-29 19:44:57,590 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff8d2ecfe/b0ecbf65b3ac4ae09d362da109a2dc3e [2023-08-29 19:44:57,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:44:57,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:44:57,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:57,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:44:57,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:44:57,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d72dbf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57, skipping insertion in model container [2023-08-29 19:44:57,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:44:57,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:44:57,803 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-29 19:44:57,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:57,811 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:44:57,834 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-29 19:44:57,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:57,858 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:44:57,858 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:44:57,862 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:44:57,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57 WrapperNode [2023-08-29 19:44:57,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:57,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:57,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:44:57,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:44:57,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,886 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-29 19:44:57,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:57,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:44:57,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:44:57,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:44:57,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,899 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:44:57,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:44:57,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:44:57,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:44:57,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (1/1) ... [2023-08-29 19:44:57,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:57,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:57,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:44:57,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:44:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-29 19:44:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-29 19:44:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-29 19:44:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-29 19:44:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:44:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:44:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:44:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:44:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:44:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:44:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:44:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:44:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:44:57,957 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:44:58,049 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:44:58,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:44:58,172 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:44:58,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:44:58,176 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 19:44:58,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:58 BoogieIcfgContainer [2023-08-29 19:44:58,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:44:58,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:44:58,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:44:58,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:44:58,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:44:57" (1/3) ... [2023-08-29 19:44:58,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5fd7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:58, skipping insertion in model container [2023-08-29 19:44:58,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:57" (2/3) ... [2023-08-29 19:44:58,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5fd7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:58, skipping insertion in model container [2023-08-29 19:44:58,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:58" (3/3) ... [2023-08-29 19:44:58,183 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-08-29 19:44:58,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:44:58,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 19:44:58,193 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:44:58,235 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 19:44:58,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 158 flow [2023-08-29 19:44:58,276 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-29 19:44:58,276 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:58,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:44:58,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 158 flow [2023-08-29 19:44:58,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:58,284 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:44:58,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:58,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:58,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:58,313 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-29 19:44:58,314 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:58,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:44:58,315 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-29 19:45:00,279 INFO L134 LiptonReduction]: Checked pairs total: 1104 [2023-08-29 19:45:00,279 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-29 19:45:00,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:45:00,292 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;@670b2d33, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:45:00,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 19:45:00,293 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:45:00,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:00,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:00,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:45:00,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:00,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash 294, now seen corresponding path program 1 times [2023-08-29 19:45:00,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331503220] [2023-08-29 19:45:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:00,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:00,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331503220] [2023-08-29 19:45:00,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331503220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:00,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:45:00,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016542891] [2023-08-29 19:45:00,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:00,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:45:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:45:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:45:00,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2023-08-29 19:45:00,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:00,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2023-08-29 19:45:00,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:00,437 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-29 19:45:00,437 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:45:00,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-29 19:45:00,439 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-29 19:45:00,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-29 19:45:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:45:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:45:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2023-08-29 19:45:00,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-29 19:45:00,447 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2023-08-29 19:45:00,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2023-08-29 19:45:00,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:00,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2023-08-29 19:45:00,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,457 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,458 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 156 transitions. [2023-08-29 19:45:00,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-29 19:45:00,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:00,461 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-29 19:45:00,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-29 19:45:00,465 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:45:00,465 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-29 19:45:00,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:00,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:45:00,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:45:00,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:00,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash 286821, now seen corresponding path program 1 times [2023-08-29 19:45:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:00,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359308101] [2023-08-29 19:45:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:00,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359308101] [2023-08-29 19:45:00,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359308101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:00,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:00,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:45:00,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12038743] [2023-08-29 19:45:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:00,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:45:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:45:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:45:00,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-08-29 19:45:00,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:00,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-08-29 19:45:00,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:00,705 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-29 19:45:00,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:00,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 348 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2023-08-29 19:45:00,707 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-29 19:45:00,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-29 19:45:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:45:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:45:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-29 19:45:00,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-29 19:45:00,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-29 19:45:00,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-29 19:45:00,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:00,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-29 19:45:00,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,716 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 214 transitions. [2023-08-29 19:45:00,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-29 19:45:00,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:00,717 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-29 19:45:00,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-29 19:45:00,718 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:45:00,718 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-29 19:45:00,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:00,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:45:00,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:45:00,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:00,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash 286820, now seen corresponding path program 1 times [2023-08-29 19:45:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:00,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057980344] [2023-08-29 19:45:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:00,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:00,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:00,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057980344] [2023-08-29 19:45:00,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057980344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:00,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:00,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:45:00,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428124617] [2023-08-29 19:45:00,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:00,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:45:00,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:45:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:45:00,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:00,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:00,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:00,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:00,817 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-29 19:45:00,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:00,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 325 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-29 19:45:00,818 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-29 19:45:00,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-29 19:45:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:45:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:45:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-29 19:45:00,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 19:45:00,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-29 19:45:00,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-29 19:45:00,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:00,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-29 19:45:00,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,822 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 204 transitions. [2023-08-29 19:45:00,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-29 19:45:00,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:00,823 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-29 19:45:00,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 19:45:00,823 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-29 19:45:00,823 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-29 19:45:00,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:00,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 19:45:00,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:45:00,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:00,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash -45115990, now seen corresponding path program 1 times [2023-08-29 19:45:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:00,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673680167] [2023-08-29 19:45:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:00,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:00,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673680167] [2023-08-29 19:45:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673680167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:00,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:00,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:45:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839957561] [2023-08-29 19:45:00,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:00,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:45:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:45:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:45:00,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:00,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:00,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:00,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:01,019 INFO L130 PetriNetUnfolder]: 124/197 cut-off events. [2023-08-29 19:45:01,022 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:45:01,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 197 events. 124/197 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 534 event pairs, 11 based on Foata normal form. 9/155 useless extension candidates. Maximal degree in co-relation 418. Up to 97 conditions per place. [2023-08-29 19:45:01,023 INFO L137 encePairwiseOnDemand]: 140/144 looper letters, 24 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2023-08-29 19:45:01,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 122 flow [2023-08-29 19:45:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:45:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:45:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-29 19:45:01,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809027777777778 [2023-08-29 19:45:01,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-29 19:45:01,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-29 19:45:01,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:01,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-29 19:45:01,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,030 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,030 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 4 states and 277 transitions. [2023-08-29 19:45:01,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 122 flow [2023-08-29 19:45:01,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:01,033 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 57 flow [2023-08-29 19:45:01,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-29 19:45:01,034 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-29 19:45:01,034 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 57 flow [2023-08-29 19:45:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:01,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:01,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:45:01,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:01,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1398595235, now seen corresponding path program 1 times [2023-08-29 19:45:01,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:01,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960179020] [2023-08-29 19:45:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:01,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:01,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:01,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960179020] [2023-08-29 19:45:01,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960179020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:01,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:01,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:45:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892407178] [2023-08-29 19:45:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:01,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:45:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:01,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:45:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:45:01,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 144 [2023-08-29 19:45:01,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:01,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 144 [2023-08-29 19:45:01,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:01,221 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-08-29 19:45:01,221 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-29 19:45:01,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 152 events. 94/152 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 382 event pairs, 35 based on Foata normal form. 15/148 useless extension candidates. Maximal degree in co-relation 373. Up to 107 conditions per place. [2023-08-29 19:45:01,223 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 14 selfloop transitions, 1 changer transitions 8/23 dead transitions. [2023-08-29 19:45:01,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 120 flow [2023-08-29 19:45:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:45:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:45:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2023-08-29 19:45:01,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-29 19:45:01,224 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2023-08-29 19:45:01,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2023-08-29 19:45:01,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:01,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2023-08-29 19:45:01,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,227 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,227 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 57 flow. Second operand 4 states and 256 transitions. [2023-08-29 19:45:01,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 120 flow [2023-08-29 19:45:01,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:01,229 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 55 flow [2023-08-29 19:45:01,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2023-08-29 19:45:01,230 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-29 19:45:01,230 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 55 flow [2023-08-29 19:45:01,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:01,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:01,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:45:01,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:01,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -407213147, now seen corresponding path program 1 times [2023-08-29 19:45:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:01,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112682503] [2023-08-29 19:45:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:01,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:01,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112682503] [2023-08-29 19:45:01,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112682503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:01,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417466153] [2023-08-29 19:45:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:01,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:01,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:01,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:01,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:01,359 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-08-29 19:45:01,359 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-29 19:45:01,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 656 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 543. Up to 89 conditions per place. [2023-08-29 19:45:01,360 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-29 19:45:01,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 217 flow [2023-08-29 19:45:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:45:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:45:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 404 transitions. [2023-08-29 19:45:01,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2023-08-29 19:45:01,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 404 transitions. [2023-08-29 19:45:01,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 404 transitions. [2023-08-29 19:45:01,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:01,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 404 transitions. [2023-08-29 19:45:01,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,365 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,365 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 55 flow. Second operand 6 states and 404 transitions. [2023-08-29 19:45:01,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 217 flow [2023-08-29 19:45:01,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:45:01,366 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 135 flow [2023-08-29 19:45:01,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-29 19:45:01,366 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-08-29 19:45:01,367 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 135 flow [2023-08-29 19:45:01,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:01,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:45:01,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:01,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash -407195477, now seen corresponding path program 2 times [2023-08-29 19:45:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:01,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11496746] [2023-08-29 19:45:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:01,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:01,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11496746] [2023-08-29 19:45:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11496746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:01,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:01,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511348389] [2023-08-29 19:45:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:01,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:01,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:01,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:01,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:01,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:01,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:01,485 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2023-08-29 19:45:01,486 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2023-08-29 19:45:01,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 199 events. 114/199 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 617 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 645. Up to 84 conditions per place. [2023-08-29 19:45:01,486 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-08-29 19:45:01,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 285 flow [2023-08-29 19:45:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:45:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:45:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-29 19:45:01,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2023-08-29 19:45:01,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-29 19:45:01,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-29 19:45:01,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:01,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-29 19:45:01,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,490 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,490 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 135 flow. Second operand 5 states and 338 transitions. [2023-08-29 19:45:01,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 285 flow [2023-08-29 19:45:01,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 283 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:01,494 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 183 flow [2023-08-29 19:45:01,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-29 19:45:01,494 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-29 19:45:01,494 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 183 flow [2023-08-29 19:45:01,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:01,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:45:01,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:01,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:01,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1802673473, now seen corresponding path program 1 times [2023-08-29 19:45:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:01,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996207962] [2023-08-29 19:45:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996207962] [2023-08-29 19:45:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996207962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:01,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:01,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990807422] [2023-08-29 19:45:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:01,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:01,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:01,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:01,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:01,661 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2023-08-29 19:45:01,662 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2023-08-29 19:45:01,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 239 events. 136/239 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 787 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 852. Up to 101 conditions per place. [2023-08-29 19:45:01,663 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2023-08-29 19:45:01,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 420 flow [2023-08-29 19:45:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:45:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:45:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 468 transitions. [2023-08-29 19:45:01,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-29 19:45:01,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 468 transitions. [2023-08-29 19:45:01,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 468 transitions. [2023-08-29 19:45:01,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:01,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 468 transitions. [2023-08-29 19:45:01,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,667 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,667 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 183 flow. Second operand 7 states and 468 transitions. [2023-08-29 19:45:01,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 420 flow [2023-08-29 19:45:01,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 380 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:01,670 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 270 flow [2023-08-29 19:45:01,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-29 19:45:01,670 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-29 19:45:01,670 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 270 flow [2023-08-29 19:45:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:01,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:01,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:45:01,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:01,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1802518163, now seen corresponding path program 2 times [2023-08-29 19:45:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:01,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987923821] [2023-08-29 19:45:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:01,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:01,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987923821] [2023-08-29 19:45:01,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987923821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:01,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:01,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:01,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892285818] [2023-08-29 19:45:01,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:01,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:01,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:01,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:01,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:01,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:01,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:01,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:01,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:01,853 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-08-29 19:45:01,853 INFO L131 PetriNetUnfolder]: For 778/778 co-relation queries the response was YES. [2023-08-29 19:45:01,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 303 events. 172/303 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1052 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1137. Up to 79 conditions per place. [2023-08-29 19:45:01,854 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2023-08-29 19:45:01,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 520 flow [2023-08-29 19:45:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:45:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:45:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 534 transitions. [2023-08-29 19:45:01,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-08-29 19:45:01,856 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 534 transitions. [2023-08-29 19:45:01,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 534 transitions. [2023-08-29 19:45:01,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:01,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 534 transitions. [2023-08-29 19:45:01,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,858 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 270 flow. Second operand 8 states and 534 transitions. [2023-08-29 19:45:01,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 520 flow [2023-08-29 19:45:01,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 496 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-29 19:45:01,862 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 376 flow [2023-08-29 19:45:01,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-29 19:45:01,862 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 28 predicate places. [2023-08-29 19:45:01,862 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 376 flow [2023-08-29 19:45:01,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:01,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:01,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:45:01,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:01,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -105307223, now seen corresponding path program 3 times [2023-08-29 19:45:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:01,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295053403] [2023-08-29 19:45:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:01,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:01,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:01,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295053403] [2023-08-29 19:45:01,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295053403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:01,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:01,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293994893] [2023-08-29 19:45:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:01,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:01,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:01,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:01,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:02,059 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2023-08-29 19:45:02,059 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2023-08-29 19:45:02,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 295 events. 168/295 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1031 event pairs, 18 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1310. Up to 71 conditions per place. [2023-08-29 19:45:02,061 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 28 selfloop transitions, 27 changer transitions 10/65 dead transitions. [2023-08-29 19:45:02,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 652 flow [2023-08-29 19:45:02,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:45:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:45:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 533 transitions. [2023-08-29 19:45:02,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626736111111111 [2023-08-29 19:45:02,062 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 533 transitions. [2023-08-29 19:45:02,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 533 transitions. [2023-08-29 19:45:02,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:02,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 533 transitions. [2023-08-29 19:45:02,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,065 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,066 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 376 flow. Second operand 8 states and 533 transitions. [2023-08-29 19:45:02,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 652 flow [2023-08-29 19:45:02,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 618 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-29 19:45:02,071 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 477 flow [2023-08-29 19:45:02,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-08-29 19:45:02,072 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-29 19:45:02,072 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 477 flow [2023-08-29 19:45:02,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:02,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:02,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:45:02,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:02,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash -66003947, now seen corresponding path program 4 times [2023-08-29 19:45:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:02,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933865192] [2023-08-29 19:45:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:02,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:02,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933865192] [2023-08-29 19:45:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933865192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411684076] [2023-08-29 19:45:02,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:45:02,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:02,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:02,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:02,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 19:45:02,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:45:02,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:02,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 19:45:02,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:02,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411684076] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:02,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-29 19:45:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428878155] [2023-08-29 19:45:02,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:45:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:45:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:45:02,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:02,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 477 flow. Second operand has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:02,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:02,563 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2023-08-29 19:45:02,564 INFO L131 PetriNetUnfolder]: For 2696/2696 co-relation queries the response was YES. [2023-08-29 19:45:02,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 343 events. 192/343 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1204 event pairs, 41 based on Foata normal form. 24/367 useless extension candidates. Maximal degree in co-relation 1673. Up to 181 conditions per place. [2023-08-29 19:45:02,578 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 45 selfloop transitions, 19 changer transitions 19/83 dead transitions. [2023-08-29 19:45:02,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 917 flow [2023-08-29 19:45:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 19:45:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 19:45:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 797 transitions. [2023-08-29 19:45:02,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122685185185186 [2023-08-29 19:45:02,580 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 797 transitions. [2023-08-29 19:45:02,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 797 transitions. [2023-08-29 19:45:02,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:02,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 797 transitions. [2023-08-29 19:45:02,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 66.41666666666667) internal successors, (797), 12 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,583 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,583 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 477 flow. Second operand 12 states and 797 transitions. [2023-08-29 19:45:02,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 917 flow [2023-08-29 19:45:02,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 862 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-29 19:45:02,589 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 587 flow [2023-08-29 19:45:02,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2023-08-29 19:45:02,590 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-08-29 19:45:02,590 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 587 flow [2023-08-29 19:45:02,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:02,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:02,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:02,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-29 19:45:02,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:02,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash -49023077, now seen corresponding path program 5 times [2023-08-29 19:45:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:02,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005033971] [2023-08-29 19:45:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:02,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:02,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:02,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005033971] [2023-08-29 19:45:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005033971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:02,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715961261] [2023-08-29 19:45:02,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:45:02,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:02,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:02,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:02,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 19:45:02,921 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:45:02,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:02,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 19:45:02,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:02,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:03,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715961261] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:03,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:03,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-29 19:45:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666729776] [2023-08-29 19:45:03,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:03,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 19:45:03,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 19:45:03,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-29 19:45:03,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:03,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 587 flow. Second operand has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:03,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:03,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:03,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:03,309 INFO L130 PetriNetUnfolder]: 254/459 cut-off events. [2023-08-29 19:45:03,310 INFO L131 PetriNetUnfolder]: For 6978/6978 co-relation queries the response was YES. [2023-08-29 19:45:03,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 459 events. 254/459 cut-off events. For 6978/6978 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1793 event pairs, 30 based on Foata normal form. 28/487 useless extension candidates. Maximal degree in co-relation 2588. Up to 131 conditions per place. [2023-08-29 19:45:03,312 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 46 selfloop transitions, 44 changer transitions 29/119 dead transitions. [2023-08-29 19:45:03,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1454 flow [2023-08-29 19:45:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-29 19:45:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-29 19:45:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1195 transitions. [2023-08-29 19:45:03,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46103395061728397 [2023-08-29 19:45:03,314 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1195 transitions. [2023-08-29 19:45:03,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1195 transitions. [2023-08-29 19:45:03,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:03,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1195 transitions. [2023-08-29 19:45:03,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.38888888888889) internal successors, (1195), 18 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:03,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:03,319 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:03,319 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 587 flow. Second operand 18 states and 1195 transitions. [2023-08-29 19:45:03,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1454 flow [2023-08-29 19:45:03,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 1311 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-08-29 19:45:03,331 INFO L231 Difference]: Finished difference. Result has 93 places, 66 transitions, 945 flow [2023-08-29 19:45:03,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=945, PETRI_PLACES=93, PETRI_TRANSITIONS=66} [2023-08-29 19:45:03,331 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 69 predicate places. [2023-08-29 19:45:03,331 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 66 transitions, 945 flow [2023-08-29 19:45:03,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:03,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:03,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:03,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 19:45:03,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-29 19:45:03,536 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:03,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1348112973, now seen corresponding path program 6 times [2023-08-29 19:45:03,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:03,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022856408] [2023-08-29 19:45:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:03,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022856408] [2023-08-29 19:45:03,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022856408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:03,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098967254] [2023-08-29 19:45:03,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:45:03,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:03,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:03,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:03,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 19:45:03,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-29 19:45:03,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:03,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:45:03,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:03,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098967254] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:03,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:03,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 19:45:03,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164771152] [2023-08-29 19:45:03,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:03,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 19:45:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:03,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 19:45:03,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-29 19:45:03,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:03,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 66 transitions, 945 flow. Second operand has 14 states, 14 states have (on average 62.714285714285715) internal successors, (878), 14 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:03,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:03,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:03,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:04,125 INFO L130 PetriNetUnfolder]: 338/619 cut-off events. [2023-08-29 19:45:04,126 INFO L131 PetriNetUnfolder]: For 15458/15458 co-relation queries the response was YES. [2023-08-29 19:45:04,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 619 events. 338/619 cut-off events. For 15458/15458 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2619 event pairs, 27 based on Foata normal form. 24/643 useless extension candidates. Maximal degree in co-relation 4489. Up to 207 conditions per place. [2023-08-29 19:45:04,132 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 56 selfloop transitions, 60 changer transitions 19/135 dead transitions. [2023-08-29 19:45:04,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 135 transitions, 2184 flow [2023-08-29 19:45:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-29 19:45:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-29 19:45:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1190 transitions. [2023-08-29 19:45:04,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591049382716049 [2023-08-29 19:45:04,134 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1190 transitions. [2023-08-29 19:45:04,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1190 transitions. [2023-08-29 19:45:04,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:04,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1190 transitions. [2023-08-29 19:45:04,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.11111111111111) internal successors, (1190), 18 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,139 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,139 INFO L175 Difference]: Start difference. First operand has 93 places, 66 transitions, 945 flow. Second operand 18 states and 1190 transitions. [2023-08-29 19:45:04,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 135 transitions, 2184 flow [2023-08-29 19:45:04,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 135 transitions, 1904 flow, removed 130 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:04,162 INFO L231 Difference]: Finished difference. Result has 114 places, 82 transitions, 1312 flow [2023-08-29 19:45:04,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1312, PETRI_PLACES=114, PETRI_TRANSITIONS=82} [2023-08-29 19:45:04,162 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2023-08-29 19:45:04,162 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 82 transitions, 1312 flow [2023-08-29 19:45:04,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 62.714285714285715) internal successors, (878), 14 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:04,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:04,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:04,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:04,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:04,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1879733603, now seen corresponding path program 7 times [2023-08-29 19:45:04,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:04,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811795498] [2023-08-29 19:45:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:04,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811795498] [2023-08-29 19:45:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811795498] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018243696] [2023-08-29 19:45:04,427 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:45:04,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:04,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:04,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:04,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 19:45:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:04,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:45:04,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:04,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:04,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018243696] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:04,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:04,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-29 19:45:04,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726046696] [2023-08-29 19:45:04,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:04,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 19:45:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 19:45:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-29 19:45:04,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:04,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 82 transitions, 1312 flow. Second operand has 15 states, 15 states have (on average 62.733333333333334) internal successors, (941), 15 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:04,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:04,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:04,938 INFO L130 PetriNetUnfolder]: 390/711 cut-off events. [2023-08-29 19:45:04,938 INFO L131 PetriNetUnfolder]: For 27719/27719 co-relation queries the response was YES. [2023-08-29 19:45:04,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 711 events. 390/711 cut-off events. For 27719/27719 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3084 event pairs, 12 based on Foata normal form. 24/735 useless extension candidates. Maximal degree in co-relation 5857. Up to 238 conditions per place. [2023-08-29 19:45:04,952 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 45 selfloop transitions, 84 changer transitions 36/165 dead transitions. [2023-08-29 19:45:04,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 165 transitions, 2974 flow [2023-08-29 19:45:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-29 19:45:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-29 19:45:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1392 transitions. [2023-08-29 19:45:04,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-08-29 19:45:04,956 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1392 transitions. [2023-08-29 19:45:04,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1392 transitions. [2023-08-29 19:45:04,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:04,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1392 transitions. [2023-08-29 19:45:04,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.28571428571429) internal successors, (1392), 21 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 144.0) internal successors, (3168), 22 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,962 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 144.0) internal successors, (3168), 22 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,962 INFO L175 Difference]: Start difference. First operand has 114 places, 82 transitions, 1312 flow. Second operand 21 states and 1392 transitions. [2023-08-29 19:45:04,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 165 transitions, 2974 flow [2023-08-29 19:45:04,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 165 transitions, 2402 flow, removed 246 selfloop flow, removed 12 redundant places. [2023-08-29 19:45:04,989 INFO L231 Difference]: Finished difference. Result has 132 places, 101 transitions, 1713 flow [2023-08-29 19:45:04,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1713, PETRI_PLACES=132, PETRI_TRANSITIONS=101} [2023-08-29 19:45:04,990 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 108 predicate places. [2023-08-29 19:45:04,990 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 101 transitions, 1713 flow [2023-08-29 19:45:04,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 62.733333333333334) internal successors, (941), 15 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:04,990 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:04,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:05,197 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:05,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash 556885969, now seen corresponding path program 8 times [2023-08-29 19:45:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86684267] [2023-08-29 19:45:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:05,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:05,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86684267] [2023-08-29 19:45:05,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86684267] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:05,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239985091] [2023-08-29 19:45:05,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:45:05,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:05,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:05,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:05,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 19:45:05,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:45:05,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:05,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-29 19:45:05,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:05,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:05,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239985091] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:05,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:05,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-29 19:45:05,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591019935] [2023-08-29 19:45:05,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-29 19:45:05,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-29 19:45:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-29 19:45:05,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:05,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 101 transitions, 1713 flow. Second operand has 22 states, 22 states have (on average 62.5) internal successors, (1375), 22 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:05,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:05,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:05,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:06,229 INFO L130 PetriNetUnfolder]: 538/959 cut-off events. [2023-08-29 19:45:06,229 INFO L131 PetriNetUnfolder]: For 43225/43225 co-relation queries the response was YES. [2023-08-29 19:45:06,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8739 conditions, 959 events. 538/959 cut-off events. For 43225/43225 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4101 event pairs, 15 based on Foata normal form. 36/995 useless extension candidates. Maximal degree in co-relation 8685. Up to 330 conditions per place. [2023-08-29 19:45:06,237 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-08-29 19:45:06,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 247 transitions, 4925 flow [2023-08-29 19:45:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-29 19:45:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-29 19:45:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2378 transitions. [2023-08-29 19:45:06,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45871913580246915 [2023-08-29 19:45:06,242 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2378 transitions. [2023-08-29 19:45:06,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2378 transitions. [2023-08-29 19:45:06,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:06,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2378 transitions. [2023-08-29 19:45:06,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 66.05555555555556) internal successors, (2378), 36 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:06,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 144.0) internal successors, (5328), 37 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:06,251 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 144.0) internal successors, (5328), 37 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:06,251 INFO L175 Difference]: Start difference. First operand has 132 places, 101 transitions, 1713 flow. Second operand 36 states and 2378 transitions. [2023-08-29 19:45:06,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 247 transitions, 4925 flow [2023-08-29 19:45:06,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 247 transitions, 4318 flow, removed 265 selfloop flow, removed 14 redundant places. [2023-08-29 19:45:06,294 INFO L231 Difference]: Finished difference. Result has 171 places, 138 transitions, 2758 flow [2023-08-29 19:45:06,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2758, PETRI_PLACES=171, PETRI_TRANSITIONS=138} [2023-08-29 19:45:06,294 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2023-08-29 19:45:06,294 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 138 transitions, 2758 flow [2023-08-29 19:45:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 62.5) internal successors, (1375), 22 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:06,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:06,295 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:06,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 19:45:06,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 19:45:06,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:06,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1563143313, now seen corresponding path program 9 times [2023-08-29 19:45:06,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:06,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011909351] [2023-08-29 19:45:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:06,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011909351] [2023-08-29 19:45:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011909351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138580132] [2023-08-29 19:45:06,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:45:06,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:06,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:06,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:06,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 19:45:06,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-29 19:45:06,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:06,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 19:45:06,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:06,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:07,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138580132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:07,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:07,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-29 19:45:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763344617] [2023-08-29 19:45:07,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:07,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-29 19:45:07,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-29 19:45:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-08-29 19:45:07,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:07,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 138 transitions, 2758 flow. Second operand has 34 states, 34 states have (on average 62.3235294117647) internal successors, (2119), 34 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:07,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:07,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:07,746 INFO L130 PetriNetUnfolder]: 674/1231 cut-off events. [2023-08-29 19:45:07,746 INFO L131 PetriNetUnfolder]: For 90395/90395 co-relation queries the response was YES. [2023-08-29 19:45:07,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13998 conditions, 1231 events. 674/1231 cut-off events. For 90395/90395 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5570 event pairs, 99 based on Foata normal form. 24/1255 useless extension candidates. Maximal degree in co-relation 13930. Up to 466 conditions per place. [2023-08-29 19:45:07,757 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 113 selfloop transitions, 100 changer transitions 71/284 dead transitions. [2023-08-29 19:45:07,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 284 transitions, 6989 flow [2023-08-29 19:45:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-29 19:45:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-29 19:45:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2489 transitions. [2023-08-29 19:45:07,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2023-08-29 19:45:07,760 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2489 transitions. [2023-08-29 19:45:07,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2489 transitions. [2023-08-29 19:45:07,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:07,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2489 transitions. [2023-08-29 19:45:07,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 65.5) internal successors, (2489), 38 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,769 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,769 INFO L175 Difference]: Start difference. First operand has 171 places, 138 transitions, 2758 flow. Second operand 38 states and 2489 transitions. [2023-08-29 19:45:07,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 284 transitions, 6989 flow [2023-08-29 19:45:07,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 284 transitions, 5398 flow, removed 763 selfloop flow, removed 13 redundant places. [2023-08-29 19:45:07,929 INFO L231 Difference]: Finished difference. Result has 203 places, 172 transitions, 3028 flow [2023-08-29 19:45:07,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3028, PETRI_PLACES=203, PETRI_TRANSITIONS=172} [2023-08-29 19:45:07,929 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 179 predicate places. [2023-08-29 19:45:07,929 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 172 transitions, 3028 flow [2023-08-29 19:45:07,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 62.3235294117647) internal successors, (2119), 34 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:07,930 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:07,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-29 19:45:08,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 19:45:08,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:08,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1097783361, now seen corresponding path program 10 times [2023-08-29 19:45:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244635635] [2023-08-29 19:45:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244635635] [2023-08-29 19:45:08,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244635635] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463506113] [2023-08-29 19:45:08,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:45:08,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:08,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:08,321 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:08,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 19:45:08,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:45:08,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:08,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 19:45:08,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:08,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463506113] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:08,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:08,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-29 19:45:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716507654] [2023-08-29 19:45:08,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:08,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-29 19:45:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-29 19:45:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2023-08-29 19:45:08,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:08,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 172 transitions, 3028 flow. Second operand has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:08,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:08,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:08,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:09,759 INFO L130 PetriNetUnfolder]: 858/1595 cut-off events. [2023-08-29 19:45:09,759 INFO L131 PetriNetUnfolder]: For 148238/148238 co-relation queries the response was YES. [2023-08-29 19:45:09,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17910 conditions, 1595 events. 858/1595 cut-off events. For 148238/148238 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7838 event pairs, 42 based on Foata normal form. 32/1627 useless extension candidates. Maximal degree in co-relation 17838. Up to 646 conditions per place. [2023-08-29 19:45:09,774 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 88 selfloop transitions, 180 changer transitions 83/351 dead transitions. [2023-08-29 19:45:09,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 351 transitions, 7743 flow [2023-08-29 19:45:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-29 19:45:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-29 19:45:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2890 transitions. [2023-08-29 19:45:09,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45612373737373735 [2023-08-29 19:45:09,778 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2890 transitions. [2023-08-29 19:45:09,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2890 transitions. [2023-08-29 19:45:09,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:09,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2890 transitions. [2023-08-29 19:45:09,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 65.68181818181819) internal successors, (2890), 44 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:09,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:09,787 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:09,787 INFO L175 Difference]: Start difference. First operand has 203 places, 172 transitions, 3028 flow. Second operand 44 states and 2890 transitions. [2023-08-29 19:45:09,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 351 transitions, 7743 flow [2023-08-29 19:45:09,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 351 transitions, 7094 flow, removed 257 selfloop flow, removed 17 redundant places. [2023-08-29 19:45:09,971 INFO L231 Difference]: Finished difference. Result has 240 places, 221 transitions, 4323 flow [2023-08-29 19:45:09,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4323, PETRI_PLACES=240, PETRI_TRANSITIONS=221} [2023-08-29 19:45:09,971 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2023-08-29 19:45:09,971 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 221 transitions, 4323 flow [2023-08-29 19:45:09,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:09,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:09,972 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:09,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-29 19:45:10,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:10,176 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:10,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1091144601, now seen corresponding path program 11 times [2023-08-29 19:45:10,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:10,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125402378] [2023-08-29 19:45:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:10,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:10,363 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:10,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:10,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125402378] [2023-08-29 19:45:10,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125402378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:10,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382019268] [2023-08-29 19:45:10,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:45:10,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:10,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:10,364 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:10,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 19:45:10,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-29 19:45:10,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:10,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 19:45:10,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:10,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382019268] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:10,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:10,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-29 19:45:10,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141584222] [2023-08-29 19:45:10,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:10,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-29 19:45:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:10,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-29 19:45:10,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2023-08-29 19:45:10,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:10,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 221 transitions, 4323 flow. Second operand has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:10,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:10,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:10,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:11,865 INFO L130 PetriNetUnfolder]: 1002/1859 cut-off events. [2023-08-29 19:45:11,865 INFO L131 PetriNetUnfolder]: For 242261/242261 co-relation queries the response was YES. [2023-08-29 19:45:11,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23308 conditions, 1859 events. 1002/1859 cut-off events. For 242261/242261 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9414 event pairs, 16 based on Foata normal form. 36/1895 useless extension candidates. Maximal degree in co-relation 23224. Up to 766 conditions per place. [2023-08-29 19:45:11,884 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 75 selfloop transitions, 233 changer transitions 81/389 dead transitions. [2023-08-29 19:45:11,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 389 transitions, 9369 flow [2023-08-29 19:45:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-29 19:45:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-29 19:45:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2897 transitions. [2023-08-29 19:45:11,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45722853535353536 [2023-08-29 19:45:11,888 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2897 transitions. [2023-08-29 19:45:11,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2897 transitions. [2023-08-29 19:45:11,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:11,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2897 transitions. [2023-08-29 19:45:11,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 65.8409090909091) internal successors, (2897), 44 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:11,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:11,902 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:11,902 INFO L175 Difference]: Start difference. First operand has 240 places, 221 transitions, 4323 flow. Second operand 44 states and 2897 transitions. [2023-08-29 19:45:11,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 389 transitions, 9369 flow [2023-08-29 19:45:12,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 389 transitions, 8453 flow, removed 368 selfloop flow, removed 18 redundant places. [2023-08-29 19:45:12,237 INFO L231 Difference]: Finished difference. Result has 279 places, 259 transitions, 5379 flow [2023-08-29 19:45:12,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5379, PETRI_PLACES=279, PETRI_TRANSITIONS=259} [2023-08-29 19:45:12,237 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 255 predicate places. [2023-08-29 19:45:12,237 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 259 transitions, 5379 flow [2023-08-29 19:45:12,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:12,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:12,238 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:12,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-29 19:45:12,446 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:12,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -860983159, now seen corresponding path program 12 times [2023-08-29 19:45:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:12,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327739718] [2023-08-29 19:45:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:12,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327739718] [2023-08-29 19:45:12,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327739718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752675068] [2023-08-29 19:45:12,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:45:12,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:12,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:12,633 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:12,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 19:45:12,699 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-08-29 19:45:12,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:12,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-29 19:45:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:12,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:12,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752675068] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:12,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:12,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-08-29 19:45:12,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468337925] [2023-08-29 19:45:12,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:12,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-29 19:45:12,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-29 19:45:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-29 19:45:12,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:12,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 259 transitions, 5379 flow. Second operand has 38 states, 38 states have (on average 62.28947368421053) internal successors, (2367), 38 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:12,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:12,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:12,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:14,075 INFO L130 PetriNetUnfolder]: 1050/1943 cut-off events. [2023-08-29 19:45:14,076 INFO L131 PetriNetUnfolder]: For 338236/338236 co-relation queries the response was YES. [2023-08-29 19:45:14,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27280 conditions, 1943 events. 1050/1943 cut-off events. For 338236/338236 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9854 event pairs, 12 based on Foata normal form. 20/1963 useless extension candidates. Maximal degree in co-relation 27181. Up to 790 conditions per place. [2023-08-29 19:45:14,098 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 70 selfloop transitions, 249 changer transitions 78/397 dead transitions. [2023-08-29 19:45:14,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 397 transitions, 10364 flow [2023-08-29 19:45:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-29 19:45:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-29 19:45:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2766 transitions. [2023-08-29 19:45:14,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573412698412698 [2023-08-29 19:45:14,101 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2766 transitions. [2023-08-29 19:45:14,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2766 transitions. [2023-08-29 19:45:14,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:14,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2766 transitions. [2023-08-29 19:45:14,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 65.85714285714286) internal successors, (2766), 42 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:14,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 144.0) internal successors, (6192), 43 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:14,108 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 144.0) internal successors, (6192), 43 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:14,108 INFO L175 Difference]: Start difference. First operand has 279 places, 259 transitions, 5379 flow. Second operand 42 states and 2766 transitions. [2023-08-29 19:45:14,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 397 transitions, 10364 flow [2023-08-29 19:45:14,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 397 transitions, 9124 flow, removed 506 selfloop flow, removed 22 redundant places. [2023-08-29 19:45:14,701 INFO L231 Difference]: Finished difference. Result has 306 places, 271 transitions, 5577 flow [2023-08-29 19:45:14,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5577, PETRI_PLACES=306, PETRI_TRANSITIONS=271} [2023-08-29 19:45:14,701 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 282 predicate places. [2023-08-29 19:45:14,702 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 271 transitions, 5577 flow [2023-08-29 19:45:14,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 62.28947368421053) internal successors, (2367), 38 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:14,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:14,702 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:14,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-29 19:45:14,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:14,908 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:14,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash -125608721, now seen corresponding path program 13 times [2023-08-29 19:45:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:14,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850462323] [2023-08-29 19:45:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:15,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:15,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850462323] [2023-08-29 19:45:15,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850462323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226543027] [2023-08-29 19:45:15,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:45:15,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:15,129 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:15,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 19:45:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:15,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 19:45:15,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:15,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:15,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226543027] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:15,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:15,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 27 [2023-08-29 19:45:15,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87344608] [2023-08-29 19:45:15,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:15,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-29 19:45:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:15,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-29 19:45:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2023-08-29 19:45:15,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:15,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 271 transitions, 5577 flow. Second operand has 29 states, 29 states have (on average 62.41379310344828) internal successors, (1810), 29 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:15,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:15,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:15,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:16,656 INFO L130 PetriNetUnfolder]: 1150/2119 cut-off events. [2023-08-29 19:45:16,656 INFO L131 PetriNetUnfolder]: For 422487/422487 co-relation queries the response was YES. [2023-08-29 19:45:16,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31341 conditions, 2119 events. 1150/2119 cut-off events. For 422487/422487 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 10718 event pairs, 15 based on Foata normal form. 20/2139 useless extension candidates. Maximal degree in co-relation 31235. Up to 850 conditions per place. [2023-08-29 19:45:16,675 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 80 selfloop transitions, 274 changer transitions 90/444 dead transitions. [2023-08-29 19:45:16,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 444 transitions, 12140 flow [2023-08-29 19:45:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-29 19:45:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-29 19:45:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3160 transitions. [2023-08-29 19:45:16,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45717592592592593 [2023-08-29 19:45:16,679 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3160 transitions. [2023-08-29 19:45:16,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3160 transitions. [2023-08-29 19:45:16,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:16,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3160 transitions. [2023-08-29 19:45:16,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 65.83333333333333) internal successors, (3160), 48 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:16,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:16,687 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:16,687 INFO L175 Difference]: Start difference. First operand has 306 places, 271 transitions, 5577 flow. Second operand 48 states and 3160 transitions. [2023-08-29 19:45:16,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 444 transitions, 12140 flow [2023-08-29 19:45:17,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 444 transitions, 10425 flow, removed 651 selfloop flow, removed 34 redundant places. [2023-08-29 19:45:17,294 INFO L231 Difference]: Finished difference. Result has 329 places, 296 transitions, 6309 flow [2023-08-29 19:45:17,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6309, PETRI_PLACES=329, PETRI_TRANSITIONS=296} [2023-08-29 19:45:17,294 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 305 predicate places. [2023-08-29 19:45:17,294 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 296 transitions, 6309 flow [2023-08-29 19:45:17,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 62.41379310344828) internal successors, (1810), 29 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:17,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:17,295 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:17,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:17,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:17,495 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:17,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:17,496 INFO L85 PathProgramCache]: Analyzing trace with hash -782550557, now seen corresponding path program 14 times [2023-08-29 19:45:17,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:17,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562718171] [2023-08-29 19:45:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:17,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:45:17,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 19:45:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:45:17,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 19:45:17,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 19:45:17,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-29 19:45:17,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 19:45:17,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 19:45:17,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 19:45:17,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-29 19:45:17,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 19:45:17,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 19:45:17,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 19:45:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 19:45:17,554 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1] [2023-08-29 19:45:17,557 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:45:17,557 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:45:17,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:45:17 BasicIcfg [2023-08-29 19:45:17,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:45:17,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:45:17,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:45:17,598 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:45:17,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:58" (3/4) ... [2023-08-29 19:45:17,601 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 19:45:17,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:45:17,602 INFO L158 Benchmark]: Toolchain (without parser) took 20008.12ms. Allocated memory was 83.9MB in the beginning and 593.5MB in the end (delta: 509.6MB). Free memory was 60.7MB in the beginning and 243.2MB in the end (delta: -182.4MB). Peak memory consumption was 326.0MB. Max. memory is 16.1GB. [2023-08-29 19:45:17,602 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:45:17,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.81ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 61.3MB in the end (delta: -818.5kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-29 19:45:17,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.80ms. Allocated memory is still 83.9MB. Free memory was 61.3MB in the beginning and 59.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:45:17,602 INFO L158 Benchmark]: Boogie Preprocessor took 14.50ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 58.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:45:17,603 INFO L158 Benchmark]: RCFGBuilder took 276.19ms. Allocated memory is still 83.9MB. Free memory was 58.0MB in the beginning and 44.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 19:45:17,603 INFO L158 Benchmark]: TraceAbstraction took 19418.20ms. Allocated memory was 83.9MB in the beginning and 593.5MB in the end (delta: 509.6MB). Free memory was 44.1MB in the beginning and 244.2MB in the end (delta: -200.0MB). Peak memory consumption was 310.6MB. Max. memory is 16.1GB. [2023-08-29 19:45:17,603 INFO L158 Benchmark]: Witness Printer took 3.56ms. Allocated memory is still 593.5MB. Free memory is still 243.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:45:17,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.81ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 61.3MB in the end (delta: -818.5kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.80ms. Allocated memory is still 83.9MB. Free memory was 61.3MB in the beginning and 59.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.50ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 58.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.19ms. Allocated memory is still 83.9MB. Free memory was 58.0MB in the beginning and 44.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19418.20ms. Allocated memory was 83.9MB in the beginning and 593.5MB in the end (delta: 509.6MB). Free memory was 44.1MB in the beginning and 244.2MB in the end (delta: -200.0MB). Peak memory consumption was 310.6MB. Max. memory is 16.1GB. * Witness Printer took 3.56ms. Allocated memory is still 593.5MB. Free memory is still 243.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 74 PlacesBefore, 24 PlacesAfterwards, 72 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 1104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 978, independent: 952, independent conditional: 0, independent unconditional: 952, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 644, independent: 633, independent conditional: 0, independent unconditional: 633, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 978, independent: 319, independent conditional: 0, independent unconditional: 319, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 644, unknown conditional: 0, unknown unconditional: 644] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=25, id1={3:0}, id2={5:0}, j=26, k=10, k=10] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 92 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.3s, OverallIterations: 21, TraceHistogramMax: 10, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4763 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4582 mSDsluCounter, 818 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 763 mSDsCounter, 487 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4729 IncrementalHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 487 mSolverCounterUnsat, 55 mSDtfsCounter, 4729 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 213 SyntacticMatches, 14 SemanticMatches, 543 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8880 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6309occurred in iteration=20, InterpolantAutomatonStates: 371, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 450 NumberOfCodeBlocks, 450 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 560 ConstructedInterpolants, 0 QuantifiedInterpolants, 2452 SizeOfPredicates, 98 NumberOfNonLiveVariables, 1640 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 0/816 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 19:45:17,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/pthread/triangular-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:45:19,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:45:19,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:45:19,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:45:19,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:45:19,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:45:19,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:45:19,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:45:19,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:45:19,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:45:19,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:45:19,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:45:19,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:45:19,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:45:19,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:45:19,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:45:19,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:45:19,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:45:19,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:45:19,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:45:19,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:45:19,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:45:19,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:45:19,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:45:19,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:45:19,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:45:19,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:45:19,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:45:19,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:45:19,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:45:19,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:45:19,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:45:19,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:45:19,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:45:19,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:45:19,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:45:19,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:45:19,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:45:19,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:45:19,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:45:19,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:45:19,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 19:45:19,220 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:45:19,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:45:19,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:45:19,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:45:19,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:45:19,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:45:19,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:45:19,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:45:19,223 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:45:19,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:45:19,224 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:45:19,224 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:45:19,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:45:19,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:45:19,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:45:19,224 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:45:19,224 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:45:19,225 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:45:19,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:45:19,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:45:19,225 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 19:45:19,225 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 19:45:19,225 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:45:19,225 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:45:19,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:45:19,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:45:19,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:45:19,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:45:19,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:45:19,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:45:19,227 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 19:45:19,227 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 19:45:19,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:45:19,227 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:45:19,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:45:19,227 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 19:45:19,227 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:45:19,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:45:19,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:45:19,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:45:19,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:45:19,478 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:45:19,479 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:45:19,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-29 19:45:20,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:45:20,620 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:45:20,631 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-29 19:45:20,639 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad699c77/57c499d8f2944f39aa1c531a367cefef/FLAG2eb767a5d [2023-08-29 19:45:20,648 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad699c77/57c499d8f2944f39aa1c531a367cefef [2023-08-29 19:45:20,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:45:20,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:45:20,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:45:20,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:45:20,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:45:20,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:20,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20, skipping insertion in model container [2023-08-29 19:45:20,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:20,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:45:20,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:45:20,865 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-29 19:45:20,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:45:20,881 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:45:20,922 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-29 19:45:20,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:45:20,946 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:45:20,946 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:45:20,950 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:45:20,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20 WrapperNode [2023-08-29 19:45:20,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:45:20,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:45:20,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:45:20,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:45:20,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:20,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:20,996 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-08-29 19:45:20,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:45:20,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:45:20,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:45:20,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:45:21,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:45:21,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:45:21,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:45:21,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:45:21,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (1/1) ... [2023-08-29 19:45:21,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:45:21,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:21,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:45:21,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:45:21,094 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-29 19:45:21,094 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-29 19:45:21,095 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 19:45:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:45:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:45:21,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:45:21,097 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:45:21,231 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:45:21,233 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:45:21,378 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:45:21,382 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:45:21,384 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 19:45:21,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:45:21 BoogieIcfgContainer [2023-08-29 19:45:21,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:45:21,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:45:21,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:45:21,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:45:21,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:45:20" (1/3) ... [2023-08-29 19:45:21,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa17f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:45:21, skipping insertion in model container [2023-08-29 19:45:21,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:20" (2/3) ... [2023-08-29 19:45:21,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa17f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:45:21, skipping insertion in model container [2023-08-29 19:45:21,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:45:21" (3/3) ... [2023-08-29 19:45:21,391 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-08-29 19:45:21,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:45:21,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 19:45:21,401 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:45:21,438 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 19:45:21,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 160 flow [2023-08-29 19:45:21,489 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-29 19:45:21,489 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:21,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:45:21,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 160 flow [2023-08-29 19:45:21,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 152 flow [2023-08-29 19:45:21,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:45:21,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-29 19:45:21,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-29 19:45:21,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 152 flow [2023-08-29 19:45:21,536 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-29 19:45:21,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:21,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:45:21,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-29 19:45:24,647 INFO L134 LiptonReduction]: Checked pairs total: 1134 [2023-08-29 19:45:24,648 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-29 19:45:24,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:45:24,660 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;@5e150590, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:45:24,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 19:45:24,661 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:45:24,661 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:24,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:24,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:45:24,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:24,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash 295, now seen corresponding path program 1 times [2023-08-29 19:45:24,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:24,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028961265] [2023-08-29 19:45:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:24,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:24,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:24,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 19:45:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:24,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 19:45:24,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:24,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:24,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028961265] [2023-08-29 19:45:24,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028961265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:24,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:24,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:45:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304843685] [2023-08-29 19:45:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:45:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:24,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:45:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:45:24,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2023-08-29 19:45:24,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:24,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:24,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2023-08-29 19:45:24,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:24,868 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-29 19:45:24,868 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:45:24,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 464 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-29 19:45:24,870 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-29 19:45:24,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-29 19:45:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:45:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:45:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2023-08-29 19:45:24,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2023-08-29 19:45:24,879 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2023-08-29 19:45:24,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2023-08-29 19:45:24,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:24,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2023-08-29 19:45:24,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:24,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:24,901 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:24,902 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 158 transitions. [2023-08-29 19:45:24,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-29 19:45:24,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:24,905 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-29 19:45:24,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-29 19:45:24,908 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:45:24,908 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-29 19:45:24,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:24,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:24,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:45:24,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:25,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:25,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash 288861, now seen corresponding path program 1 times [2023-08-29 19:45:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:25,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002251392] [2023-08-29 19:45:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:25,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:25,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 19:45:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:25,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 19:45:25,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:25,209 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-29 19:45:25,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2023-08-29 19:45:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:25,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:25,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:25,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002251392] [2023-08-29 19:45:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002251392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:25,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:25,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:45:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876924608] [2023-08-29 19:45:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:25,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:45:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:45:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:45:25,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:25,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:25,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:25,336 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-29 19:45:25,337 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:25,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 349 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-08-29 19:45:25,338 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-29 19:45:25,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-29 19:45:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:45:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:45:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-29 19:45:25,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-29 19:45:25,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-29 19:45:25,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-29 19:45:25,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:25,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-29 19:45:25,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,349 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 208 transitions. [2023-08-29 19:45:25,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-29 19:45:25,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:25,350 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-29 19:45:25,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-29 19:45:25,351 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:45:25,351 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-29 19:45:25,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:25,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:45:25,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:25,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:25,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:25,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:25,558 INFO L85 PathProgramCache]: Analyzing trace with hash 288862, now seen corresponding path program 1 times [2023-08-29 19:45:25,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:25,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154668682] [2023-08-29 19:45:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:25,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:25,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:25,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 19:45:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:25,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 19:45:25,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:25,620 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 19:45:25,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-29 19:45:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:25,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:25,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:25,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154668682] [2023-08-29 19:45:25,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154668682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:25,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:25,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:45:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928482451] [2023-08-29 19:45:25,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:25,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:45:25,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:45:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:45:25,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 144 [2023-08-29 19:45:25,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:25,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 144 [2023-08-29 19:45:25,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:25,724 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-29 19:45:25,725 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 19:45:25,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 326 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-08-29 19:45:25,727 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-29 19:45:25,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-29 19:45:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:45:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:45:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-29 19:45:25,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 19:45:25,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-29 19:45:25,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-29 19:45:25,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:25,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-29 19:45:25,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,732 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 216 transitions. [2023-08-29 19:45:25,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-29 19:45:25,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:25,733 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-29 19:45:25,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 19:45:25,734 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-29 19:45:25,734 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-29 19:45:25,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:25,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:25,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 19:45:25,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:25,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:25,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:25,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash 15687470, now seen corresponding path program 1 times [2023-08-29 19:45:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897055547] [2023-08-29 19:45:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:25,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:25,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:25,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:25,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 19:45:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:25,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:45:25,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:26,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:26,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897055547] [2023-08-29 19:45:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897055547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:26,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:45:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518281177] [2023-08-29 19:45:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:45:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:45:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:45:26,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 144 [2023-08-29 19:45:26,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:26,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 144 [2023-08-29 19:45:26,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:26,138 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2023-08-29 19:45:26,138 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 19:45:26,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 878 event pairs, 14 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2023-08-29 19:45:26,140 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-29 19:45:26,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2023-08-29 19:45:26,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:45:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:45:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2023-08-29 19:45:26,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-08-29 19:45:26,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 355 transitions. [2023-08-29 19:45:26,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 355 transitions. [2023-08-29 19:45:26,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:26,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 355 transitions. [2023-08-29 19:45:26,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,152 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 355 transitions. [2023-08-29 19:45:26,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2023-08-29 19:45:26,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:26,154 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2023-08-29 19:45:26,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-08-29 19:45:26,155 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-29 19:45:26,155 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2023-08-29 19:45:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:26,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:26,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:26,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:26,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:26,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash 486312123, now seen corresponding path program 1 times [2023-08-29 19:45:26,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:26,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110008574] [2023-08-29 19:45:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:26,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:26,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:26,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:26,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 19:45:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:26,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 19:45:26,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:26,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:26,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110008574] [2023-08-29 19:45:26,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110008574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:26,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:26,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:45:26,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474051847] [2023-08-29 19:45:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:45:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:45:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:45:28,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 19:45:28,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 144 [2023-08-29 19:45:28,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:28,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:28,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 144 [2023-08-29 19:45:28,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:28,742 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2023-08-29 19:45:28,742 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-29 19:45:28,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 629 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2023-08-29 19:45:28,744 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2023-08-29 19:45:28,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2023-08-29 19:45:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:45:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:45:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-08-29 19:45:28,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2023-08-29 19:45:28,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-08-29 19:45:28,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-08-29 19:45:28,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:28,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-08-29 19:45:28,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:28,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:28,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:28,747 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 248 transitions. [2023-08-29 19:45:28,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2023-08-29 19:45:28,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:28,748 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2023-08-29 19:45:28,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-29 19:45:28,749 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-08-29 19:45:28,749 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2023-08-29 19:45:28,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:28,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:28,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:28,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:28,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:28,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:28,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:28,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2080325179, now seen corresponding path program 1 times [2023-08-29 19:45:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:28,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294572919] [2023-08-29 19:45:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:28,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:28,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:28,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:28,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 19:45:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:29,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:45:29,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:29,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:29,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294572919] [2023-08-29 19:45:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294572919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:29,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:29,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:29,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15234088] [2023-08-29 19:45:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:29,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:29,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:29,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:29,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:29,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:29,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:29,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:29,160 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2023-08-29 19:45:29,160 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-29 19:45:29,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2023-08-29 19:45:29,161 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2023-08-29 19:45:29,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2023-08-29 19:45:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:45:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:45:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2023-08-29 19:45:29,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-08-29 19:45:29,164 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 342 transitions. [2023-08-29 19:45:29,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 342 transitions. [2023-08-29 19:45:29,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:29,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 342 transitions. [2023-08-29 19:45:29,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,167 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,167 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 342 transitions. [2023-08-29 19:45:29,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2023-08-29 19:45:29,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:45:29,168 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2023-08-29 19:45:29,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-29 19:45:29,170 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-29 19:45:29,170 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2023-08-29 19:45:29,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:29,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:29,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:29,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:29,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:29,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2104567520, now seen corresponding path program 1 times [2023-08-29 19:45:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:29,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70627449] [2023-08-29 19:45:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:29,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:29,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:29,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:29,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 19:45:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:45:29,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:29,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:29,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:29,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70627449] [2023-08-29 19:45:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70627449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:29,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:29,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:29,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220143168] [2023-08-29 19:45:29,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:29,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:29,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:29,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:29,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:29,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:29,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:29,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:29,543 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2023-08-29 19:45:29,543 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-29 19:45:29,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 716 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2023-08-29 19:45:29,545 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-29 19:45:29,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2023-08-29 19:45:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:45:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:45:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2023-08-29 19:45:29,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2023-08-29 19:45:29,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 410 transitions. [2023-08-29 19:45:29,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 410 transitions. [2023-08-29 19:45:29,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:29,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 410 transitions. [2023-08-29 19:45:29,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,548 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 410 transitions. [2023-08-29 19:45:29,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2023-08-29 19:45:29,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 19:45:29,550 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2023-08-29 19:45:29,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-29 19:45:29,550 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-08-29 19:45:29,551 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2023-08-29 19:45:29,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:29,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:29,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:29,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:29,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:29,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2104543340, now seen corresponding path program 2 times [2023-08-29 19:45:29,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:29,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718554976] [2023-08-29 19:45:29,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:45:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:29,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:29,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 19:45:29,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 19:45:29,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:29,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:45:29,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:29,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:29,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:29,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718554976] [2023-08-29 19:45:29,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718554976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:29,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:29,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895757865] [2023-08-29 19:45:29,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:29,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:29,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:29,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:29,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:29,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:29,943 INFO L130 PetriNetUnfolder]: 124/219 cut-off events. [2023-08-29 19:45:29,943 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2023-08-29 19:45:29,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 705 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2023-08-29 19:45:29,944 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2023-08-29 19:45:29,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2023-08-29 19:45:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:45:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:45:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2023-08-29 19:45:29,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47337962962962965 [2023-08-29 19:45:29,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2023-08-29 19:45:29,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2023-08-29 19:45:29,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:29,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2023-08-29 19:45:29,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,948 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 409 transitions. [2023-08-29 19:45:29,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2023-08-29 19:45:29,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:29,950 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2023-08-29 19:45:29,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-29 19:45:29,951 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2023-08-29 19:45:29,951 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2023-08-29 19:45:29,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:29,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:29,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:29,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:30,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:30,160 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:30,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2065235665, now seen corresponding path program 1 times [2023-08-29 19:45:30,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:30,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898270134] [2023-08-29 19:45:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:30,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:30,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:30,162 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:30,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-29 19:45:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:30,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 19:45:30,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:30,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:30,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898270134] [2023-08-29 19:45:30,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898270134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:30,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:30,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:30,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60939307] [2023-08-29 19:45:30,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:30,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:30,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:30,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:30,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:30,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:30,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:30,389 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-08-29 19:45:30,389 INFO L131 PetriNetUnfolder]: For 1057/1057 co-relation queries the response was YES. [2023-08-29 19:45:30,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1066 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2023-08-29 19:45:30,390 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2023-08-29 19:45:30,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2023-08-29 19:45:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 19:45:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 19:45:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 610 transitions. [2023-08-29 19:45:30,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470679012345679 [2023-08-29 19:45:30,392 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 610 transitions. [2023-08-29 19:45:30,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 610 transitions. [2023-08-29 19:45:30,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:30,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 610 transitions. [2023-08-29 19:45:30,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.77777777777777) internal successors, (610), 9 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,395 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,395 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 610 transitions. [2023-08-29 19:45:30,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2023-08-29 19:45:30,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:30,398 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2023-08-29 19:45:30,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-29 19:45:30,398 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-08-29 19:45:30,398 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2023-08-29 19:45:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:30,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:30,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:30,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:30,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2065211485, now seen corresponding path program 2 times [2023-08-29 19:45:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990118011] [2023-08-29 19:45:30,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:45:30,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:30,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:30,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:30,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-29 19:45:30,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 19:45:30,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:30,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 19:45:30,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:30,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:30,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:30,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990118011] [2023-08-29 19:45:30,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990118011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:30,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:30,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:30,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414383912] [2023-08-29 19:45:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:30,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:30,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:30,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:30,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:30,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:30,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:30,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:30,802 INFO L130 PetriNetUnfolder]: 168/299 cut-off events. [2023-08-29 19:45:30,802 INFO L131 PetriNetUnfolder]: For 1657/1657 co-relation queries the response was YES. [2023-08-29 19:45:30,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1074 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2023-08-29 19:45:30,804 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2023-08-29 19:45:30,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2023-08-29 19:45:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:45:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:45:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-29 19:45:30,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 19:45:30,805 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-29 19:45:30,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-29 19:45:30,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:30,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-29 19:45:30,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,808 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 476 transitions. [2023-08-29 19:45:30,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2023-08-29 19:45:30,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:30,812 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2023-08-29 19:45:30,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-08-29 19:45:30,813 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-29 19:45:30,813 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2023-08-29 19:45:30,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:30,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:30,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:30,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-08-29 19:45:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:31,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:31,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927585, now seen corresponding path program 3 times [2023-08-29 19:45:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:31,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167591765] [2023-08-29 19:45:31,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:45:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:31,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:31,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-29 19:45:31,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 19:45:31,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:31,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:45:31,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:31,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:31,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167591765] [2023-08-29 19:45:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167591765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:31,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:31,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:31,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443134222] [2023-08-29 19:45:31,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:31,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:31,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:31,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:31,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:31,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:31,264 INFO L130 PetriNetUnfolder]: 164/295 cut-off events. [2023-08-29 19:45:31,264 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2023-08-29 19:45:31,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2023-08-29 19:45:31,265 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2023-08-29 19:45:31,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2023-08-29 19:45:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:45:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:45:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-29 19:45:31,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 19:45:31,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-29 19:45:31,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-29 19:45:31,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:31,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-29 19:45:31,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,271 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 476 transitions. [2023-08-29 19:45:31,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2023-08-29 19:45:31,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 19:45:31,276 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2023-08-29 19:45:31,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-08-29 19:45:31,276 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-08-29 19:45:31,276 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2023-08-29 19:45:31,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:31,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:31,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:31,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:31,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:31,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2065153825, now seen corresponding path program 4 times [2023-08-29 19:45:31,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:31,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452987211] [2023-08-29 19:45:31,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:45:31,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:31,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:31,485 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:31,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-29 19:45:31,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:45:31,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:31,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 19:45:31,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:31,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:31,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452987211] [2023-08-29 19:45:31,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452987211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:31,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:31,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:31,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262567422] [2023-08-29 19:45:31,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:31,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:31,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:31,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:31,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:31,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:31,690 INFO L130 PetriNetUnfolder]: 176/315 cut-off events. [2023-08-29 19:45:31,690 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2023-08-29 19:45:31,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1176 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2023-08-29 19:45:31,692 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2023-08-29 19:45:31,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2023-08-29 19:45:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:45:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:45:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-08-29 19:45:31,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712301587301587 [2023-08-29 19:45:31,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-08-29 19:45:31,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-08-29 19:45:31,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:31,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-08-29 19:45:31,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,696 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 475 transitions. [2023-08-29 19:45:31,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2023-08-29 19:45:31,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:31,702 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2023-08-29 19:45:31,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-08-29 19:45:31,704 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-08-29 19:45:31,704 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2023-08-29 19:45:31,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:31,704 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:31,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:31,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:31,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 402976459, now seen corresponding path program 5 times [2023-08-29 19:45:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338875648] [2023-08-29 19:45:31,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:45:31,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:31,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:31,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:31,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-29 19:45:31,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:45:31,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:31,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:45:31,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:31,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:32,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:32,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338875648] [2023-08-29 19:45:32,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338875648] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:32,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:45:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700441685] [2023-08-29 19:45:32,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:32,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:45:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:45:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:45:32,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:32,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:32,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:32,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:32,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:32,631 INFO L130 PetriNetUnfolder]: 224/395 cut-off events. [2023-08-29 19:45:32,631 INFO L131 PetriNetUnfolder]: For 4433/4433 co-relation queries the response was YES. [2023-08-29 19:45:32,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1510 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2023-08-29 19:45:32,633 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2023-08-29 19:45:32,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2023-08-29 19:45:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 19:45:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 19:45:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-29 19:45:32,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-29 19:45:32,636 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-29 19:45:32,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-29 19:45:32,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:32,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-29 19:45:32,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:32,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:32,641 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:32,641 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1079 transitions. [2023-08-29 19:45:32,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2023-08-29 19:45:32,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:32,653 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2023-08-29 19:45:32,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-08-29 19:45:32,654 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2023-08-29 19:45:32,654 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2023-08-29 19:45:32,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:32,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:32,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:32,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:32,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:32,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:32,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash 380812761, now seen corresponding path program 6 times [2023-08-29 19:45:32,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:32,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830927917] [2023-08-29 19:45:32,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:45:32,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:32,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:32,863 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:32,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-29 19:45:32,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-29 19:45:32,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:32,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:45:32,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:32,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:33,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830927917] [2023-08-29 19:45:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830927917] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:33,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:33,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:45:33,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837438325] [2023-08-29 19:45:33,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:33,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:45:33,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:45:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:45:33,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:33,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:33,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:33,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:33,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:33,410 INFO L130 PetriNetUnfolder]: 248/443 cut-off events. [2023-08-29 19:45:33,410 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2023-08-29 19:45:33,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1711 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2023-08-29 19:45:33,417 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2023-08-29 19:45:33,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2023-08-29 19:45:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 19:45:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 19:45:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 809 transitions. [2023-08-29 19:45:33,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681712962962963 [2023-08-29 19:45:33,419 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 809 transitions. [2023-08-29 19:45:33,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 809 transitions. [2023-08-29 19:45:33,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:33,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 809 transitions. [2023-08-29 19:45:33,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 67.41666666666667) internal successors, (809), 12 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:33,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:33,423 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:33,423 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 809 transitions. [2023-08-29 19:45:33,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2023-08-29 19:45:33,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2023-08-29 19:45:33,434 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2023-08-29 19:45:33,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2023-08-29 19:45:33,434 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-29 19:45:33,435 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2023-08-29 19:45:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:33,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:33,435 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:33,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:33,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:33,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:33,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash 404049741, now seen corresponding path program 7 times [2023-08-29 19:45:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:33,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318661611] [2023-08-29 19:45:33,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:45:33,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:33,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:33,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:33,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-29 19:45:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:33,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:45:33,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:33,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:33,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:33,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318661611] [2023-08-29 19:45:33,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318661611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:33,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:33,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:45:33,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928058064] [2023-08-29 19:45:33,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:33,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:45:33,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:45:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:45:33,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:33,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:33,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:33,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:33,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:34,374 INFO L130 PetriNetUnfolder]: 336/603 cut-off events. [2023-08-29 19:45:34,374 INFO L131 PetriNetUnfolder]: For 12794/12794 co-relation queries the response was YES. [2023-08-29 19:45:34,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2591 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2023-08-29 19:45:34,377 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2023-08-29 19:45:34,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2023-08-29 19:45:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 19:45:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 19:45:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-29 19:45:34,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-29 19:45:34,396 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-29 19:45:34,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-29 19:45:34,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:34,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-29 19:45:34,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:34,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:34,402 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:34,402 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1079 transitions. [2023-08-29 19:45:34,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2023-08-29 19:45:34,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-29 19:45:34,417 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2023-08-29 19:45:34,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2023-08-29 19:45:34,418 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-08-29 19:45:34,418 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2023-08-29 19:45:34,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:34,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:34,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:34,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:34,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:34,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:34,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash 404765841, now seen corresponding path program 8 times [2023-08-29 19:45:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:34,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666477131] [2023-08-29 19:45:34,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:45:34,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:34,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:34,630 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:34,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-29 19:45:34,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:45:34,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:34,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:45:34,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:34,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:34,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666477131] [2023-08-29 19:45:34,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666477131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:34,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:45:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830284639] [2023-08-29 19:45:34,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:34,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:45:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:45:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:45:34,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:34,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:34,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:34,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:34,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:35,452 INFO L130 PetriNetUnfolder]: 384/691 cut-off events. [2023-08-29 19:45:35,452 INFO L131 PetriNetUnfolder]: For 24504/24504 co-relation queries the response was YES. [2023-08-29 19:45:35,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 24504/24504 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3071 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2023-08-29 19:45:35,456 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2023-08-29 19:45:35,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2023-08-29 19:45:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-29 19:45:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-29 19:45:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2023-08-29 19:45:35,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679783950617284 [2023-08-29 19:45:35,459 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2023-08-29 19:45:35,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2023-08-29 19:45:35,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:35,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2023-08-29 19:45:35,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:35,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:35,467 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:35,467 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1213 transitions. [2023-08-29 19:45:35,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2023-08-29 19:45:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2023-08-29 19:45:35,500 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2023-08-29 19:45:35,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2023-08-29 19:45:35,501 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2023-08-29 19:45:35,502 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2023-08-29 19:45:35,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:35,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:35,502 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:35,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:35,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:35,709 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:35,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1570592883, now seen corresponding path program 9 times [2023-08-29 19:45:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666008775] [2023-08-29 19:45:35,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:45:35,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:35,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:35,710 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:35,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-29 19:45:35,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-29 19:45:35,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:35,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:45:35,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:35,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:36,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:36,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666008775] [2023-08-29 19:45:36,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666008775] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:36,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:36,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:45:36,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862201289] [2023-08-29 19:45:36,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:36,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:45:36,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:36,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:45:36,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:45:36,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:36,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:36,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:36,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:37,128 INFO L130 PetriNetUnfolder]: 488/891 cut-off events. [2023-08-29 19:45:37,128 INFO L131 PetriNetUnfolder]: For 43601/43601 co-relation queries the response was YES. [2023-08-29 19:45:37,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 891 events. 488/891 cut-off events. For 43601/43601 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4317 event pairs, 88 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 7049. Up to 401 conditions per place. [2023-08-29 19:45:37,133 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 99 selfloop transitions, 63 changer transitions 43/205 dead transitions. [2023-08-29 19:45:37,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 3412 flow [2023-08-29 19:45:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-29 19:45:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-29 19:45:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1610 transitions. [2023-08-29 19:45:37,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46585648148148145 [2023-08-29 19:45:37,136 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1610 transitions. [2023-08-29 19:45:37,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1610 transitions. [2023-08-29 19:45:37,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:37,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1610 transitions. [2023-08-29 19:45:37,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.08333333333333) internal successors, (1610), 24 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:37,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:37,143 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:37,143 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1610 transitions. [2023-08-29 19:45:37,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 3412 flow [2023-08-29 19:45:37,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 205 transitions, 2935 flow, removed 222 selfloop flow, removed 8 redundant places. [2023-08-29 19:45:37,197 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 2082 flow [2023-08-29 19:45:37,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2082, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2023-08-29 19:45:37,197 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2023-08-29 19:45:37,197 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 2082 flow [2023-08-29 19:45:37,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:37,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:37,198 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:37,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-08-29 19:45:37,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:37,405 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:37,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash -925720759, now seen corresponding path program 10 times [2023-08-29 19:45:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:37,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615076878] [2023-08-29 19:45:37,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:45:37,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:37,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:37,407 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:37,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-29 19:45:37,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:45:37,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:37,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:45:37,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:37,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:37,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:37,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615076878] [2023-08-29 19:45:37,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615076878] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:37,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:37,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:45:37,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404501500] [2023-08-29 19:45:37,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:37,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:45:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:37,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:45:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:45:37,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:37,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:37,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:37,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:37,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:39,773 INFO L130 PetriNetUnfolder]: 692/1267 cut-off events. [2023-08-29 19:45:39,773 INFO L131 PetriNetUnfolder]: For 76869/76869 co-relation queries the response was YES. [2023-08-29 19:45:39,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1267 events. 692/1267 cut-off events. For 76869/76869 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6365 event pairs, 38 based on Foata normal form. 32/1299 useless extension candidates. Maximal degree in co-relation 12171. Up to 444 conditions per place. [2023-08-29 19:45:39,783 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 110 selfloop transitions, 147 changer transitions 27/284 dead transitions. [2023-08-29 19:45:39,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 5875 flow [2023-08-29 19:45:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-29 19:45:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-29 19:45:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2344 transitions. [2023-08-29 19:45:39,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650793650793651 [2023-08-29 19:45:39,786 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2344 transitions. [2023-08-29 19:45:39,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2344 transitions. [2023-08-29 19:45:39,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:39,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2344 transitions. [2023-08-29 19:45:39,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 66.97142857142858) internal successors, (2344), 35 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:39,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:39,792 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:39,793 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 2082 flow. Second operand 35 states and 2344 transitions. [2023-08-29 19:45:39,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 5875 flow [2023-08-29 19:45:39,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 5148 flow, removed 341 selfloop flow, removed 10 redundant places. [2023-08-29 19:45:39,865 INFO L231 Difference]: Finished difference. Result has 196 places, 191 transitions, 4139 flow [2023-08-29 19:45:39,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4139, PETRI_PLACES=196, PETRI_TRANSITIONS=191} [2023-08-29 19:45:39,865 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2023-08-29 19:45:39,865 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 191 transitions, 4139 flow [2023-08-29 19:45:39,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:39,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:39,866 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:39,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-08-29 19:45:40,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:40,072 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:40,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:40,072 INFO L85 PathProgramCache]: Analyzing trace with hash -925004659, now seen corresponding path program 11 times [2023-08-29 19:45:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:40,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956872115] [2023-08-29 19:45:40,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:45:40,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:40,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:40,074 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:40,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-29 19:45:40,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 19:45:40,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:40,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:45:40,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:40,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:40,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956872115] [2023-08-29 19:45:40,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956872115] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:40,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:40,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:45:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149001845] [2023-08-29 19:45:40,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:40,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:45:40,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:40,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:45:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:45:40,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:40,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 191 transitions, 4139 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:40,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:40,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:40,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:42,112 INFO L130 PetriNetUnfolder]: 756/1383 cut-off events. [2023-08-29 19:45:42,113 INFO L131 PetriNetUnfolder]: For 116743/116743 co-relation queries the response was YES. [2023-08-29 19:45:42,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 1383 events. 756/1383 cut-off events. For 116743/116743 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7128 event pairs, 30 based on Foata normal form. 40/1423 useless extension candidates. Maximal degree in co-relation 14476. Up to 492 conditions per place. [2023-08-29 19:45:42,126 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 84 selfloop transitions, 162 changer transitions 54/300 dead transitions. [2023-08-29 19:45:42,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 300 transitions, 6668 flow [2023-08-29 19:45:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-29 19:45:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-29 19:45:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2014 transitions. [2023-08-29 19:45:42,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46620370370370373 [2023-08-29 19:45:42,129 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2014 transitions. [2023-08-29 19:45:42,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2014 transitions. [2023-08-29 19:45:42,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:42,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2014 transitions. [2023-08-29 19:45:42,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.13333333333334) internal successors, (2014), 30 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:42,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:42,136 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:42,136 INFO L175 Difference]: Start difference. First operand has 196 places, 191 transitions, 4139 flow. Second operand 30 states and 2014 transitions. [2023-08-29 19:45:42,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 300 transitions, 6668 flow [2023-08-29 19:45:42,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 300 transitions, 4781 flow, removed 891 selfloop flow, removed 17 redundant places. [2023-08-29 19:45:42,346 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 3497 flow [2023-08-29 19:45:42,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3497, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2023-08-29 19:45:42,346 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 188 predicate places. [2023-08-29 19:45:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 3497 flow [2023-08-29 19:45:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:42,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:42,347 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:42,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:42,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:42,547 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:42,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2014607281, now seen corresponding path program 12 times [2023-08-29 19:45:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:42,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183622605] [2023-08-29 19:45:42,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:45:42,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:42,549 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:42,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-29 19:45:42,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 19:45:42,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:42,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:45:42,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:42,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:42,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183622605] [2023-08-29 19:45:42,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183622605] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:42,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:45:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377680013] [2023-08-29 19:45:42,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:45:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:45:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:45:43,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:43,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 3497 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:43,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:43,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:43,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:44,432 INFO L130 PetriNetUnfolder]: 840/1523 cut-off events. [2023-08-29 19:45:44,432 INFO L131 PetriNetUnfolder]: For 112483/112483 co-relation queries the response was YES. [2023-08-29 19:45:44,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14600 conditions, 1523 events. 840/1523 cut-off events. For 112483/112483 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7801 event pairs, 54 based on Foata normal form. 28/1551 useless extension candidates. Maximal degree in co-relation 14519. Up to 424 conditions per place. [2023-08-29 19:45:44,441 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 96 selfloop transitions, 176 changer transitions 50/322 dead transitions. [2023-08-29 19:45:44,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 322 transitions, 6365 flow [2023-08-29 19:45:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-29 19:45:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-29 19:45:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1880 transitions. [2023-08-29 19:45:44,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-08-29 19:45:44,443 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1880 transitions. [2023-08-29 19:45:44,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1880 transitions. [2023-08-29 19:45:44,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:44,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1880 transitions. [2023-08-29 19:45:44,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 67.14285714285714) internal successors, (1880), 28 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:44,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:44,448 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:44,448 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 3497 flow. Second operand 28 states and 1880 transitions. [2023-08-29 19:45:44,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 322 transitions, 6365 flow [2023-08-29 19:45:44,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 5818 flow, removed 215 selfloop flow, removed 19 redundant places. [2023-08-29 19:45:44,608 INFO L231 Difference]: Finished difference. Result has 236 places, 232 transitions, 4493 flow [2023-08-29 19:45:44,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4493, PETRI_PLACES=236, PETRI_TRANSITIONS=232} [2023-08-29 19:45:44,608 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-08-29 19:45:44,608 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 232 transitions, 4493 flow [2023-08-29 19:45:44,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:44,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:44,609 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:44,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-08-29 19:45:44,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:44,814 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:44,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash 790771329, now seen corresponding path program 13 times [2023-08-29 19:45:44,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:44,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041421797] [2023-08-29 19:45:44,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:45:44,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:44,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:44,815 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:44,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-29 19:45:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:45:44,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:45,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:45,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041421797] [2023-08-29 19:45:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041421797] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:45,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:45,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:45:45,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647047449] [2023-08-29 19:45:45,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:45,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:45:45,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:45:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:45:45,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:45,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 232 transitions, 4493 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:45,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:45,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:45,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:50,963 INFO L130 PetriNetUnfolder]: 924/1663 cut-off events. [2023-08-29 19:45:50,963 INFO L131 PetriNetUnfolder]: For 171852/171852 co-relation queries the response was YES. [2023-08-29 19:45:50,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18483 conditions, 1663 events. 924/1663 cut-off events. For 171852/171852 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8305 event pairs, 12 based on Foata normal form. 28/1691 useless extension candidates. Maximal degree in co-relation 18391. Up to 480 conditions per place. [2023-08-29 19:45:50,974 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 95 selfloop transitions, 217 changer transitions 102/414 dead transitions. [2023-08-29 19:45:50,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 414 transitions, 9487 flow [2023-08-29 19:45:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-08-29 19:45:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-08-29 19:45:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3609 transitions. [2023-08-29 19:45:50,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46412037037037035 [2023-08-29 19:45:50,978 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3609 transitions. [2023-08-29 19:45:50,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3609 transitions. [2023-08-29 19:45:50,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:50,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3609 transitions. [2023-08-29 19:45:50,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 66.83333333333333) internal successors, (3609), 54 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:50,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 144.0) internal successors, (7920), 55 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:50,987 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 144.0) internal successors, (7920), 55 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:50,987 INFO L175 Difference]: Start difference. First operand has 236 places, 232 transitions, 4493 flow. Second operand 54 states and 3609 transitions. [2023-08-29 19:45:50,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 414 transitions, 9487 flow [2023-08-29 19:45:51,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 414 transitions, 8807 flow, removed 313 selfloop flow, removed 9 redundant places. [2023-08-29 19:45:51,283 INFO L231 Difference]: Finished difference. Result has 294 places, 253 transitions, 5443 flow [2023-08-29 19:45:51,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=5443, PETRI_PLACES=294, PETRI_TRANSITIONS=253} [2023-08-29 19:45:51,283 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 270 predicate places. [2023-08-29 19:45:51,284 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 253 transitions, 5443 flow [2023-08-29 19:45:51,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:51,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:51,284 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:51,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:51,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:51,484 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:51,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1030732913, now seen corresponding path program 14 times [2023-08-29 19:45:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691734193] [2023-08-29 19:45:51,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:45:51,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:51,486 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:51,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-29 19:45:51,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:45:51,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:51,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:45:51,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:51,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:52,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:52,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691734193] [2023-08-29 19:45:52,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691734193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:52,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:45:52,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719253368] [2023-08-29 19:45:52,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:45:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:45:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:45:52,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:52,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 253 transitions, 5443 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:52,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:52,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:52,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:54,050 INFO L130 PetriNetUnfolder]: 980/1775 cut-off events. [2023-08-29 19:45:54,051 INFO L131 PetriNetUnfolder]: For 253184/253184 co-relation queries the response was YES. [2023-08-29 19:45:54,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22231 conditions, 1775 events. 980/1775 cut-off events. For 253184/253184 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8885 event pairs, 367 based on Foata normal form. 40/1815 useless extension candidates. Maximal degree in co-relation 22125. Up to 1501 conditions per place. [2023-08-29 19:45:54,064 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 263 selfloop transitions, 33 changer transitions 47/343 dead transitions. [2023-08-29 19:45:54,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 343 transitions, 8675 flow [2023-08-29 19:45:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-29 19:45:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-29 19:45:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1737 transitions. [2023-08-29 19:45:54,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639423076923077 [2023-08-29 19:45:54,067 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1737 transitions. [2023-08-29 19:45:54,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1737 transitions. [2023-08-29 19:45:54,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:54,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1737 transitions. [2023-08-29 19:45:54,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 66.8076923076923) internal successors, (1737), 26 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 144.0) internal successors, (3888), 27 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,072 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 144.0) internal successors, (3888), 27 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,072 INFO L175 Difference]: Start difference. First operand has 294 places, 253 transitions, 5443 flow. Second operand 26 states and 1737 transitions. [2023-08-29 19:45:54,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 343 transitions, 8675 flow [2023-08-29 19:45:54,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 343 transitions, 6940 flow, removed 617 selfloop flow, removed 43 redundant places. [2023-08-29 19:45:54,436 INFO L231 Difference]: Finished difference. Result has 290 places, 267 transitions, 4832 flow [2023-08-29 19:45:54,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4832, PETRI_PLACES=290, PETRI_TRANSITIONS=267} [2023-08-29 19:45:54,437 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 266 predicate places. [2023-08-29 19:45:54,437 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 267 transitions, 4832 flow [2023-08-29 19:45:54,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:54,438 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:54,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-08-29 19:45:54,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:54,644 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:54,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:54,645 INFO L85 PathProgramCache]: Analyzing trace with hash -229469181, now seen corresponding path program 15 times [2023-08-29 19:45:54,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:45:54,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633328477] [2023-08-29 19:45:54,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:45:54,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:45:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:45:54,647 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:45:54,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-29 19:45:54,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-29 19:45:54,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:54,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:45:54,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:54,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:55,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:45:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633328477] [2023-08-29 19:45:55,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633328477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:55,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:45:55,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:45:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906968652] [2023-08-29 19:45:55,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:55,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:45:55,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:45:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:45:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:45:55,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:55,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 267 transitions, 4832 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:55,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:55,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:59,762 INFO L130 PetriNetUnfolder]: 1264/2335 cut-off events. [2023-08-29 19:45:59,762 INFO L131 PetriNetUnfolder]: For 409335/409335 co-relation queries the response was YES. [2023-08-29 19:45:59,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31137 conditions, 2335 events. 1264/2335 cut-off events. For 409335/409335 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12467 event pairs, 335 based on Foata normal form. 40/2375 useless extension candidates. Maximal degree in co-relation 31021. Up to 1316 conditions per place. [2023-08-29 19:45:59,780 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 305 selfloop transitions, 122 changer transitions 59/486 dead transitions. [2023-08-29 19:45:59,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 486 transitions, 12007 flow [2023-08-29 19:45:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-29 19:45:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-29 19:45:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3261 transitions. [2023-08-29 19:45:59,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46215986394557823 [2023-08-29 19:45:59,783 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3261 transitions. [2023-08-29 19:45:59,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3261 transitions. [2023-08-29 19:45:59,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:59,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3261 transitions. [2023-08-29 19:45:59,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 66.55102040816327) internal successors, (3261), 49 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:59,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:59,792 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:59,792 INFO L175 Difference]: Start difference. First operand has 290 places, 267 transitions, 4832 flow. Second operand 49 states and 3261 transitions. [2023-08-29 19:45:59,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 486 transitions, 12007 flow [2023-08-29 19:46:00,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 486 transitions, 11247 flow, removed 361 selfloop flow, removed 11 redundant places. [2023-08-29 19:46:00,386 INFO L231 Difference]: Finished difference. Result has 352 places, 330 transitions, 7249 flow [2023-08-29 19:46:00,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7249, PETRI_PLACES=352, PETRI_TRANSITIONS=330} [2023-08-29 19:46:00,386 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2023-08-29 19:46:00,387 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 330 transitions, 7249 flow [2023-08-29 19:46:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:00,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:00,387 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:00,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:00,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:00,587 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:00,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash -912191537, now seen corresponding path program 16 times [2023-08-29 19:46:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:00,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242454653] [2023-08-29 19:46:00,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:46:00,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:00,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:00,589 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:00,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-29 19:46:00,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:46:00,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:46:00,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:46:00,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:00,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:01,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:46:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242454653] [2023-08-29 19:46:01,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242454653] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:01,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:46:01,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:46:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146640924] [2023-08-29 19:46:01,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:46:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:46:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:46:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:46:01,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:46:01,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 330 transitions, 7249 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:01,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:01,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:46:01,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:09,236 INFO L130 PetriNetUnfolder]: 1872/3451 cut-off events. [2023-08-29 19:46:09,236 INFO L131 PetriNetUnfolder]: For 926017/926017 co-relation queries the response was YES. [2023-08-29 19:46:09,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57384 conditions, 3451 events. 1872/3451 cut-off events. For 926017/926017 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 19912 event pairs, 65 based on Foata normal form. 56/3507 useless extension candidates. Maximal degree in co-relation 57243. Up to 1244 conditions per place. [2023-08-29 19:46:09,270 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 217 selfloop transitions, 423 changer transitions 63/703 dead transitions. [2023-08-29 19:46:09,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 703 transitions, 22061 flow [2023-08-29 19:46:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-29 19:46:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-29 19:46:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4667 transitions. [2023-08-29 19:46:09,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46299603174603177 [2023-08-29 19:46:09,275 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4667 transitions. [2023-08-29 19:46:09,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4667 transitions. [2023-08-29 19:46:09,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:09,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4667 transitions. [2023-08-29 19:46:09,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 66.67142857142858) internal successors, (4667), 70 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:09,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:09,286 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:09,287 INFO L175 Difference]: Start difference. First operand has 352 places, 330 transitions, 7249 flow. Second operand 70 states and 4667 transitions. [2023-08-29 19:46:09,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 703 transitions, 22061 flow [2023-08-29 19:46:10,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 703 transitions, 19579 flow, removed 1195 selfloop flow, removed 21 redundant places. [2023-08-29 19:46:10,696 INFO L231 Difference]: Finished difference. Result has 424 places, 513 transitions, 15746 flow [2023-08-29 19:46:10,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=15746, PETRI_PLACES=424, PETRI_TRANSITIONS=513} [2023-08-29 19:46:10,696 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 400 predicate places. [2023-08-29 19:46:10,697 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 513 transitions, 15746 flow [2023-08-29 19:46:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:10,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:10,697 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:10,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:10,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:10,897 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:10,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -314878821, now seen corresponding path program 17 times [2023-08-29 19:46:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:10,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757318234] [2023-08-29 19:46:10,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:46:10,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:10,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:10,899 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:10,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-29 19:46:10,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-29 19:46:10,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:46:10,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:46:10,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:11,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:11,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:46:11,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757318234] [2023-08-29 19:46:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757318234] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:11,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:46:11,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:46:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932995740] [2023-08-29 19:46:11,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:46:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:46:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:46:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:46:11,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:46:11,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 513 transitions, 15746 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:11,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:11,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:46:11,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:16,035 INFO L130 PetriNetUnfolder]: 1892/3487 cut-off events. [2023-08-29 19:46:16,035 INFO L131 PetriNetUnfolder]: For 1406781/1406781 co-relation queries the response was YES. [2023-08-29 19:46:16,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63734 conditions, 3487 events. 1892/3487 cut-off events. For 1406781/1406781 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 20098 event pairs, 27 based on Foata normal form. 96/3583 useless extension candidates. Maximal degree in co-relation 63572. Up to 1260 conditions per place. [2023-08-29 19:46:16,070 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 133 selfloop transitions, 456 changer transitions 90/679 dead transitions. [2023-08-29 19:46:16,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 679 transitions, 23596 flow [2023-08-29 19:46:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-29 19:46:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-29 19:46:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3213 transitions. [2023-08-29 19:46:16,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2023-08-29 19:46:16,073 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3213 transitions. [2023-08-29 19:46:16,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3213 transitions. [2023-08-29 19:46:16,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:16,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3213 transitions. [2023-08-29 19:46:16,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 66.9375) internal successors, (3213), 48 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:16,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:16,080 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:16,080 INFO L175 Difference]: Start difference. First operand has 424 places, 513 transitions, 15746 flow. Second operand 48 states and 3213 transitions. [2023-08-29 19:46:16,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 679 transitions, 23596 flow [2023-08-29 19:46:18,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 679 transitions, 14594 flow, removed 4368 selfloop flow, removed 26 redundant places. [2023-08-29 19:46:18,814 INFO L231 Difference]: Finished difference. Result has 450 places, 525 transitions, 10644 flow [2023-08-29 19:46:18,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=7468, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10644, PETRI_PLACES=450, PETRI_TRANSITIONS=525} [2023-08-29 19:46:18,815 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 426 predicate places. [2023-08-29 19:46:18,815 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 525 transitions, 10644 flow [2023-08-29 19:46:18,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:18,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:18,816 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:18,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-08-29 19:46:19,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:19,020 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:19,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:19,020 INFO L85 PathProgramCache]: Analyzing trace with hash -888381091, now seen corresponding path program 18 times [2023-08-29 19:46:19,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:19,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75908927] [2023-08-29 19:46:19,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:46:19,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:19,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:19,023 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:19,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-29 19:46:19,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-08-29 19:46:19,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-08-29 19:46:19,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 19:46:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:46:19,192 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 19:46:19,197 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 19:46:19,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-29 19:46:19,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 19:46:19,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 19:46:19,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 19:46:19,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-29 19:46:19,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 19:46:19,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 19:46:19,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 19:46:19,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:19,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:19,409 INFO L445 BasicCegarLoop]: Path program histogram: [18, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:19,412 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:46:19,412 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:46:19,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:46:19 BasicIcfg [2023-08-29 19:46:19,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:46:19,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:46:19,449 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:46:19,450 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:46:19,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:45:21" (3/4) ... [2023-08-29 19:46:19,453 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 19:46:19,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:46:19,453 INFO L158 Benchmark]: Toolchain (without parser) took 58802.93ms. Allocated memory was 71.3MB in the beginning and 708.8MB in the end (delta: 637.5MB). Free memory was 41.7MB in the beginning and 355.9MB in the end (delta: -314.2MB). Peak memory consumption was 322.6MB. Max. memory is 16.1GB. [2023-08-29 19:46:19,453 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:46:19,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.79ms. Allocated memory is still 71.3MB. Free memory was 41.6MB in the beginning and 38.9MB in the end (delta: 2.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-08-29 19:46:19,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.48ms. Allocated memory is still 71.3MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:46:19,454 INFO L158 Benchmark]: Boogie Preprocessor took 41.55ms. Allocated memory is still 71.3MB. Free memory was 36.8MB in the beginning and 35.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:46:19,454 INFO L158 Benchmark]: RCFGBuilder took 346.17ms. Allocated memory is still 71.3MB. Free memory was 35.0MB in the beginning and 41.9MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-29 19:46:19,454 INFO L158 Benchmark]: TraceAbstraction took 58059.30ms. Allocated memory was 71.3MB in the beginning and 708.8MB in the end (delta: 637.5MB). Free memory was 41.2MB in the beginning and 355.9MB in the end (delta: -314.7MB). Peak memory consumption was 321.8MB. Max. memory is 16.1GB. [2023-08-29 19:46:19,454 INFO L158 Benchmark]: Witness Printer took 6.76ms. Allocated memory is still 708.8MB. Free memory is still 355.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:46:19,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.79ms. Allocated memory is still 71.3MB. Free memory was 41.6MB in the beginning and 38.9MB in the end (delta: 2.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.48ms. Allocated memory is still 71.3MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.55ms. Allocated memory is still 71.3MB. Free memory was 36.8MB in the beginning and 35.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 346.17ms. Allocated memory is still 71.3MB. Free memory was 35.0MB in the beginning and 41.9MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 58059.30ms. Allocated memory was 71.3MB in the beginning and 708.8MB in the end (delta: 637.5MB). Free memory was 41.2MB in the beginning and 355.9MB in the end (delta: -314.7MB). Peak memory consumption was 321.8MB. Max. memory is 16.1GB. * Witness Printer took 6.76ms. Allocated memory is still 708.8MB. Free memory is still 355.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 75 PlacesBefore, 24 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 994, independent: 967, independent conditional: 0, independent unconditional: 967, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 657, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 994, independent: 322, independent conditional: 0, independent unconditional: 322, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=27, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, i=3, id1={7:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-1] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=27, arg={0:0}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, i=3, id1={7:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=27, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, condI=0, i=7, id1={7:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=27, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, condI=0, condJ=1, i=25, id1={7:0}, id2={3:0}, j=26, k=10, k=10] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 58.0s, OverallIterations: 26, TraceHistogramMax: 10, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 41.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 5717 SdHoareTripleChecker+Valid, 11.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5500 mSDsluCounter, 1863 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1801 mSDsCounter, 480 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16421 IncrementalHoareTripleChecker+Invalid, 16907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 480 mSolverCounterUnsat, 62 mSDtfsCounter, 16421 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 854 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 675 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8858 ImplicationChecksByTransitivity, 23.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15746occurred in iteration=24, InterpolantAutomatonStates: 490, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 464 ConstructedInterpolants, 6 QuantifiedInterpolants, 3576 SizeOfPredicates, 116 NumberOfNonLiveVariables, 1907 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 38 InterpolantComputations, 12 PerfectInterpolantSequences, 8/440 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 19:46:19,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample