./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.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-deagle/arithmetic_prog_bad.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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --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 [2023-08-30 01:32:51,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:32:51,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:32:51,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:32:51,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:32:51,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:32:51,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:32:51,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:32:51,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:32:51,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:32:51,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:32:51,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:32:51,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:32:51,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:32:51,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:32:51,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:32:51,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:32:51,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:32:51,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:32:51,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:32:51,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:32:51,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:32:51,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:32:51,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:32:51,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:32:51,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:32:51,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:32:51,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:32:51,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:32:51,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:32:51,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:32:51,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:32:51,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:32:51,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:32:51,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:32:51,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:32:51,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:32:51,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:32:51,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:32:51,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:32:51,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:32:51,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:32:51,778 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:32:51,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:32:51,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:32:51,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:32:51,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:32:51,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:32:51,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:32:51,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:32:51,781 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:32:51,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:32:51,782 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:32:51,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:32:51,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:32:51,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:32:51,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:32:51,783 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:32:51,783 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:32:51,783 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:32:51,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:32:51,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:32:51,784 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:32:51,784 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:32:51,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:32:51,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:32:51,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:32:51,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:32:51,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:32:51,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:32:51,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:32:51,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:32:51,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:32:51,786 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:32:51,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:32:51,786 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:32:51,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:32:52,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:32:52,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:32:52,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:32:52,103 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:32:52,103 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:32:52,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-30 01:32:53,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:32:53,642 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:32:53,643 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-30 01:32:53,666 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ccfd621/332e2e13f3224bc681cf550b949d14b4/FLAG747ae0d08 [2023-08-30 01:32:53,947 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ccfd621/332e2e13f3224bc681cf550b949d14b4 [2023-08-30 01:32:53,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:32:53,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:32:53,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:32:53,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:32:53,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:32:53,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:32:53" (1/1) ... [2023-08-30 01:32:53,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6433b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:53, skipping insertion in model container [2023-08-30 01:32:53,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:32:53" (1/1) ... [2023-08-30 01:32:53,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:32:54,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:32:54,376 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-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-30 01:32:54,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:32:54,400 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:32:54,454 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-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-30 01:32:54,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:32:54,518 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:32:54,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54 WrapperNode [2023-08-30 01:32:54,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:32:54,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:32:54,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:32:54,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:32:54,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,583 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-08-30 01:32:54,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:32:54,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:32:54,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:32:54,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:32:54,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:32:54,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:32:54,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:32:54,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:32:54,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (1/1) ... [2023-08-30 01:32:54,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:32:54,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:32:54,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 01:32:54,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 01:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 01:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 01:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:32:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:32:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:32:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:32:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 01:32:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 01:32:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:32:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 01:32:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:32:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:32:54,722 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:32:54,919 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:32:54,920 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:32:55,153 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:32:55,159 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:32:55,160 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 01:32:55,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:32:55 BoogieIcfgContainer [2023-08-30 01:32:55,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:32:55,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:32:55,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:32:55,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:32:55,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:32:53" (1/3) ... [2023-08-30 01:32:55,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577c0466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:32:55, skipping insertion in model container [2023-08-30 01:32:55,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:32:54" (2/3) ... [2023-08-30 01:32:55,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577c0466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:32:55, skipping insertion in model container [2023-08-30 01:32:55,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:32:55" (3/3) ... [2023-08-30 01:32:55,170 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-08-30 01:32:55,204 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:32:55,204 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 01:32:55,204 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:32:55,290 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 01:32:55,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 143 transitions, 302 flow [2023-08-30 01:32:55,373 INFO L130 PetriNetUnfolder]: 10/141 cut-off events. [2023-08-30 01:32:55,373 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:32:55,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 141 events. 10/141 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-30 01:32:55,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 143 transitions, 302 flow [2023-08-30 01:32:55,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 137 transitions, 286 flow [2023-08-30 01:32:55,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:32:55,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 137 transitions, 286 flow [2023-08-30 01:32:55,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 137 transitions, 286 flow [2023-08-30 01:32:55,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 137 transitions, 286 flow [2023-08-30 01:32:55,429 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 01:32:55,429 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:32:55,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 10/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-30 01:32:55,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2023-08-30 01:33:01,917 INFO L134 LiptonReduction]: Checked pairs total: 5425 [2023-08-30 01:33:01,917 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-30 01:33:01,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:33:01,935 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;@3502f42c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:33:01,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 01:33:01,937 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 01:33:01,937 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:33:01,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:01,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 01:33:01,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:01,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 544, now seen corresponding path program 1 times [2023-08-30 01:33:01,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:01,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310814744] [2023-08-30 01:33:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:01,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:02,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310814744] [2023-08-30 01:33:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310814744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:02,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:02,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 01:33:02,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877027945] [2023-08-30 01:33:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:02,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 01:33:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 01:33:02,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 01:33:02,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 273 [2023-08-30 01:33:02,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:02,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 273 [2023-08-30 01:33:02,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:02,180 INFO L130 PetriNetUnfolder]: 264/513 cut-off events. [2023-08-30 01:33:02,180 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 01:33:02,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 513 events. 264/513 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2440 event pairs, 168 based on Foata normal form. 24/383 useless extension candidates. Maximal degree in co-relation 833. Up to 409 conditions per place. [2023-08-30 01:33:02,185 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-30 01:33:02,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 142 flow [2023-08-30 01:33:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 01:33:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 01:33:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 297 transitions. [2023-08-30 01:33:02,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439560439560439 [2023-08-30 01:33:02,198 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 297 transitions. [2023-08-30 01:33:02,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 297 transitions. [2023-08-30 01:33:02,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:02,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 297 transitions. [2023-08-30 01:33:02,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,213 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,215 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 2 states and 297 transitions. [2023-08-30 01:33:02,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 142 flow [2023-08-30 01:33:02,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 01:33:02,221 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow [2023-08-30 01:33:02,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-30 01:33:02,226 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 01:33:02,226 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow [2023-08-30 01:33:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:02,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:33:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 01:33:02,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:02,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 533161, now seen corresponding path program 1 times [2023-08-30 01:33:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:02,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052064076] [2023-08-30 01:33:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:02,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:02,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:02,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052064076] [2023-08-30 01:33:02,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052064076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:02,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:02,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:02,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585686660] [2023-08-30 01:33:02,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:02,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:02,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 01:33:02,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:02,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 01:33:02,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:02,556 INFO L130 PetriNetUnfolder]: 252/486 cut-off events. [2023-08-30 01:33:02,557 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:02,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 486 events. 252/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2277 event pairs, 160 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 878. Up to 385 conditions per place. [2023-08-30 01:33:02,560 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-30 01:33:02,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 126 flow [2023-08-30 01:33:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 01:33:02,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884004884004884 [2023-08-30 01:33:02,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 01:33:02,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 01:33:02,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:02,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 01:33:02,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,568 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 3 states and 400 transitions. [2023-08-30 01:33:02,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 126 flow [2023-08-30 01:33:02,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:33:02,569 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow [2023-08-30 01:33:02,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-08-30 01:33:02,570 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 01:33:02,571 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow [2023-08-30 01:33:02,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:02,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:33:02,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 01:33:02,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:02,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:02,574 INFO L85 PathProgramCache]: Analyzing trace with hash 533162, now seen corresponding path program 1 times [2023-08-30 01:33:02,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:02,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808540880] [2023-08-30 01:33:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:02,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808540880] [2023-08-30 01:33:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808540880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:02,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293492252] [2023-08-30 01:33:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:02,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:02,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273 [2023-08-30 01:33:02,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:02,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273 [2023-08-30 01:33:02,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:02,843 INFO L130 PetriNetUnfolder]: 240/459 cut-off events. [2023-08-30 01:33:02,843 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:02,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 459 events. 240/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2102 event pairs, 152 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 831. Up to 363 conditions per place. [2023-08-30 01:33:02,848 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 01:33:02,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 122 flow [2023-08-30 01:33:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-30 01:33:02,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006105006105006 [2023-08-30 01:33:02,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-30 01:33:02,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-30 01:33:02,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:02,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-30 01:33:02,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,855 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 410 transitions. [2023-08-30 01:33:02,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 122 flow [2023-08-30 01:33:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:02,856 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2023-08-30 01:33:02,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-30 01:33:02,858 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-08-30 01:33:02,858 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2023-08-30 01:33:02,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:02,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:02,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:33:02,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 01:33:02,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:02,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash 512378966, now seen corresponding path program 1 times [2023-08-30 01:33:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:02,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164669266] [2023-08-30 01:33:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:02,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:03,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:03,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164669266] [2023-08-30 01:33:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164669266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:33:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914546800] [2023-08-30 01:33:03,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:03,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:33:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:33:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:33:03,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-30 01:33:03,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:03,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-30 01:33:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:03,165 INFO L130 PetriNetUnfolder]: 180/354 cut-off events. [2023-08-30 01:33:03,165 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:03,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 354 events. 180/354 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1531 event pairs, 112 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 641. Up to 278 conditions per place. [2023-08-30 01:33:03,168 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-30 01:33:03,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 118 flow [2023-08-30 01:33:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-30 01:33:03,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2023-08-30 01:33:03,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-30 01:33:03,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-30 01:33:03,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:03,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-30 01:33:03,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,174 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 402 transitions. [2023-08-30 01:33:03,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 118 flow [2023-08-30 01:33:03,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:03,175 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2023-08-30 01:33:03,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 01:33:03,176 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 01:33:03,176 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2023-08-30 01:33:03,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:03,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:33:03,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 01:33:03,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:03,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash 512378967, now seen corresponding path program 1 times [2023-08-30 01:33:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341635557] [2023-08-30 01:33:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:03,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341635557] [2023-08-30 01:33:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341635557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:03,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:33:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110627505] [2023-08-30 01:33:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:03,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:33:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:33:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:33:03,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 273 [2023-08-30 01:33:03,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:03,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 273 [2023-08-30 01:33:03,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:03,338 INFO L130 PetriNetUnfolder]: 120/249 cut-off events. [2023-08-30 01:33:03,338 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:03,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 249 events. 120/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 992 event pairs, 72 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 451. Up to 193 conditions per place. [2023-08-30 01:33:03,339 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 01:33:03,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow [2023-08-30 01:33:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-30 01:33:03,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46764346764346765 [2023-08-30 01:33:03,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-30 01:33:03,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-30 01:33:03,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:03,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-30 01:33:03,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,345 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 383 transitions. [2023-08-30 01:33:03,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow [2023-08-30 01:33:03,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:03,346 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow [2023-08-30 01:33:03,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-30 01:33:03,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-30 01:33:03,347 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow [2023-08-30 01:33:03,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:03,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:03,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 01:33:03,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:03,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -261057374, now seen corresponding path program 1 times [2023-08-30 01:33:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890791403] [2023-08-30 01:33:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:03,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890791403] [2023-08-30 01:33:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890791403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:03,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704438976] [2023-08-30 01:33:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:03,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:03,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273 [2023-08-30 01:33:03,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:03,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273 [2023-08-30 01:33:03,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:03,471 INFO L130 PetriNetUnfolder]: 189/435 cut-off events. [2023-08-30 01:33:03,471 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:33:03,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 435 events. 189/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2003 event pairs, 72 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 745. Up to 195 conditions per place. [2023-08-30 01:33:03,473 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 01:33:03,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 167 flow [2023-08-30 01:33:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-30 01:33:03,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-30 01:33:03,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-30 01:33:03,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-30 01:33:03,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:03,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-30 01:33:03,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,479 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 423 transitions. [2023-08-30 01:33:03,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 167 flow [2023-08-30 01:33:03,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:03,481 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow [2023-08-30 01:33:03,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 01:33:03,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 01:33:03,482 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow [2023-08-30 01:33:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:03,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:03,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 01:33:03,483 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:03,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1965737995, now seen corresponding path program 1 times [2023-08-30 01:33:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:03,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002352071] [2023-08-30 01:33:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:03,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:03,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002352071] [2023-08-30 01:33:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002352071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:03,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:03,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:03,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123385645] [2023-08-30 01:33:03,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:03,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:03,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:03,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:03,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273 [2023-08-30 01:33:03,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:03,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273 [2023-08-30 01:33:03,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:03,639 INFO L130 PetriNetUnfolder]: 297/642 cut-off events. [2023-08-30 01:33:03,639 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 01:33:03,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 642 events. 297/642 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3077 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 1202. Up to 300 conditions per place. [2023-08-30 01:33:03,642 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 35 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-30 01:33:03,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 191 flow [2023-08-30 01:33:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-30 01:33:03,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-30 01:33:03,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-30 01:33:03,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-30 01:33:03,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:03,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-30 01:33:03,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,648 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 423 transitions. [2023-08-30 01:33:03,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 191 flow [2023-08-30 01:33:03,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:03,649 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2023-08-30 01:33:03,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-08-30 01:33:03,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-08-30 01:33:03,650 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow [2023-08-30 01:33:03,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:03,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:03,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 01:33:03,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:03,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1443448180, now seen corresponding path program 1 times [2023-08-30 01:33:03,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:03,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239673156] [2023-08-30 01:33:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:03,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:03,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:03,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239673156] [2023-08-30 01:33:03,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239673156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:03,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667296886] [2023-08-30 01:33:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:03,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:03,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:03,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:03,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 01:33:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:03,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 01:33:03,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:03,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:03,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667296886] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:03,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:33:03,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 01:33:03,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138597587] [2023-08-30 01:33:03,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:03,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:33:03,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:03,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:33:03,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:33:03,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 01:33:03,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 129.42857142857142) internal successors, (906), 7 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:03,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:03,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 01:33:03,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:04,233 INFO L130 PetriNetUnfolder]: 593/1323 cut-off events. [2023-08-30 01:33:04,234 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2023-08-30 01:33:04,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 1323 events. 593/1323 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7089 event pairs, 42 based on Foata normal form. 74/1348 useless extension candidates. Maximal degree in co-relation 2516. Up to 168 conditions per place. [2023-08-30 01:33:04,241 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 105 selfloop transitions, 27 changer transitions 0/141 dead transitions. [2023-08-30 01:33:04,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 141 transitions, 631 flow [2023-08-30 01:33:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 01:33:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 01:33:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1754 transitions. [2023-08-30 01:33:04,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49422372499295575 [2023-08-30 01:33:04,246 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1754 transitions. [2023-08-30 01:33:04,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1754 transitions. [2023-08-30 01:33:04,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:04,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1754 transitions. [2023-08-30 01:33:04,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 134.92307692307693) internal successors, (1754), 13 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:04,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:04,255 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:04,255 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 13 states and 1754 transitions. [2023-08-30 01:33:04,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 141 transitions, 631 flow [2023-08-30 01:33:04,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 141 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:04,259 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 302 flow [2023-08-30 01:33:04,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-30 01:33:04,259 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-30 01:33:04,260 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 302 flow [2023-08-30 01:33:04,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.42857142857142) internal successors, (906), 7 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:04,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:04,260 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:04,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:04,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:04,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:04,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash 938211468, now seen corresponding path program 1 times [2023-08-30 01:33:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:04,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38145495] [2023-08-30 01:33:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 01:33:04,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:04,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38145495] [2023-08-30 01:33:04,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38145495] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:04,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871164663] [2023-08-30 01:33:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:04,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:04,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:04,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:04,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 01:33:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:04,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:04,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 01:33:04,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871164663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:04,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 01:33:04,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-30 01:33:04,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480905194] [2023-08-30 01:33:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:33:04,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:33:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:33:04,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273 [2023-08-30 01:33:04,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:04,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:04,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273 [2023-08-30 01:33:04,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:05,315 INFO L130 PetriNetUnfolder]: 2550/4433 cut-off events. [2023-08-30 01:33:05,316 INFO L131 PetriNetUnfolder]: For 5385/5385 co-relation queries the response was YES. [2023-08-30 01:33:05,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11736 conditions, 4433 events. 2550/4433 cut-off events. For 5385/5385 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 23912 event pairs, 485 based on Foata normal form. 0/4081 useless extension candidates. Maximal degree in co-relation 11721. Up to 1651 conditions per place. [2023-08-30 01:33:05,341 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 151 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2023-08-30 01:33:05,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 172 transitions, 1280 flow [2023-08-30 01:33:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:33:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:33:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 964 transitions. [2023-08-30 01:33:05,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044479330193616 [2023-08-30 01:33:05,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 964 transitions. [2023-08-30 01:33:05,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 964 transitions. [2023-08-30 01:33:05,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:05,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 964 transitions. [2023-08-30 01:33:05,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,351 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 302 flow. Second operand 7 states and 964 transitions. [2023-08-30 01:33:05,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 172 transitions, 1280 flow [2023-08-30 01:33:05,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 172 transitions, 1179 flow, removed 33 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:05,377 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 408 flow [2023-08-30 01:33:05,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2023-08-30 01:33:05,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-30 01:33:05,379 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 408 flow [2023-08-30 01:33:05,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:05,379 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:05,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:05,585 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,SelfDestructingSolverStorable8 [2023-08-30 01:33:05,586 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:05,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash 646760182, now seen corresponding path program 2 times [2023-08-30 01:33:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:05,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14422111] [2023-08-30 01:33:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:05,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 01:33:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:05,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14422111] [2023-08-30 01:33:05,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14422111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:05,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:05,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398018971] [2023-08-30 01:33:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:05,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273 [2023-08-30 01:33:05,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:05,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273 [2023-08-30 01:33:05,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:05,969 INFO L130 PetriNetUnfolder]: 813/1815 cut-off events. [2023-08-30 01:33:05,970 INFO L131 PetriNetUnfolder]: For 3953/3953 co-relation queries the response was YES. [2023-08-30 01:33:05,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1815 events. 813/1815 cut-off events. For 3953/3953 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10202 event pairs, 177 based on Foata normal form. 198/2012 useless extension candidates. Maximal degree in co-relation 5686. Up to 794 conditions per place. [2023-08-30 01:33:05,983 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 47 selfloop transitions, 20 changer transitions 0/80 dead transitions. [2023-08-30 01:33:05,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 595 flow [2023-08-30 01:33:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-08-30 01:33:05,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49694749694749696 [2023-08-30 01:33:05,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-08-30 01:33:05,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-08-30 01:33:05,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:05,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-08-30 01:33:05,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:05,988 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 408 flow. Second operand 3 states and 407 transitions. [2023-08-30 01:33:05,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 595 flow [2023-08-30 01:33:05,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 577 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:06,000 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 369 flow [2023-08-30 01:33:06,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-08-30 01:33:06,001 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 01:33:06,001 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 369 flow [2023-08-30 01:33:06,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:06,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:06,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 01:33:06,002 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:06,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1563860526, now seen corresponding path program 3 times [2023-08-30 01:33:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008704595] [2023-08-30 01:33:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-30 01:33:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008704595] [2023-08-30 01:33:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008704595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:06,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:33:06,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568530059] [2023-08-30 01:33:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:06,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-30 01:33:06,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:06,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-30 01:33:06,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:06,206 INFO L130 PetriNetUnfolder]: 597/1255 cut-off events. [2023-08-30 01:33:06,206 INFO L131 PetriNetUnfolder]: For 2785/2789 co-relation queries the response was YES. [2023-08-30 01:33:06,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 1255 events. 597/1255 cut-off events. For 2785/2789 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6064 event pairs, 146 based on Foata normal form. 54/1303 useless extension candidates. Maximal degree in co-relation 4380. Up to 849 conditions per place. [2023-08-30 01:33:06,213 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 61 selfloop transitions, 3 changer transitions 3/73 dead transitions. [2023-08-30 01:33:06,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 557 flow [2023-08-30 01:33:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 01:33:06,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-30 01:33:06,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 01:33:06,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 01:33:06,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:06,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 01:33:06,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,220 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 369 flow. Second operand 3 states and 420 transitions. [2023-08-30 01:33:06,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 557 flow [2023-08-30 01:33:06,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:06,229 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 322 flow [2023-08-30 01:33:06,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-30 01:33:06,230 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-30 01:33:06,230 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 322 flow [2023-08-30 01:33:06,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:06,231 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:06,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 01:33:06,231 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:06,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:06,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1982420316, now seen corresponding path program 4 times [2023-08-30 01:33:06,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:06,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392749741] [2023-08-30 01:33:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:06,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-30 01:33:06,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392749741] [2023-08-30 01:33:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392749741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500419961] [2023-08-30 01:33:06,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:33:06,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:06,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:06,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:06,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 01:33:06,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:33:06,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:06,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:06,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-30 01:33:06,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-30 01:33:06,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500419961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:06,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:33:06,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-08-30 01:33:06,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790538760] [2023-08-30 01:33:06,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:06,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 01:33:06,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 01:33:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 01:33:06,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273 [2023-08-30 01:33:06,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:06,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273 [2023-08-30 01:33:06,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:06,734 INFO L130 PetriNetUnfolder]: 487/1163 cut-off events. [2023-08-30 01:33:06,734 INFO L131 PetriNetUnfolder]: For 2543/2573 co-relation queries the response was YES. [2023-08-30 01:33:06,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3637 conditions, 1163 events. 487/1163 cut-off events. For 2543/2573 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5971 event pairs, 90 based on Foata normal form. 60/1215 useless extension candidates. Maximal degree in co-relation 3616. Up to 258 conditions per place. [2023-08-30 01:33:06,743 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 61 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2023-08-30 01:33:06,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 630 flow [2023-08-30 01:33:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:33:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:33:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 695 transitions. [2023-08-30 01:33:06,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091575091575091 [2023-08-30 01:33:06,746 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 695 transitions. [2023-08-30 01:33:06,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 695 transitions. [2023-08-30 01:33:06,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:06,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 695 transitions. [2023-08-30 01:33:06,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,751 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 322 flow. Second operand 5 states and 695 transitions. [2023-08-30 01:33:06,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 630 flow [2023-08-30 01:33:06,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 624 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:06,758 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 354 flow [2023-08-30 01:33:06,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2023-08-30 01:33:06,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-30 01:33:06,759 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 354 flow [2023-08-30 01:33:06,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:06,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:06,760 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:06,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:06,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:06,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash -344142387, now seen corresponding path program 5 times [2023-08-30 01:33:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:06,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534203959] [2023-08-30 01:33:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 01:33:07,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534203959] [2023-08-30 01:33:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534203959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:07,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081042819] [2023-08-30 01:33:07,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 01:33:07,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:07,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:07,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:07,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 01:33:07,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 01:33:07,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:07,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 01:33:07,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 01:33:07,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:07,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081042819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:07,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 01:33:07,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-08-30 01:33:07,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422911100] [2023-08-30 01:33:07,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:07,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 01:33:07,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:07,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 01:33:07,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:33:07,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 273 [2023-08-30 01:33:07,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:07,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:07,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 273 [2023-08-30 01:33:07,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:07,564 INFO L130 PetriNetUnfolder]: 677/1348 cut-off events. [2023-08-30 01:33:07,565 INFO L131 PetriNetUnfolder]: For 3860/3860 co-relation queries the response was YES. [2023-08-30 01:33:07,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4867 conditions, 1348 events. 677/1348 cut-off events. For 3860/3860 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5922 event pairs, 170 based on Foata normal form. 24/1370 useless extension candidates. Maximal degree in co-relation 4845. Up to 520 conditions per place. [2023-08-30 01:33:07,576 INFO L137 encePairwiseOnDemand]: 262/273 looper letters, 92 selfloop transitions, 20 changer transitions 0/114 dead transitions. [2023-08-30 01:33:07,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 959 flow [2023-08-30 01:33:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:33:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:33:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1037 transitions. [2023-08-30 01:33:07,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748168498168498 [2023-08-30 01:33:07,580 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1037 transitions. [2023-08-30 01:33:07,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1037 transitions. [2023-08-30 01:33:07,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:07,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1037 transitions. [2023-08-30 01:33:07,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:07,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:07,586 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:07,586 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 354 flow. Second operand 8 states and 1037 transitions. [2023-08-30 01:33:07,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 959 flow [2023-08-30 01:33:07,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 914 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:07,597 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 415 flow [2023-08-30 01:33:07,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=415, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2023-08-30 01:33:07,599 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-08-30 01:33:07,599 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 415 flow [2023-08-30 01:33:07,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:07,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:07,600 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:07,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:07,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:07,806 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:07,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1681654891, now seen corresponding path program 6 times [2023-08-30 01:33:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865344886] [2023-08-30 01:33:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-30 01:33:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:07,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865344886] [2023-08-30 01:33:07,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865344886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:07,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310186681] [2023-08-30 01:33:07,991 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 01:33:07,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:07,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:07,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:08,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 01:33:08,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 01:33:08,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:08,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 01:33:08,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-08-30 01:33:08,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:08,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310186681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:08,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 01:33:08,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 01:33:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237442893] [2023-08-30 01:33:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:33:08,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 273 [2023-08-30 01:33:08,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:08,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:08,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 273 [2023-08-30 01:33:08,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:08,602 INFO L130 PetriNetUnfolder]: 459/1066 cut-off events. [2023-08-30 01:33:08,602 INFO L131 PetriNetUnfolder]: For 3039/3067 co-relation queries the response was YES. [2023-08-30 01:33:08,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1066 events. 459/1066 cut-off events. For 3039/3067 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5073 event pairs, 281 based on Foata normal form. 0/1052 useless extension candidates. Maximal degree in co-relation 3988. Up to 780 conditions per place. [2023-08-30 01:33:08,609 INFO L137 encePairwiseOnDemand]: 271/273 looper letters, 43 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 01:33:08,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 501 flow [2023-08-30 01:33:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-08-30 01:33:08,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47374847374847373 [2023-08-30 01:33:08,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-08-30 01:33:08,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-08-30 01:33:08,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:08,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-08-30 01:33:08,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:08,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:08,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:08,614 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 415 flow. Second operand 3 states and 388 transitions. [2023-08-30 01:33:08,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 501 flow [2023-08-30 01:33:08,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 472 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 01:33:08,622 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 386 flow [2023-08-30 01:33:08,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2023-08-30 01:33:08,623 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-30 01:33:08,623 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 386 flow [2023-08-30 01:33:08,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:08,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:08,623 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:08,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:08,829 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,SelfDestructingSolverStorable13 [2023-08-30 01:33:08,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:08,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash 181541812, now seen corresponding path program 2 times [2023-08-30 01:33:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:08,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624393404] [2023-08-30 01:33:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 01:33:08,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 01:33:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 01:33:08,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 01:33:08,928 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 01:33:08,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-30 01:33:08,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 01:33:08,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 01:33:08,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 01:33:08,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 01:33:08,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 01:33:08,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 01:33:08,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 01:33:08,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-30 01:33:08,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 01:33:08,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 01:33:08,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 01:33:08,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 01:33:08,932 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:08,937 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 01:33:08,937 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 01:33:09,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:33:09 BasicIcfg [2023-08-30 01:33:09,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 01:33:09,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 01:33:09,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 01:33:09,017 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 01:33:09,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:32:55" (3/4) ... [2023-08-30 01:33:09,020 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 01:33:09,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 01:33:09,020 INFO L158 Benchmark]: Toolchain (without parser) took 15070.68ms. Allocated memory was 62.9MB in the beginning and 264.2MB in the end (delta: 201.3MB). Free memory was 38.7MB in the beginning and 60.6MB in the end (delta: -21.9MB). Peak memory consumption was 182.2MB. Max. memory is 16.1GB. [2023-08-30 01:33:09,021 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 62.9MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:33:09,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.07ms. Allocated memory was 62.9MB in the beginning and 102.8MB in the end (delta: 39.8MB). Free memory was 38.5MB in the beginning and 67.3MB in the end (delta: -28.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2023-08-30 01:33:09,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.16ms. Allocated memory is still 102.8MB. Free memory was 66.8MB in the beginning and 64.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:33:09,021 INFO L158 Benchmark]: Boogie Preprocessor took 53.34ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 63.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:33:09,022 INFO L158 Benchmark]: RCFGBuilder took 522.87ms. Allocated memory is still 102.8MB. Free memory was 63.1MB in the beginning and 45.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 01:33:09,022 INFO L158 Benchmark]: TraceAbstraction took 13852.66ms. Allocated memory was 102.8MB in the beginning and 264.2MB in the end (delta: 161.5MB). Free memory was 44.7MB in the beginning and 60.6MB in the end (delta: -15.8MB). Peak memory consumption was 145.1MB. Max. memory is 16.1GB. [2023-08-30 01:33:09,022 INFO L158 Benchmark]: Witness Printer took 3.07ms. Allocated memory is still 264.2MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:33:09,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 62.9MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.07ms. Allocated memory was 62.9MB in the beginning and 102.8MB in the end (delta: 39.8MB). Free memory was 38.5MB in the beginning and 67.3MB in the end (delta: -28.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.16ms. Allocated memory is still 102.8MB. Free memory was 66.8MB in the beginning and 64.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.34ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 63.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 522.87ms. Allocated memory is still 102.8MB. Free memory was 63.1MB in the beginning and 45.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13852.66ms. Allocated memory was 102.8MB in the beginning and 264.2MB in the end (delta: 161.5MB). Free memory was 44.7MB in the beginning and 60.6MB in the end (delta: -15.8MB). Peak memory consumption was 145.1MB. Max. memory is 16.1GB. * Witness Printer took 3.07ms. Allocated memory is still 264.2MB. Free memory is still 60.6MB. 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: 6.5s, 134 PlacesBefore, 42 PlacesAfterwards, 137 TransitionsBefore, 40 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 130 TotalNumberOfCompositions, 5425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3215, independent: 3049, independent conditional: 0, independent unconditional: 3049, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1186, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3215, independent: 1887, independent conditional: 0, independent unconditional: 1887, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1186, unknown conditional: 0, unknown unconditional: 1186] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 919. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={7:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L882] 1 num++ [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={7:0}, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, t1={6:0}, t2={7:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=2, m={3:0}, num=0, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L885] 1 i++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L916] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] - 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: -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: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 914]: 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: 913]: 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, 179 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.6s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 862 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 571 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1409 IncrementalHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 93 mSDtfsCounter, 1409 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=13, InterpolantAutomatonStates: 62, 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, 1.8s InterpolantComputationTime, 567 NumberOfCodeBlocks, 526 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 564 ConstructedInterpolants, 45 QuantifiedInterpolants, 2223 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1343 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 21 InterpolantComputations, 12 PerfectInterpolantSequences, 297/345 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 [2023-08-30 01:33:09,052 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-deagle/arithmetic_prog_bad.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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --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 [2023-08-30 01:33:10,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:33:10,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:33:10,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:33:10,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:33:10,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:33:10,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:33:10,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:33:10,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:33:10,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:33:10,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:33:10,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:33:10,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:33:10,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:33:10,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:33:10,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:33:10,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:33:10,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:33:10,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:33:11,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:33:11,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:33:11,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:33:11,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:33:11,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:33:11,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:33:11,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:33:11,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:33:11,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:33:11,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:33:11,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:33:11,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:33:11,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:33:11,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:33:11,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:33:11,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:33:11,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:33:11,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:33:11,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:33:11,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:33:11,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:33:11,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:33:11,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 01:33:11,069 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:33:11,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:33:11,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:33:11,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:33:11,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:33:11,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:33:11,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:33:11,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:33:11,072 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:33:11,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:33:11,072 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:33:11,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:33:11,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:33:11,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:33:11,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:33:11,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:33:11,073 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:33:11,073 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:33:11,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:33:11,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:33:11,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 01:33:11,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 01:33:11,074 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:33:11,074 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:33:11,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:33:11,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:33:11,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:33:11,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:33:11,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:33:11,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:33:11,076 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 01:33:11,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 01:33:11,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:33:11,076 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:33:11,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:33:11,077 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 01:33:11,078 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:33:11,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:33:11,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:33:11,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:33:11,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:33:11,373 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:33:11,374 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:33:11,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-30 01:33:12,591 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:33:12,903 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:33:12,903 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-30 01:33:12,928 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e418782d7/f972b8ad1eb74f67b9006de729ac966b/FLAG22be5d0d5 [2023-08-30 01:33:12,941 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e418782d7/f972b8ad1eb74f67b9006de729ac966b [2023-08-30 01:33:12,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:33:12,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:33:12,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:33:12,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:33:12,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:33:12,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:12" (1/1) ... [2023-08-30 01:33:12,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152625e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:12, skipping insertion in model container [2023-08-30 01:33:12,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:12" (1/1) ... [2023-08-30 01:33:12,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:33:13,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:33:13,335 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-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-30 01:33:13,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:33:13,362 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:33:13,430 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-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-30 01:33:13,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:33:13,503 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:33:13,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13 WrapperNode [2023-08-30 01:33:13,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:33:13,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:33:13,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:33:13,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:33:13,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,568 INFO L138 Inliner]: procedures = 250, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2023-08-30 01:33:13,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:33:13,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:33:13,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:33:13,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:33:13,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:33:13,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:33:13,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:33:13,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:33:13,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (1/1) ... [2023-08-30 01:33:13,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:33:13,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:13,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 01:33:13,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 01:33:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 01:33:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:33:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:33:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 01:33:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 01:33:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-08-30 01:33:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 01:33:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 01:33:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:33:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:33:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:33:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:33:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 01:33:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:33:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:33:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:33:13,694 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:33:13,891 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:33:13,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:33:14,182 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:33:14,190 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:33:14,191 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 01:33:14,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:14 BoogieIcfgContainer [2023-08-30 01:33:14,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:33:14,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:33:14,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:33:14,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:33:14,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:33:12" (1/3) ... [2023-08-30 01:33:14,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c235dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:14, skipping insertion in model container [2023-08-30 01:33:14,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:13" (2/3) ... [2023-08-30 01:33:14,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c235dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:14, skipping insertion in model container [2023-08-30 01:33:14,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:14" (3/3) ... [2023-08-30 01:33:14,200 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-08-30 01:33:14,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:33:14,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 01:33:14,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:33:14,331 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 01:33:14,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 144 transitions, 304 flow [2023-08-30 01:33:14,465 INFO L130 PetriNetUnfolder]: 10/142 cut-off events. [2023-08-30 01:33:14,466 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:33:14,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 142 events. 10/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 3 conditions per place. [2023-08-30 01:33:14,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 144 transitions, 304 flow [2023-08-30 01:33:14,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 138 transitions, 288 flow [2023-08-30 01:33:14,483 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:33:14,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 288 flow [2023-08-30 01:33:14,507 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 288 flow [2023-08-30 01:33:14,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 288 flow [2023-08-30 01:33:14,557 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2023-08-30 01:33:14,557 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:33:14,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 10/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 88. Up to 3 conditions per place. [2023-08-30 01:33:14,563 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2023-08-30 01:33:36,761 INFO L134 LiptonReduction]: Checked pairs total: 5425 [2023-08-30 01:33:36,762 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-30 01:33:36,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:33:36,779 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;@e62a6e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:33:36,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 01:33:36,781 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 01:33:36,781 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:33:36,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:36,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 01:33:36,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:36,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:36,786 INFO L85 PathProgramCache]: Analyzing trace with hash 546, now seen corresponding path program 1 times [2023-08-30 01:33:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:36,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425521344] [2023-08-30 01:33:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:36,796 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 [2023-08-30 01:33:36,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:36,802 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) [2023-08-30 01:33:36,803 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 [2023-08-30 01:33:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:36,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 01:33:36,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:36,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:36,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:36,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425521344] [2023-08-30 01:33:36,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425521344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:36,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:36,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 01:33:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102343425] [2023-08-30 01:33:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 01:33:36,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 01:33:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 01:33:36,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 275 [2023-08-30 01:33:36,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:36,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:36,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 275 [2023-08-30 01:33:36,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:37,116 INFO L130 PetriNetUnfolder]: 264/513 cut-off events. [2023-08-30 01:33:37,116 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 01:33:37,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 513 events. 264/513 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2442 event pairs, 168 based on Foata normal form. 24/383 useless extension candidates. Maximal degree in co-relation 833. Up to 409 conditions per place. [2023-08-30 01:33:37,121 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-30 01:33:37,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 142 flow [2023-08-30 01:33:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 01:33:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 01:33:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 299 transitions. [2023-08-30 01:33:37,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436363636363636 [2023-08-30 01:33:37,134 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 299 transitions. [2023-08-30 01:33:37,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 299 transitions. [2023-08-30 01:33:37,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:37,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 299 transitions. [2023-08-30 01:33:37,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.5) internal successors, (299), 2 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,146 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,148 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 2 states and 299 transitions. [2023-08-30 01:33:37,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 142 flow [2023-08-30 01:33:37,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 01:33:37,152 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow [2023-08-30 01:33:37,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-30 01:33:37,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 01:33:37,161 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow [2023-08-30 01:33:37,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:37,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:33:37,174 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 [2023-08-30 01:33:37,370 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 [2023-08-30 01:33:37,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:37,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:37,371 INFO L85 PathProgramCache]: Analyzing trace with hash 538029, now seen corresponding path program 1 times [2023-08-30 01:33:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:37,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35857956] [2023-08-30 01:33:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:37,373 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 [2023-08-30 01:33:37,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:37,385 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) [2023-08-30 01:33:37,409 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 [2023-08-30 01:33:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:37,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 01:33:37,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:37,516 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 01:33:37,517 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 [2023-08-30 01:33:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:37,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:37,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35857956] [2023-08-30 01:33:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35857956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:37,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:37,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132606136] [2023-08-30 01:33:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:37,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-08-30 01:33:37,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:37,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-08-30 01:33:37,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:37,740 INFO L130 PetriNetUnfolder]: 252/486 cut-off events. [2023-08-30 01:33:37,741 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:37,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 486 events. 252/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2283 event pairs, 160 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 878. Up to 385 conditions per place. [2023-08-30 01:33:37,744 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-30 01:33:37,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 126 flow [2023-08-30 01:33:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-08-30 01:33:37,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48848484848484847 [2023-08-30 01:33:37,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-08-30 01:33:37,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-08-30 01:33:37,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:37,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-08-30 01:33:37,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,754 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 3 states and 403 transitions. [2023-08-30 01:33:37,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 126 flow [2023-08-30 01:33:37,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:33:37,756 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow [2023-08-30 01:33:37,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-08-30 01:33:37,760 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 01:33:37,761 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow [2023-08-30 01:33:37,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:37,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:37,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:33:37,773 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 (3)] Ended with exit code 0 [2023-08-30 01:33:37,974 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 [2023-08-30 01:33:37,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:37,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash 538028, now seen corresponding path program 1 times [2023-08-30 01:33:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:37,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597051290] [2023-08-30 01:33:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:37,977 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 [2023-08-30 01:33:37,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:37,978 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) [2023-08-30 01:33:37,981 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 [2023-08-30 01:33:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:38,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:38,083 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 01:33:38,084 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 [2023-08-30 01:33:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:38,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:38,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:38,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597051290] [2023-08-30 01:33:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597051290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:38,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:38,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:38,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266113132] [2023-08-30 01:33:38,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:38,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:38,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:38,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-30 01:33:38,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:38,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-30 01:33:38,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:38,251 INFO L130 PetriNetUnfolder]: 240/459 cut-off events. [2023-08-30 01:33:38,251 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:38,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 459 events. 240/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2096 event pairs, 152 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 831. Up to 363 conditions per place. [2023-08-30 01:33:38,254 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 01:33:38,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 122 flow [2023-08-30 01:33:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-08-30 01:33:38,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006060606060606 [2023-08-30 01:33:38,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-08-30 01:33:38,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-08-30 01:33:38,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:38,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-08-30 01:33:38,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,262 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 413 transitions. [2023-08-30 01:33:38,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 122 flow [2023-08-30 01:33:38,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:38,263 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2023-08-30 01:33:38,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-30 01:33:38,264 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-08-30 01:33:38,264 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2023-08-30 01:33:38,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:38,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:33:38,282 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 [2023-08-30 01:33:38,474 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 [2023-08-30 01:33:38,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:38,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:38,475 INFO L85 PathProgramCache]: Analyzing trace with hash 517059102, now seen corresponding path program 1 times [2023-08-30 01:33:38,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:38,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733671341] [2023-08-30 01:33:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:38,476 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 [2023-08-30 01:33:38,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:38,477 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) [2023-08-30 01:33:38,480 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 [2023-08-30 01:33:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:38,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:38,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:38,598 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 01:33:38,598 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 [2023-08-30 01:33:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:38,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:38,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733671341] [2023-08-30 01:33:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733671341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117872883] [2023-08-30 01:33:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:38,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-08-30 01:33:38,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:38,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-08-30 01:33:38,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:38,795 INFO L130 PetriNetUnfolder]: 180/354 cut-off events. [2023-08-30 01:33:38,795 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:38,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 354 events. 180/354 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1532 event pairs, 112 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 641. Up to 278 conditions per place. [2023-08-30 01:33:38,797 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-30 01:33:38,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 118 flow [2023-08-30 01:33:38,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-30 01:33:38,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48363636363636364 [2023-08-30 01:33:38,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-30 01:33:38,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-30 01:33:38,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:38,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-30 01:33:38,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,804 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 399 transitions. [2023-08-30 01:33:38,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 118 flow [2023-08-30 01:33:38,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:38,805 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2023-08-30 01:33:38,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 01:33:38,806 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 01:33:38,806 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2023-08-30 01:33:38,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:38,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:38,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:33:38,820 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 [2023-08-30 01:33:39,017 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 [2023-08-30 01:33:39,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:39,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash 517059103, now seen corresponding path program 1 times [2023-08-30 01:33:39,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:39,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590237383] [2023-08-30 01:33:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:39,019 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 [2023-08-30 01:33:39,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:39,020 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) [2023-08-30 01:33:39,023 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 [2023-08-30 01:33:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:39,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:33:39,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:39,136 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 01:33:39,136 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 11 [2023-08-30 01:33:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:39,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:39,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590237383] [2023-08-30 01:33:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590237383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:39,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:39,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424423279] [2023-08-30 01:33:39,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:39,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:39,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:39,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:39,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-30 01:33:39,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:39,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-30 01:33:39,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:39,362 INFO L130 PetriNetUnfolder]: 120/249 cut-off events. [2023-08-30 01:33:39,362 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:39,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 249 events. 120/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 996 event pairs, 72 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 451. Up to 193 conditions per place. [2023-08-30 01:33:39,364 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 01:33:39,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow [2023-08-30 01:33:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-30 01:33:39,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2023-08-30 01:33:39,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-30 01:33:39,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-30 01:33:39,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:39,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-30 01:33:39,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,370 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 410 transitions. [2023-08-30 01:33:39,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow [2023-08-30 01:33:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:39,371 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow [2023-08-30 01:33:39,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-30 01:33:39,372 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-30 01:33:39,373 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow [2023-08-30 01:33:39,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:39,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:39,387 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 [2023-08-30 01:33:39,583 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 [2023-08-30 01:33:39,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:39,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1060858756, now seen corresponding path program 1 times [2023-08-30 01:33:39,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:39,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286215647] [2023-08-30 01:33:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:39,585 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 [2023-08-30 01:33:39,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:39,586 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) [2023-08-30 01:33:39,589 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 (7)] Waiting until timeout for monitored process [2023-08-30 01:33:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:39,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 01:33:39,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:39,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:39,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:39,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286215647] [2023-08-30 01:33:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286215647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:39,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829158280] [2023-08-30 01:33:39,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:39,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:39,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 275 [2023-08-30 01:33:39,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:39,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 275 [2023-08-30 01:33:39,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:39,821 INFO L130 PetriNetUnfolder]: 189/435 cut-off events. [2023-08-30 01:33:39,821 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:33:39,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 435 events. 189/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2015 event pairs, 72 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 745. Up to 195 conditions per place. [2023-08-30 01:33:39,823 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 01:33:39,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 167 flow [2023-08-30 01:33:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2023-08-30 01:33:39,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364 [2023-08-30 01:33:39,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2023-08-30 01:33:39,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2023-08-30 01:33:39,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:39,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2023-08-30 01:33:39,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,829 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 426 transitions. [2023-08-30 01:33:39,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 167 flow [2023-08-30 01:33:39,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:39,831 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow [2023-08-30 01:33:39,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 01:33:39,832 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 01:33:39,832 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow [2023-08-30 01:33:39,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:39,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:39,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:39,847 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 [2023-08-30 01:33:40,043 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 [2023-08-30 01:33:40,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:40,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:40,044 INFO L85 PathProgramCache]: Analyzing trace with hash -791743015, now seen corresponding path program 1 times [2023-08-30 01:33:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:40,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639407948] [2023-08-30 01:33:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:40,044 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 [2023-08-30 01:33:40,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:40,046 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) [2023-08-30 01:33:40,048 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 [2023-08-30 01:33:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:40,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 01:33:40,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:40,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:40,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:40,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639407948] [2023-08-30 01:33:40,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639407948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:40,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:40,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:40,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618094533] [2023-08-30 01:33:40,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:40,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:40,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:40,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 275 [2023-08-30 01:33:40,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:40,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:40,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 275 [2023-08-30 01:33:40,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:40,312 INFO L130 PetriNetUnfolder]: 297/642 cut-off events. [2023-08-30 01:33:40,313 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 01:33:40,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 642 events. 297/642 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3088 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 1202. Up to 300 conditions per place. [2023-08-30 01:33:40,316 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 35 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-30 01:33:40,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 191 flow [2023-08-30 01:33:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2023-08-30 01:33:40,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364 [2023-08-30 01:33:40,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2023-08-30 01:33:40,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2023-08-30 01:33:40,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:40,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2023-08-30 01:33:40,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:40,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:40,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:40,323 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 426 transitions. [2023-08-30 01:33:40,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 191 flow [2023-08-30 01:33:40,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:40,325 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2023-08-30 01:33:40,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-08-30 01:33:40,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-08-30 01:33:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow [2023-08-30 01:33:40,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:40,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:40,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:40,338 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 [2023-08-30 01:33:40,538 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 [2023-08-30 01:33:40,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:40,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:40,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1472421019, now seen corresponding path program 1 times [2023-08-30 01:33:40,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:40,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724901169] [2023-08-30 01:33:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:40,540 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 [2023-08-30 01:33:40,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:40,540 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) [2023-08-30 01:33:40,541 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 [2023-08-30 01:33:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:40,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 01:33:40,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:40,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:40,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:40,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724901169] [2023-08-30 01:33:40,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724901169] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:40,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:33:40,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 01:33:40,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689172858] [2023-08-30 01:33:40,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:40,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 01:33:40,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:40,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 01:33:40,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 01:33:40,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-30 01:33:40,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:40,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:40,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-30 01:33:40,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:41,029 INFO L130 PetriNetUnfolder]: 435/973 cut-off events. [2023-08-30 01:33:41,029 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2023-08-30 01:33:41,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 973 events. 435/973 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4753 event pairs, 69 based on Foata normal form. 36/938 useless extension candidates. Maximal degree in co-relation 1877. Up to 180 conditions per place. [2023-08-30 01:33:41,035 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 57 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-08-30 01:33:41,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 323 flow [2023-08-30 01:33:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:33:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:33:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2023-08-30 01:33:41,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127272727272727 [2023-08-30 01:33:41,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2023-08-30 01:33:41,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2023-08-30 01:33:41,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:41,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2023-08-30 01:33:41,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,043 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 5 states and 705 transitions. [2023-08-30 01:33:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 323 flow [2023-08-30 01:33:41,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:41,045 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 116 flow [2023-08-30 01:33:41,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-30 01:33:41,046 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 01:33:41,046 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 116 flow [2023-08-30 01:33:41,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:41,047 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:41,073 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 [2023-08-30 01:33:41,256 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 [2023-08-30 01:33:41,257 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:41,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:41,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1197724531, now seen corresponding path program 1 times [2023-08-30 01:33:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:41,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030198270] [2023-08-30 01:33:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:41,258 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 [2023-08-30 01:33:41,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:41,259 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) [2023-08-30 01:33:41,262 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 [2023-08-30 01:33:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:41,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:41,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 01:33:41,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 01:33:41,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030198270] [2023-08-30 01:33:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030198270] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:41,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:33:41,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-08-30 01:33:41,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541151974] [2023-08-30 01:33:41,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:41,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:33:41,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:41,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:33:41,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:33:41,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 275 [2023-08-30 01:33:41,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:41,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 275 [2023-08-30 01:33:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:41,902 INFO L130 PetriNetUnfolder]: 920/1616 cut-off events. [2023-08-30 01:33:41,902 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 01:33:41,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 1616 events. 920/1616 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6959 event pairs, 213 based on Foata normal form. 0/1543 useless extension candidates. Maximal degree in co-relation 3709. Up to 659 conditions per place. [2023-08-30 01:33:41,910 INFO L137 encePairwiseOnDemand]: 266/275 looper letters, 87 selfloop transitions, 13 changer transitions 4/107 dead transitions. [2023-08-30 01:33:41,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 549 flow [2023-08-30 01:33:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:33:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:33:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1092 transitions. [2023-08-30 01:33:41,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49636363636363634 [2023-08-30 01:33:41,914 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1092 transitions. [2023-08-30 01:33:41,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1092 transitions. [2023-08-30 01:33:41,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:41,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1092 transitions. [2023-08-30 01:33:41,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.5) internal successors, (1092), 8 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,922 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,922 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 116 flow. Second operand 8 states and 1092 transitions. [2023-08-30 01:33:41,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 107 transitions, 549 flow [2023-08-30 01:33:41,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 107 transitions, 533 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:41,929 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 224 flow [2023-08-30 01:33:41,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-08-30 01:33:41,930 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-30 01:33:41,930 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 224 flow [2023-08-30 01:33:41,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:41,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:41,931 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:41,943 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 [2023-08-30 01:33:42,143 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 [2023-08-30 01:33:42,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:42,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash 373370299, now seen corresponding path program 2 times [2023-08-30 01:33:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060999937] [2023-08-30 01:33:42,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:33:42,145 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 [2023-08-30 01:33:42,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:42,146 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) [2023-08-30 01:33:42,154 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 [2023-08-30 01:33:42,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:33:42,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:42,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:42,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:42,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 01:33:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 01:33:42,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:42,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:42,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060999937] [2023-08-30 01:33:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060999937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:42,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61038407] [2023-08-30 01:33:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:42,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:42,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 275 [2023-08-30 01:33:42,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:42,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:42,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 275 [2023-08-30 01:33:42,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:42,499 INFO L130 PetriNetUnfolder]: 339/787 cut-off events. [2023-08-30 01:33:42,499 INFO L131 PetriNetUnfolder]: For 773/773 co-relation queries the response was YES. [2023-08-30 01:33:42,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 787 events. 339/787 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3528 event pairs, 99 based on Foata normal form. 82/868 useless extension candidates. Maximal degree in co-relation 2182. Up to 326 conditions per place. [2023-08-30 01:33:42,504 INFO L137 encePairwiseOnDemand]: 267/275 looper letters, 30 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2023-08-30 01:33:42,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 320 flow [2023-08-30 01:33:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-30 01:33:42,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2023-08-30 01:33:42,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-30 01:33:42,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-30 01:33:42,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:42,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-30 01:33:42,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:42,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:42,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:42,509 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 224 flow. Second operand 3 states and 410 transitions. [2023-08-30 01:33:42,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 320 flow [2023-08-30 01:33:42,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 310 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 01:33:42,513 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 198 flow [2023-08-30 01:33:42,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2023-08-30 01:33:42,514 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-30 01:33:42,514 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 198 flow [2023-08-30 01:33:42,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:42,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:42,514 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:42,529 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 (11)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:42,725 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 [2023-08-30 01:33:42,725 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:42,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:42,726 INFO L85 PathProgramCache]: Analyzing trace with hash 918995859, now seen corresponding path program 2 times [2023-08-30 01:33:42,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:42,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101012983] [2023-08-30 01:33:42,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:33:42,726 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 [2023-08-30 01:33:42,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:42,727 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) [2023-08-30 01:33:42,728 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 [2023-08-30 01:33:42,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 01:33:42,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:42,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 01:33:42,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 01:33:43,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:43,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101012983] [2023-08-30 01:33:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101012983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:43,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:43,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157416939] [2023-08-30 01:33:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:43,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:43,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:43,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:43,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 275 [2023-08-30 01:33:43,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:43,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:43,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 275 [2023-08-30 01:33:43,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:43,469 INFO L130 PetriNetUnfolder]: 282/670 cut-off events. [2023-08-30 01:33:43,469 INFO L131 PetriNetUnfolder]: For 563/573 co-relation queries the response was YES. [2023-08-30 01:33:43,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1980 conditions, 670 events. 282/670 cut-off events. For 563/573 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2904 event pairs, 196 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 1967. Up to 487 conditions per place. [2023-08-30 01:33:43,474 INFO L137 encePairwiseOnDemand]: 273/275 looper letters, 25 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 01:33:43,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 248 flow [2023-08-30 01:33:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 01:33:43,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47393939393939394 [2023-08-30 01:33:43,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 01:33:43,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 01:33:43,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:43,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 01:33:43,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:43,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:43,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:43,478 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 198 flow. Second operand 3 states and 391 transitions. [2023-08-30 01:33:43,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 248 flow [2023-08-30 01:33:43,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:43,481 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 187 flow [2023-08-30 01:33:43,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-30 01:33:43,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-30 01:33:43,482 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 187 flow [2023-08-30 01:33:43,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:43,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:43,482 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:43,495 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 [2023-08-30 01:33:43,692 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 [2023-08-30 01:33:43,692 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:43,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1316237347, now seen corresponding path program 3 times [2023-08-30 01:33:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:43,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779768264] [2023-08-30 01:33:43,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 01:33:43,693 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 [2023-08-30 01:33:43,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:43,694 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) [2023-08-30 01:33:43,697 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 [2023-08-30 01:33:43,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 01:33:43,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:43,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 01:33:43,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 01:33:43,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 01:33:43,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779768264] [2023-08-30 01:33:43,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779768264] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:43,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:33:43,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 01:33:43,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380328217] [2023-08-30 01:33:43,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:43,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:33:43,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:33:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:33:44,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 275 [2023-08-30 01:33:44,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 187 flow. Second operand has 10 states, 10 states have (on average 127.1) internal successors, (1271), 10 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:44,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:44,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 275 [2023-08-30 01:33:44,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:44,439 INFO L130 PetriNetUnfolder]: 447/896 cut-off events. [2023-08-30 01:33:44,440 INFO L131 PetriNetUnfolder]: For 776/776 co-relation queries the response was YES. [2023-08-30 01:33:44,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 896 events. 447/896 cut-off events. For 776/776 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3311 event pairs, 130 based on Foata normal form. 44/940 useless extension candidates. Maximal degree in co-relation 2630. Up to 349 conditions per place. [2023-08-30 01:33:44,445 INFO L137 encePairwiseOnDemand]: 264/275 looper letters, 68 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2023-08-30 01:33:44,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 517 flow [2023-08-30 01:33:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:33:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:33:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1043 transitions. [2023-08-30 01:33:44,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740909090909091 [2023-08-30 01:33:44,448 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1043 transitions. [2023-08-30 01:33:44,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1043 transitions. [2023-08-30 01:33:44,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:44,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1043 transitions. [2023-08-30 01:33:44,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:44,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:44,457 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:44,457 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 187 flow. Second operand 8 states and 1043 transitions. [2023-08-30 01:33:44,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 517 flow [2023-08-30 01:33:44,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:44,461 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 228 flow [2023-08-30 01:33:44,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-08-30 01:33:44,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-30 01:33:44,463 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 228 flow [2023-08-30 01:33:44,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.1) internal successors, (1271), 10 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:44,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:44,464 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:44,476 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 (13)] Ended with exit code 0 [2023-08-30 01:33:44,674 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 [2023-08-30 01:33:44,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:44,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash -84794677, now seen corresponding path program 4 times [2023-08-30 01:33:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410462823] [2023-08-30 01:33:44,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:33:44,675 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 [2023-08-30 01:33:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:44,677 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) [2023-08-30 01:33:44,679 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 [2023-08-30 01:33:44,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:33:44,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:44,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:44,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:44,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:44,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:44,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410462823] [2023-08-30 01:33:44,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410462823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:44,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:33:44,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-08-30 01:33:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170561705] [2023-08-30 01:33:44,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:44,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:33:44,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:33:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:33:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:33:44,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-30 01:33:44,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:44,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:44,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-30 01:33:44,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:45,267 INFO L130 PetriNetUnfolder]: 370/926 cut-off events. [2023-08-30 01:33:45,267 INFO L131 PetriNetUnfolder]: For 1062/1064 co-relation queries the response was YES. [2023-08-30 01:33:45,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2883 conditions, 926 events. 370/926 cut-off events. For 1062/1064 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3866 event pairs, 93 based on Foata normal form. 38/960 useless extension candidates. Maximal degree in co-relation 2867. Up to 157 conditions per place. [2023-08-30 01:33:45,290 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 62 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-08-30 01:33:45,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 579 flow [2023-08-30 01:33:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 01:33:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 01:33:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions. [2023-08-30 01:33:45,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2023-08-30 01:33:45,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions. [2023-08-30 01:33:45,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions. [2023-08-30 01:33:45,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:45,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions. [2023-08-30 01:33:45,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:45,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:45,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:45,298 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 228 flow. Second operand 6 states and 836 transitions. [2023-08-30 01:33:45,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 579 flow [2023-08-30 01:33:45,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 537 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 01:33:45,301 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 243 flow [2023-08-30 01:33:45,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2023-08-30 01:33:45,302 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-30 01:33:45,302 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 243 flow [2023-08-30 01:33:45,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:45,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:45,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:45,317 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 (14)] Ended with exit code 0 [2023-08-30 01:33:45,514 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 [2023-08-30 01:33:45,515 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:45,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -202895433, now seen corresponding path program 5 times [2023-08-30 01:33:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:33:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348719078] [2023-08-30 01:33:45,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 01:33:45,516 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 [2023-08-30 01:33:45,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:33:45,517 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) [2023-08-30 01:33:45,517 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 [2023-08-30 01:33:45,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 01:33:45,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-08-30 01:33:45,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 01:33:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 01:33:45,828 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 01:33:45,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 01:33:45,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-30 01:33:45,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 01:33:45,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 01:33:45,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 01:33:45,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 01:33:45,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 01:33:45,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 01:33:45,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 01:33:45,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-30 01:33:45,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 01:33:45,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 01:33:45,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 01:33:45,852 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 [2023-08-30 01:33:46,048 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 [2023-08-30 01:33:46,049 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:46,052 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 01:33:46,053 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 01:33:46,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:33:46 BasicIcfg [2023-08-30 01:33:46,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 01:33:46,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 01:33:46,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 01:33:46,120 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 01:33:46,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:14" (3/4) ... [2023-08-30 01:33:46,123 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 01:33:46,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 01:33:46,123 INFO L158 Benchmark]: Toolchain (without parser) took 33178.82ms. Allocated memory was 77.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Free memory was 54.3MB in the beginning and 34.1MB in the end (delta: 20.2MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2023-08-30 01:33:46,123 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:33:46,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.50ms. Allocated memory is still 77.6MB. Free memory was 54.0MB in the beginning and 45.5MB in the end (delta: 8.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2023-08-30 01:33:46,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.54ms. Allocated memory is still 77.6MB. Free memory was 45.5MB in the beginning and 43.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 01:33:46,124 INFO L158 Benchmark]: Boogie Preprocessor took 39.36ms. Allocated memory is still 77.6MB. Free memory was 43.0MB in the beginning and 41.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:33:46,124 INFO L158 Benchmark]: RCFGBuilder took 584.43ms. Allocated memory is still 77.6MB. Free memory was 41.0MB in the beginning and 45.4MB in the end (delta: -4.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 01:33:46,125 INFO L158 Benchmark]: TraceAbstraction took 31924.62ms. Allocated memory was 77.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Free memory was 45.0MB in the beginning and 34.5MB in the end (delta: 10.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2023-08-30 01:33:46,125 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 98.6MB. Free memory was 34.5MB in the beginning and 34.1MB in the end (delta: 362.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:33:46,126 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 58.7MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.50ms. Allocated memory is still 77.6MB. Free memory was 54.0MB in the beginning and 45.5MB in the end (delta: 8.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.54ms. Allocated memory is still 77.6MB. Free memory was 45.5MB in the beginning and 43.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.36ms. Allocated memory is still 77.6MB. Free memory was 43.0MB in the beginning and 41.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 584.43ms. Allocated memory is still 77.6MB. Free memory was 41.0MB in the beginning and 45.4MB in the end (delta: -4.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 31924.62ms. Allocated memory was 77.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Free memory was 45.0MB in the beginning and 34.5MB in the end (delta: 10.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 98.6MB. Free memory was 34.5MB in the beginning and 34.1MB in the end (delta: 362.7kB). 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: 22.3s, 135 PlacesBefore, 42 PlacesAfterwards, 138 TransitionsBefore, 40 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 131 TotalNumberOfCompositions, 5425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3243, independent: 3077, independent conditional: 0, independent unconditional: 3077, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1187, independent: 1163, independent conditional: 0, independent unconditional: 1163, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3243, independent: 1914, independent conditional: 0, independent unconditional: 1914, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1187, unknown conditional: 0, unknown unconditional: 1187] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 919. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={15:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={15:0}, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L882] 1 num++ [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, t1={7:0}, t2={15:0}, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num--=1, num=0, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num--=1, num=0, t1={7:0}, t2={15:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num--=1, num=0, t1={7:0}, t2={15:0}, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={15:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={15:0}, total=6] - 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: -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: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 914]: 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: 913]: 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, 180 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.7s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 22.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 555 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1449 IncrementalHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 74 mSDtfsCounter, 1449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=13, InterpolantAutomatonStates: 53, 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, 0.6s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 304 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 378 ConstructedInterpolants, 35 QuantifiedInterpolants, 1719 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1711 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 149/193 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 [2023-08-30 01:33:46,148 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