./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:23:05,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:23:05,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:23:05,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:23:05,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:23:05,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:23:05,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:23:05,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:23:05,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:23:05,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:23:05,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:23:05,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:23:05,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:23:05,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:23:05,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:23:05,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:23:05,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:23:05,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:23:05,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:23:05,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:23:05,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:23:05,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:23:05,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:23:05,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:23:05,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:23:05,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:23:05,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:23:05,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:23:05,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:23:05,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:23:05,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:23:05,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:23:05,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:23:05,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:23:05,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:23:05,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:23:05,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:23:05,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:23:05,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:23:05,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:23:05,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:23:05,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:23:05,145 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:23:05,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:23:05,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:23:05,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:23:05,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:23:05,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:23:05,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:23:05,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:23:05,148 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:23:05,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:23:05,149 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:23:05,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:23:05,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:23:05,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:23:05,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:23:05,150 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:23:05,150 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:23:05,151 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:23:05,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:23:05,151 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:23:05,151 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:23:05,152 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:23:05,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:23:05,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:23:05,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:23:05,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:23:05,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:23:05,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:23:05,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:23:05,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:23:05,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:23:05,154 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:23:05,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:23:05,155 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:23:05,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:23:05,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:23:05,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:23:05,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:23:05,518 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:23:05,518 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:23:05,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-30 02:23:06,822 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:23:07,063 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:23:07,063 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-30 02:23:07,083 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c99902d/4346c381b7904bbfa63a61c528721a7d/FLAG9382b664e [2023-08-30 02:23:07,100 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c99902d/4346c381b7904bbfa63a61c528721a7d [2023-08-30 02:23:07,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:23:07,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:23:07,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:23:07,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:23:07,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:23:07,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fdb73ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07, skipping insertion in model container [2023-08-30 02:23:07,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:23:07,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:23:07,484 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-08-30 02:23:07,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:23:07,497 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:23:07,543 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-08-30 02:23:07,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:23:07,589 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:23:07,589 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:23:07,595 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:23:07,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07 WrapperNode [2023-08-30 02:23:07,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:23:07,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:23:07,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:23:07,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:23:07,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,651 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-30 02:23:07,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:23:07,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:23:07,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:23:07,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:23:07,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:23:07,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:23:07,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:23:07,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:23:07,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (1/1) ... [2023-08-30 02:23:07,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:23:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:07,719 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 02:23:07,736 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 02:23:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 02:23:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 02:23:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 02:23:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 02:23:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:23:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 02:23:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:23:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:23:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:23:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:23:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 02:23:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:23:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:23:07,758 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 02:23:07,856 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:23:07,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:23:08,037 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:23:08,042 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:23:08,042 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 02:23:08,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:23:08 BoogieIcfgContainer [2023-08-30 02:23:08,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:23:08,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:23:08,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:23:08,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:23:08,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:23:07" (1/3) ... [2023-08-30 02:23:08,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c26357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:23:08, skipping insertion in model container [2023-08-30 02:23:08,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:07" (2/3) ... [2023-08-30 02:23:08,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c26357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:23:08, skipping insertion in model container [2023-08-30 02:23:08,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:23:08" (3/3) ... [2023-08-30 02:23:08,051 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-08-30 02:23:08,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:23:08,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 02:23:08,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:23:08,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:23:08,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 158 flow [2023-08-30 02:23:08,263 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-30 02:23:08,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:23:08,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:23:08,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 158 flow [2023-08-30 02:23:08,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 150 flow [2023-08-30 02:23:08,279 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:23:08,291 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-30 02:23:08,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-30 02:23:08,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 150 flow [2023-08-30 02:23:08,331 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-30 02:23:08,332 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:23:08,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:23:08,334 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-30 02:23:10,625 INFO L134 LiptonReduction]: Checked pairs total: 1104 [2023-08-30 02:23:10,626 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-30 02:23:10,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:23:10,642 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;@14707dd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:23:10,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 02:23:10,643 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:23:10,644 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:23:10,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:10,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:23:10,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:10,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash 294, now seen corresponding path program 1 times [2023-08-30 02:23:10,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:10,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215023572] [2023-08-30 02:23:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:10,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:10,737 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 02:23:10,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:10,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215023572] [2023-08-30 02:23:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215023572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:10,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:10,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:23:10,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572378101] [2023-08-30 02:23:10,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:10,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:23:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:23:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:23:10,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2023-08-30 02:23:10,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:10,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2023-08-30 02:23:10,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:10,877 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-30 02:23:10,877 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:23:10,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-30 02:23:10,880 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-30 02:23:10,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-30 02:23:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:23:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:23:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2023-08-30 02:23:10,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-30 02:23:10,894 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2023-08-30 02:23:10,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2023-08-30 02:23:10,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:10,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2023-08-30 02:23:10,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,909 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,910 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 156 transitions. [2023-08-30 02:23:10,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-30 02:23:10,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:23:10,914 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-30 02:23:10,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-30 02:23:10,919 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:23:10,919 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-30 02:23:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:10,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:23:10,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:23:10,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:10,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:10,929 INFO L85 PathProgramCache]: Analyzing trace with hash 286821, now seen corresponding path program 1 times [2023-08-30 02:23:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:10,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812757108] [2023-08-30 02:23:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:11,103 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 02:23:11,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812757108] [2023-08-30 02:23:11,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812757108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:11,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:11,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:23:11,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693929050] [2023-08-30 02:23:11,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:11,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:23:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:23:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:23:11,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-08-30 02:23:11,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:11,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-08-30 02:23:11,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:11,162 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-30 02:23:11,163 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:23:11,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 348 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2023-08-30 02:23:11,164 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-30 02:23:11,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-30 02:23:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:23:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:23:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-30 02:23:11,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-30 02:23:11,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-30 02:23:11,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-30 02:23:11,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:11,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-30 02:23:11,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,170 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 214 transitions. [2023-08-30 02:23:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-30 02:23:11,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:23:11,171 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-30 02:23:11,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 02:23:11,172 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:23:11,172 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-30 02:23:11,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:11,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:23:11,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:23:11,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:11,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash 286820, now seen corresponding path program 1 times [2023-08-30 02:23:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:11,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994385577] [2023-08-30 02:23:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:11,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:11,306 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 02:23:11,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994385577] [2023-08-30 02:23:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994385577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:11,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:11,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:23:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962914467] [2023-08-30 02:23:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:23:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:11,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:23:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:23:11,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:11,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:11,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:11,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:11,370 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-30 02:23:11,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:23:11,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 325 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-30 02:23:11,372 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-30 02:23:11,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-30 02:23:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:23:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:23:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-30 02:23:11,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-30 02:23:11,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-30 02:23:11,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-30 02:23:11,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:11,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-30 02:23:11,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,378 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 204 transitions. [2023-08-30 02:23:11,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-30 02:23:11,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:23:11,379 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-30 02:23:11,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 02:23:11,380 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-30 02:23:11,380 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-30 02:23:11,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:11,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:23:11,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:23:11,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:11,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash -45115990, now seen corresponding path program 1 times [2023-08-30 02:23:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:11,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123934080] [2023-08-30 02:23:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:11,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:11,499 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 02:23:11,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123934080] [2023-08-30 02:23:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123934080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:11,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:11,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:23:11,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511561074] [2023-08-30 02:23:11,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:11,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:23:11,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:23:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:23:11,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:23:11,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:11,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:23:11,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:11,629 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2023-08-30 02:23:11,629 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 02:23:11,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 876 event pairs, 12 based on Foata normal form. 15/223 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-08-30 02:23:11,631 INFO L137 encePairwiseOnDemand]: 138/144 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-08-30 02:23:11,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-08-30 02:23:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:23:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:23:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2023-08-30 02:23:11,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-30 02:23:11,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 351 transitions. [2023-08-30 02:23:11,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 351 transitions. [2023-08-30 02:23:11,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:11,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 351 transitions. [2023-08-30 02:23:11,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,639 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 351 transitions. [2023-08-30 02:23:11,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-08-30 02:23:11,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:23:11,641 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-08-30 02:23:11,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-08-30 02:23:11,642 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-08-30 02:23:11,642 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-08-30 02:23:11,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:11,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:11,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:23:11,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:11,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1398595235, now seen corresponding path program 1 times [2023-08-30 02:23:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:11,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105390831] [2023-08-30 02:23:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:11,888 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 02:23:11,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:11,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105390831] [2023-08-30 02:23:11,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105390831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:11,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:11,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:23:11,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465005871] [2023-08-30 02:23:11,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:11,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:23:11,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:11,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:23:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:23:11,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 144 [2023-08-30 02:23:11,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:11,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 144 [2023-08-30 02:23:11,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:12,000 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2023-08-30 02:23:12,001 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 02:23:12,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 613 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-08-30 02:23:12,005 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-08-30 02:23:12,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-08-30 02:23:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:23:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:23:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2023-08-30 02:23:12,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 02:23:12,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2023-08-30 02:23:12,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2023-08-30 02:23:12,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:12,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2023-08-30 02:23:12,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,014 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 256 transitions. [2023-08-30 02:23:12,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-08-30 02:23:12,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:23:12,017 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-08-30 02:23:12,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-30 02:23:12,020 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-30 02:23:12,020 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-08-30 02:23:12,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:12,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:12,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:23:12,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:12,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1179996120, now seen corresponding path program 1 times [2023-08-30 02:23:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:12,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970844147] [2023-08-30 02:23:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:12,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:12,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970844147] [2023-08-30 02:23:12,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970844147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:12,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:12,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:23:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991868194] [2023-08-30 02:23:12,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:12,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:23:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:12,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:23:12,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:23:12,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:12,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:12,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:12,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:12,266 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2023-08-30 02:23:12,266 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-30 02:23:12,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 433 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-08-30 02:23:12,267 INFO L137 encePairwiseOnDemand]: 140/144 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-30 02:23:12,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-08-30 02:23:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:23:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:23:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-08-30 02:23:12,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670138888888889 [2023-08-30 02:23:12,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-08-30 02:23:12,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-08-30 02:23:12,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:12,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-08-30 02:23:12,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 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 02:23:12,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,272 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 269 transitions. [2023-08-30 02:23:12,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-08-30 02:23:12,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:23:12,274 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-08-30 02:23:12,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-30 02:23:12,275 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-08-30 02:23:12,275 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-08-30 02:23:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:12,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:23:12,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:12,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash -407213147, now seen corresponding path program 1 times [2023-08-30 02:23:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:12,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666321241] [2023-08-30 02:23:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:12,350 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 02:23:12,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:12,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666321241] [2023-08-30 02:23:12,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666321241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:12,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:12,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:23:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082275807] [2023-08-30 02:23:12,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:12,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:23:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:23:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:23:12,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:12,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:12,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:12,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:12,455 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2023-08-30 02:23:12,455 INFO L131 PetriNetUnfolder]: For 288/288 co-relation queries the response was YES. [2023-08-30 02:23:12,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 720 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-08-30 02:23:12,458 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-30 02:23:12,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-08-30 02:23:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 02:23:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 02:23:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 404 transitions. [2023-08-30 02:23:12,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2023-08-30 02:23:12,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 404 transitions. [2023-08-30 02:23:12,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 404 transitions. [2023-08-30 02:23:12,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:12,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 404 transitions. [2023-08-30 02:23:12,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,465 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 404 transitions. [2023-08-30 02:23:12,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-08-30 02:23:12,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 02:23:12,471 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-08-30 02:23:12,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-30 02:23:12,472 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-30 02:23:12,472 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-08-30 02:23:12,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:12,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:23:12,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:12,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash -407195477, now seen corresponding path program 2 times [2023-08-30 02:23:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:12,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681307749] [2023-08-30 02:23:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:12,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:12,578 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 02:23:12,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681307749] [2023-08-30 02:23:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681307749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:12,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:12,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:23:12,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040880396] [2023-08-30 02:23:12,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:12,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:23:12,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:12,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:23:12,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:23:12,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:12,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:12,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:12,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:12,691 INFO L130 PetriNetUnfolder]: 132/231 cut-off events. [2023-08-30 02:23:12,691 INFO L131 PetriNetUnfolder]: For 531/531 co-relation queries the response was YES. [2023-08-30 02:23:12,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 231 events. 132/231 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 761 event pairs, 31 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 879. Up to 99 conditions per place. [2023-08-30 02:23:12,693 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 15 changer transitions 8/53 dead transitions. [2023-08-30 02:23:12,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 423 flow [2023-08-30 02:23:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:23:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:23:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 469 transitions. [2023-08-30 02:23:12,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2023-08-30 02:23:12,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 469 transitions. [2023-08-30 02:23:12,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 469 transitions. [2023-08-30 02:23:12,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:12,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 469 transitions. [2023-08-30 02:23:12,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,698 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 7 states and 469 transitions. [2023-08-30 02:23:12,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 423 flow [2023-08-30 02:23:12,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 399 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-30 02:23:12,701 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 278 flow [2023-08-30 02:23:12,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-30 02:23:12,702 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2023-08-30 02:23:12,702 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 278 flow [2023-08-30 02:23:12,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:12,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:23:12,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:12,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1802518163, now seen corresponding path program 1 times [2023-08-30 02:23:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081604717] [2023-08-30 02:23:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:12,811 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 02:23:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081604717] [2023-08-30 02:23:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081604717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:23:12,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488326031] [2023-08-30 02:23:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:12,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:23:12,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:23:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:23:12,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:12,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:12,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:12,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:12,943 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2023-08-30 02:23:12,943 INFO L131 PetriNetUnfolder]: For 1123/1123 co-relation queries the response was YES. [2023-08-30 02:23:12,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 295 events. 168/295 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 16 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1234. Up to 79 conditions per place. [2023-08-30 02:23:12,946 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 37 selfloop transitions, 22 changer transitions 3/62 dead transitions. [2023-08-30 02:23:12,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 556 flow [2023-08-30 02:23:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 02:23:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 02:23:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 534 transitions. [2023-08-30 02:23:12,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-08-30 02:23:12,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 534 transitions. [2023-08-30 02:23:12,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 534 transitions. [2023-08-30 02:23:12,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:12,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 534 transitions. [2023-08-30 02:23:12,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,953 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,953 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 278 flow. Second operand 8 states and 534 transitions. [2023-08-30 02:23:12,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 556 flow [2023-08-30 02:23:12,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 524 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 02:23:12,960 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 390 flow [2023-08-30 02:23:12,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-08-30 02:23:12,961 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-08-30 02:23:12,961 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 390 flow [2023-08-30 02:23:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:12,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:12,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 02:23:12,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:12,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash -105307223, now seen corresponding path program 2 times [2023-08-30 02:23:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:12,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088170430] [2023-08-30 02:23:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:13,066 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 02:23:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088170430] [2023-08-30 02:23:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088170430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:23:13,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:23:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:23:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488555052] [2023-08-30 02:23:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:23:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:23:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:13,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:23:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:23:13,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:13,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:13,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:13,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:13,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:13,218 INFO L130 PetriNetUnfolder]: 160/283 cut-off events. [2023-08-30 02:23:13,218 INFO L131 PetriNetUnfolder]: For 1708/1708 co-relation queries the response was YES. [2023-08-30 02:23:13,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 283 events. 160/283 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 988 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1348. Up to 69 conditions per place. [2023-08-30 02:23:13,221 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2023-08-30 02:23:13,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 634 flow [2023-08-30 02:23:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:23:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:23:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 467 transitions. [2023-08-30 02:23:13,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632936507936508 [2023-08-30 02:23:13,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 467 transitions. [2023-08-30 02:23:13,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 467 transitions. [2023-08-30 02:23:13,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:13,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 467 transitions. [2023-08-30 02:23:13,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:13,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:13,227 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:13,228 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 390 flow. Second operand 7 states and 467 transitions. [2023-08-30 02:23:13,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 634 flow [2023-08-30 02:23:13,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 580 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-30 02:23:13,236 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 430 flow [2023-08-30 02:23:13,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-08-30 02:23:13,238 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-30 02:23:13,238 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 430 flow [2023-08-30 02:23:13,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:13,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:13,240 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 02:23:13,241 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:13,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1030467307, now seen corresponding path program 3 times [2023-08-30 02:23:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905682164] [2023-08-30 02:23:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:13,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:13,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905682164] [2023-08-30 02:23:13,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905682164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:13,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777415079] [2023-08-30 02:23:13,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:23:13,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:13,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:13,361 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 02:23:13,373 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 02:23:13,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 02:23:13,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:13,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 02:23:13,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:13,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777415079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:13,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:13,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 02:23:13,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602312950] [2023-08-30 02:23:13,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:13,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:23:13,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:13,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:23:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:23:13,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:13,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:13,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:13,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:13,983 INFO L130 PetriNetUnfolder]: 208/363 cut-off events. [2023-08-30 02:23:13,983 INFO L131 PetriNetUnfolder]: For 2839/2839 co-relation queries the response was YES. [2023-08-30 02:23:13,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 363 events. 208/363 cut-off events. For 2839/2839 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1261 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1850. Up to 91 conditions per place. [2023-08-30 02:23:13,986 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-08-30 02:23:13,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 1040 flow [2023-08-30 02:23:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 02:23:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 02:23:13,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 928 transitions. [2023-08-30 02:23:13,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-08-30 02:23:13,990 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 928 transitions. [2023-08-30 02:23:13,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 928 transitions. [2023-08-30 02:23:13,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:13,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 928 transitions. [2023-08-30 02:23:13,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 66.28571428571429) internal successors, (928), 14 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:14,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 144.0) internal successors, (2160), 15 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:14,007 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 144.0) internal successors, (2160), 15 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:14,008 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 430 flow. Second operand 14 states and 928 transitions. [2023-08-30 02:23:14,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 1040 flow [2023-08-30 02:23:14,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 973 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-30 02:23:14,019 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 749 flow [2023-08-30 02:23:14,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=749, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-08-30 02:23:14,019 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-08-30 02:23:14,019 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 749 flow [2023-08-30 02:23:14,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:14,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:14,020 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:14,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 02:23:14,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 02:23:14,226 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:14,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash 771926841, now seen corresponding path program 4 times [2023-08-30 02:23:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:14,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198019830] [2023-08-30 02:23:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:14,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:14,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198019830] [2023-08-30 02:23:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198019830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:14,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816309786] [2023-08-30 02:23:14,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:23:14,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:14,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:14,399 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 02:23:14,428 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 02:23:14,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:23:14,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:14,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 02:23:14,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:14,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:14,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816309786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:14,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 02:23:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030999717] [2023-08-30 02:23:14,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 02:23:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:14,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 02:23:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-30 02:23:14,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:14,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 749 flow. Second operand has 16 states, 16 states have (on average 62.75) internal successors, (1004), 16 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:14,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:14,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:14,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:15,032 INFO L130 PetriNetUnfolder]: 264/475 cut-off events. [2023-08-30 02:23:15,032 INFO L131 PetriNetUnfolder]: For 5411/5411 co-relation queries the response was YES. [2023-08-30 02:23:15,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 475 events. 264/475 cut-off events. For 5411/5411 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1703 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2676. Up to 249 conditions per place. [2023-08-30 02:23:15,036 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-08-30 02:23:15,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1567 flow [2023-08-30 02:23:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 02:23:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 02:23:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1059 transitions. [2023-08-30 02:23:15,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596354166666667 [2023-08-30 02:23:15,040 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1059 transitions. [2023-08-30 02:23:15,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1059 transitions. [2023-08-30 02:23:15,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:15,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1059 transitions. [2023-08-30 02:23:15,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.1875) internal successors, (1059), 16 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:15,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:15,047 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:15,047 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 749 flow. Second operand 16 states and 1059 transitions. [2023-08-30 02:23:15,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1567 flow [2023-08-30 02:23:15,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1188 flow, removed 176 selfloop flow, removed 5 redundant places. [2023-08-30 02:23:15,063 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 837 flow [2023-08-30 02:23:15,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2023-08-30 02:23:15,063 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2023-08-30 02:23:15,063 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 837 flow [2023-08-30 02:23:15,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 62.75) internal successors, (1004), 16 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:15,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:15,064 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:15,076 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 02:23:15,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 02:23:15,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:15,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash -157115917, now seen corresponding path program 5 times [2023-08-30 02:23:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:15,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750539136] [2023-08-30 02:23:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:15,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:15,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:15,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750539136] [2023-08-30 02:23:15,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750539136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:15,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517347764] [2023-08-30 02:23:15,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:23:15,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:15,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:15,391 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 02:23:15,405 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 02:23:15,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 02:23:15,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:15,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 02:23:15,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:15,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:15,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517347764] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:15,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 02:23:15,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486260723] [2023-08-30 02:23:15,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:15,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 02:23:15,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 02:23:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-30 02:23:15,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:15,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 837 flow. Second operand has 17 states, 17 states have (on average 62.8235294117647) internal successors, (1068), 17 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:15,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:15,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:15,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:16,132 INFO L130 PetriNetUnfolder]: 418/767 cut-off events. [2023-08-30 02:23:16,132 INFO L131 PetriNetUnfolder]: For 14603/14603 co-relation queries the response was YES. [2023-08-30 02:23:16,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 767 events. 418/767 cut-off events. For 14603/14603 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3396 event pairs, 44 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4356. Up to 230 conditions per place. [2023-08-30 02:23:16,139 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-08-30 02:23:16,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 2229 flow [2023-08-30 02:23:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 02:23:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 02:23:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1456 transitions. [2023-08-30 02:23:16,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2023-08-30 02:23:16,143 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1456 transitions. [2023-08-30 02:23:16,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1456 transitions. [2023-08-30 02:23:16,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:16,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1456 transitions. [2023-08-30 02:23:16,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.18181818181819) internal successors, (1456), 22 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:16,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 144.0) internal successors, (3312), 23 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:16,152 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 144.0) internal successors, (3312), 23 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:16,152 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 837 flow. Second operand 22 states and 1456 transitions. [2023-08-30 02:23:16,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 2229 flow [2023-08-30 02:23:16,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 183 transitions, 2088 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-08-30 02:23:16,201 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1568 flow [2023-08-30 02:23:16,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1568, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2023-08-30 02:23:16,202 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2023-08-30 02:23:16,202 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1568 flow [2023-08-30 02:23:16,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.8235294117647) internal successors, (1068), 17 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:16,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:16,203 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:16,213 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 02:23:16,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:16,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:16,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash 384037113, now seen corresponding path program 6 times [2023-08-30 02:23:16,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:16,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653129733] [2023-08-30 02:23:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:16,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:16,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:16,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653129733] [2023-08-30 02:23:16,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653129733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:16,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252601379] [2023-08-30 02:23:16,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:23:16,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:16,519 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 02:23:16,547 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 02:23:16,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 02:23:16,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:16,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 02:23:16,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:16,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:16,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252601379] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:16,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:16,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 02:23:16,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692923298] [2023-08-30 02:23:16,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:16,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 02:23:16,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:16,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 02:23:16,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-30 02:23:16,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:16,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1568 flow. Second operand has 17 states, 17 states have (on average 62.76470588235294) internal successors, (1067), 17 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:16,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:16,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:16,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:17,361 INFO L130 PetriNetUnfolder]: 582/1047 cut-off events. [2023-08-30 02:23:17,361 INFO L131 PetriNetUnfolder]: For 36450/36450 co-relation queries the response was YES. [2023-08-30 02:23:17,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7695 conditions, 1047 events. 582/1047 cut-off events. For 36450/36450 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4876 event pairs, 20 based on Foata normal form. 32/1079 useless extension candidates. Maximal degree in co-relation 7644. Up to 330 conditions per place. [2023-08-30 02:23:17,372 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 61 selfloop transitions, 129 changer transitions 48/238 dead transitions. [2023-08-30 02:23:17,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 238 transitions, 3794 flow [2023-08-30 02:23:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 02:23:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 02:23:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1787 transitions. [2023-08-30 02:23:17,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45961934156378603 [2023-08-30 02:23:17,381 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1787 transitions. [2023-08-30 02:23:17,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1787 transitions. [2023-08-30 02:23:17,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:17,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1787 transitions. [2023-08-30 02:23:17,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 66.18518518518519) internal successors, (1787), 27 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:17,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 144.0) internal successors, (4032), 28 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:17,396 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 144.0) internal successors, (4032), 28 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:17,396 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1568 flow. Second operand 27 states and 1787 transitions. [2023-08-30 02:23:17,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 238 transitions, 3794 flow [2023-08-30 02:23:17,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 238 transitions, 3449 flow, removed 164 selfloop flow, removed 4 redundant places. [2023-08-30 02:23:17,505 INFO L231 Difference]: Finished difference. Result has 159 places, 151 transitions, 2588 flow [2023-08-30 02:23:17,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2588, PETRI_PLACES=159, PETRI_TRANSITIONS=151} [2023-08-30 02:23:17,506 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2023-08-30 02:23:17,506 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 151 transitions, 2588 flow [2023-08-30 02:23:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.76470588235294) internal successors, (1067), 17 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:17,507 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:17,521 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 02:23:17,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:17,713 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:17,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 107817203, now seen corresponding path program 7 times [2023-08-30 02:23:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79466232] [2023-08-30 02:23:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79466232] [2023-08-30 02:23:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79466232] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450502494] [2023-08-30 02:23:17,885 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:23:17,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:17,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:17,887 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 02:23:17,913 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 02:23:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:17,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 02:23:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:18,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:18,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450502494] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:18,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-08-30 02:23:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550159289] [2023-08-30 02:23:18,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:18,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 02:23:18,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 02:23:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-08-30 02:23:18,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:18,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 151 transitions, 2588 flow. Second operand has 24 states, 24 states have (on average 62.458333333333336) internal successors, (1499), 24 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:18,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:18,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:18,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:19,208 INFO L130 PetriNetUnfolder]: 814/1447 cut-off events. [2023-08-30 02:23:19,208 INFO L131 PetriNetUnfolder]: For 88367/88367 co-relation queries the response was YES. [2023-08-30 02:23:19,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13714 conditions, 1447 events. 814/1447 cut-off events. For 88367/88367 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6581 event pairs, 26 based on Foata normal form. 40/1487 useless extension candidates. Maximal degree in co-relation 13647. Up to 485 conditions per place. [2023-08-30 02:23:19,225 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 69 selfloop transitions, 184 changer transitions 70/323 dead transitions. [2023-08-30 02:23:19,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 323 transitions, 7011 flow [2023-08-30 02:23:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-30 02:23:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-30 02:23:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2506 transitions. [2023-08-30 02:23:19,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45796783625730997 [2023-08-30 02:23:19,230 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2506 transitions. [2023-08-30 02:23:19,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2506 transitions. [2023-08-30 02:23:19,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:19,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2506 transitions. [2023-08-30 02:23:19,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 65.94736842105263) internal successors, (2506), 38 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:19,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:19,243 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:19,243 INFO L175 Difference]: Start difference. First operand has 159 places, 151 transitions, 2588 flow. Second operand 38 states and 2506 transitions. [2023-08-30 02:23:19,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 323 transitions, 7011 flow [2023-08-30 02:23:19,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 323 transitions, 5420 flow, removed 770 selfloop flow, removed 10 redundant places. [2023-08-30 02:23:19,429 INFO L231 Difference]: Finished difference. Result has 206 places, 212 transitions, 3805 flow [2023-08-30 02:23:19,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3805, PETRI_PLACES=206, PETRI_TRANSITIONS=212} [2023-08-30 02:23:19,430 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 182 predicate places. [2023-08-30 02:23:19,430 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 212 transitions, 3805 flow [2023-08-30 02:23:19,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 62.458333333333336) internal successors, (1499), 24 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:19,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:19,431 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:19,443 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 02:23:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 02:23:19,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:19,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1076313209, now seen corresponding path program 8 times [2023-08-30 02:23:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340364594] [2023-08-30 02:23:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:19,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:19,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340364594] [2023-08-30 02:23:19,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340364594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:19,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125433675] [2023-08-30 02:23:19,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:23:19,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:19,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:23:19,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 02:23:20,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:23:20,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:20,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 02:23:20,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:20,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125433675] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:20,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:20,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-08-30 02:23:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493291417] [2023-08-30 02:23:20,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:20,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 02:23:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 02:23:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 02:23:20,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:20,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 212 transitions, 3805 flow. Second operand has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:20,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:20,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:20,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:22,045 INFO L130 PetriNetUnfolder]: 934/1687 cut-off events. [2023-08-30 02:23:22,046 INFO L131 PetriNetUnfolder]: For 149489/149489 co-relation queries the response was YES. [2023-08-30 02:23:22,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17933 conditions, 1687 events. 934/1687 cut-off events. For 149489/149489 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7555 event pairs, 265 based on Foata normal form. 80/1767 useless extension candidates. Maximal degree in co-relation 17847. Up to 1189 conditions per place. [2023-08-30 02:23:22,070 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 227 selfloop transitions, 61 changer transitions 75/363 dead transitions. [2023-08-30 02:23:22,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 363 transitions, 8457 flow [2023-08-30 02:23:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-30 02:23:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-30 02:23:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2631 transitions. [2023-08-30 02:23:22,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45677083333333335 [2023-08-30 02:23:22,075 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2631 transitions. [2023-08-30 02:23:22,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2631 transitions. [2023-08-30 02:23:22,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:22,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2631 transitions. [2023-08-30 02:23:22,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 65.775) internal successors, (2631), 40 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:22,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 144.0) internal successors, (5904), 41 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:22,088 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 144.0) internal successors, (5904), 41 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:22,088 INFO L175 Difference]: Start difference. First operand has 206 places, 212 transitions, 3805 flow. Second operand 40 states and 2631 transitions. [2023-08-30 02:23:22,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 363 transitions, 8457 flow [2023-08-30 02:23:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 363 transitions, 7153 flow, removed 626 selfloop flow, removed 6 redundant places. [2023-08-30 02:23:22,398 INFO L231 Difference]: Finished difference. Result has 261 places, 242 transitions, 4526 flow [2023-08-30 02:23:22,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4526, PETRI_PLACES=261, PETRI_TRANSITIONS=242} [2023-08-30 02:23:22,399 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 237 predicate places. [2023-08-30 02:23:22,399 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 242 transitions, 4526 flow [2023-08-30 02:23:22,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:22,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:22,401 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:22,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 02:23:22,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 02:23:22,611 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:22,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash 763683891, now seen corresponding path program 9 times [2023-08-30 02:23:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:22,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679835194] [2023-08-30 02:23:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:23,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679835194] [2023-08-30 02:23:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679835194] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433744712] [2023-08-30 02:23:23,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:23:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:23,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:23,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:23:23,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 02:23:23,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-08-30 02:23:23,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:23,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 02:23:23,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:23,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:23,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433744712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:23,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:23,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-08-30 02:23:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428055175] [2023-08-30 02:23:23,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:23,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-30 02:23:23,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-30 02:23:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2023-08-30 02:23:23,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:23,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 242 transitions, 4526 flow. Second operand has 41 states, 41 states have (on average 62.31707317073171) internal successors, (2555), 41 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:23,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:23,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:23,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:25,604 INFO L130 PetriNetUnfolder]: 1214/2247 cut-off events. [2023-08-30 02:23:25,605 INFO L131 PetriNetUnfolder]: For 375706/375706 co-relation queries the response was YES. [2023-08-30 02:23:25,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27891 conditions, 2247 events. 1214/2247 cut-off events. For 375706/375706 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10854 event pairs, 166 based on Foata normal form. 80/2327 useless extension candidates. Maximal degree in co-relation 27782. Up to 881 conditions per place. [2023-08-30 02:23:25,649 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 188 selfloop transitions, 186 changer transitions 87/461 dead transitions. [2023-08-30 02:23:25,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 461 transitions, 10833 flow [2023-08-30 02:23:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-30 02:23:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-30 02:23:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3028 transitions. [2023-08-30 02:23:25,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571256038647343 [2023-08-30 02:23:25,657 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3028 transitions. [2023-08-30 02:23:25,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3028 transitions. [2023-08-30 02:23:25,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:25,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3028 transitions. [2023-08-30 02:23:25,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 65.82608695652173) internal successors, (3028), 46 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:25,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 144.0) internal successors, (6768), 47 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:25,672 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 144.0) internal successors, (6768), 47 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:25,672 INFO L175 Difference]: Start difference. First operand has 261 places, 242 transitions, 4526 flow. Second operand 46 states and 3028 transitions. [2023-08-30 02:23:25,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 461 transitions, 10833 flow [2023-08-30 02:23:26,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 461 transitions, 9674 flow, removed 552 selfloop flow, removed 14 redundant places. [2023-08-30 02:23:26,239 INFO L231 Difference]: Finished difference. Result has 312 places, 311 transitions, 6248 flow [2023-08-30 02:23:26,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6248, PETRI_PLACES=312, PETRI_TRANSITIONS=311} [2023-08-30 02:23:26,239 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 288 predicate places. [2023-08-30 02:23:26,240 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 311 transitions, 6248 flow [2023-08-30 02:23:26,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 62.31707317073171) internal successors, (2555), 41 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:26,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:26,240 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:26,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 02:23:26,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:26,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:26,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2072400751, now seen corresponding path program 10 times [2023-08-30 02:23:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:26,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745525388] [2023-08-30 02:23:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745525388] [2023-08-30 02:23:26,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745525388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854036211] [2023-08-30 02:23:26,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:23:26,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:26,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:23:26,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 02:23:26,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:23:26,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:26,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 02:23:26,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:27,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:27,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854036211] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:27,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:27,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-08-30 02:23:27,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836585879] [2023-08-30 02:23:27,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:27,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 02:23:27,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 02:23:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 02:23:27,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:27,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 311 transitions, 6248 flow. Second operand has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:27,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:27,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:27,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:29,547 INFO L130 PetriNetUnfolder]: 1686/3191 cut-off events. [2023-08-30 02:23:29,547 INFO L131 PetriNetUnfolder]: For 869618/869618 co-relation queries the response was YES. [2023-08-30 02:23:29,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47923 conditions, 3191 events. 1686/3191 cut-off events. For 869618/869618 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17382 event pairs, 98 based on Foata normal form. 80/3271 useless extension candidates. Maximal degree in co-relation 47793. Up to 1337 conditions per place. [2023-08-30 02:23:29,602 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 143 selfloop transitions, 359 changer transitions 97/599 dead transitions. [2023-08-30 02:23:29,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 599 transitions, 15945 flow [2023-08-30 02:23:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-30 02:23:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-30 02:23:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3357 transitions. [2023-08-30 02:23:29,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571078431372549 [2023-08-30 02:23:29,617 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3357 transitions. [2023-08-30 02:23:29,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3357 transitions. [2023-08-30 02:23:29,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:29,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3357 transitions. [2023-08-30 02:23:29,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 65.82352941176471) internal successors, (3357), 51 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:29,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 144.0) internal successors, (7488), 52 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:29,641 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 144.0) internal successors, (7488), 52 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:29,642 INFO L175 Difference]: Start difference. First operand has 312 places, 311 transitions, 6248 flow. Second operand 51 states and 3357 transitions. [2023-08-30 02:23:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 599 transitions, 15945 flow [2023-08-30 02:23:31,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 599 transitions, 13961 flow, removed 951 selfloop flow, removed 14 redundant places. [2023-08-30 02:23:31,217 INFO L231 Difference]: Finished difference. Result has 372 places, 434 transitions, 9539 flow [2023-08-30 02:23:31,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4696, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=9539, PETRI_PLACES=372, PETRI_TRANSITIONS=434} [2023-08-30 02:23:31,218 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 348 predicate places. [2023-08-30 02:23:31,218 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 434 transitions, 9539 flow [2023-08-30 02:23:31,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:31,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:31,219 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:31,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 02:23:31,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 02:23:31,426 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:31,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1171194281, now seen corresponding path program 11 times [2023-08-30 02:23:31,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:31,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007001884] [2023-08-30 02:23:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:31,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007001884] [2023-08-30 02:23:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007001884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997063433] [2023-08-30 02:23:31,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:23:31,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:31,741 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:23:31,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 02:23:31,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-30 02:23:31,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:31,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 02:23:31,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:31,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997063433] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:32,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:32,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-08-30 02:23:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877455601] [2023-08-30 02:23:32,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:32,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 02:23:32,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:32,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 02:23:32,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 02:23:32,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:32,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 434 transitions, 9539 flow. Second operand has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:32,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:32,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:32,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:35,266 INFO L130 PetriNetUnfolder]: 2270/4251 cut-off events. [2023-08-30 02:23:35,266 INFO L131 PetriNetUnfolder]: For 1759091/1759091 co-relation queries the response was YES. [2023-08-30 02:23:35,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77430 conditions, 4251 events. 2270/4251 cut-off events. For 1759091/1759091 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 24504 event pairs, 32 based on Foata normal form. 80/4331 useless extension candidates. Maximal degree in co-relation 77275. Up to 1813 conditions per place. [2023-08-30 02:23:35,353 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 128 selfloop transitions, 542 changer transitions 101/771 dead transitions. [2023-08-30 02:23:35,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 771 transitions, 23776 flow [2023-08-30 02:23:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-30 02:23:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-30 02:23:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4150 transitions. [2023-08-30 02:23:35,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574514991181658 [2023-08-30 02:23:35,361 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4150 transitions. [2023-08-30 02:23:35,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4150 transitions. [2023-08-30 02:23:35,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:35,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4150 transitions. [2023-08-30 02:23:35,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 65.87301587301587) internal successors, (4150), 63 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:35,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 144.0) internal successors, (9216), 64 states have internal predecessors, (9216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:35,381 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 144.0) internal successors, (9216), 64 states have internal predecessors, (9216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:35,381 INFO L175 Difference]: Start difference. First operand has 372 places, 434 transitions, 9539 flow. Second operand 63 states and 4150 transitions. [2023-08-30 02:23:35,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 771 transitions, 23776 flow [2023-08-30 02:23:38,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 771 transitions, 18787 flow, removed 2416 selfloop flow, removed 17 redundant places. [2023-08-30 02:23:38,763 INFO L231 Difference]: Finished difference. Result has 448 places, 574 transitions, 13046 flow [2023-08-30 02:23:38,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=6972, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=13046, PETRI_PLACES=448, PETRI_TRANSITIONS=574} [2023-08-30 02:23:38,764 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 424 predicate places. [2023-08-30 02:23:38,764 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 574 transitions, 13046 flow [2023-08-30 02:23:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:38,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:38,765 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:38,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 02:23:38,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:38,965 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:38,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -5223461, now seen corresponding path program 12 times [2023-08-30 02:23:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:38,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667417132] [2023-08-30 02:23:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:38,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:39,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667417132] [2023-08-30 02:23:39,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667417132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292723617] [2023-08-30 02:23:39,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:23:39,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:39,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:39,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:23:39,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 02:23:39,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-08-30 02:23:39,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:39,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 02:23:39,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:39,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:23:39,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292723617] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:39,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:39,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2023-08-30 02:23:39,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329645499] [2023-08-30 02:23:39,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:39,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-30 02:23:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:39,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-30 02:23:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2023-08-30 02:23:39,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:39,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 574 transitions, 13046 flow. Second operand has 43 states, 43 states have (on average 62.30232558139535) internal successors, (2679), 43 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:39,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:39,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:43,571 INFO L130 PetriNetUnfolder]: 2678/4995 cut-off events. [2023-08-30 02:23:43,571 INFO L131 PetriNetUnfolder]: For 2229793/2229793 co-relation queries the response was YES. [2023-08-30 02:23:43,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100151 conditions, 4995 events. 2678/4995 cut-off events. For 2229793/2229793 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 28613 event pairs, 20 based on Foata normal form. 84/5079 useless extension candidates. Maximal degree in co-relation 99965. Up to 2137 conditions per place. [2023-08-30 02:23:43,673 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 114 selfloop transitions, 654 changer transitions 144/912 dead transitions. [2023-08-30 02:23:43,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 912 transitions, 34141 flow [2023-08-30 02:23:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-08-30 02:23:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-08-30 02:23:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 4939 transitions. [2023-08-30 02:23:43,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45731481481481484 [2023-08-30 02:23:43,681 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 4939 transitions. [2023-08-30 02:23:43,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 4939 transitions. [2023-08-30 02:23:43,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:43,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 4939 transitions. [2023-08-30 02:23:43,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 65.85333333333334) internal successors, (4939), 75 states have internal predecessors, (4939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:43,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:43,705 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:43,705 INFO L175 Difference]: Start difference. First operand has 448 places, 574 transitions, 13046 flow. Second operand 75 states and 4939 transitions. [2023-08-30 02:23:43,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 912 transitions, 34141 flow [2023-08-30 02:23:48,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 912 transitions, 26523 flow, removed 3610 selfloop flow, removed 25 redundant places. [2023-08-30 02:23:48,418 INFO L231 Difference]: Finished difference. Result has 535 places, 687 transitions, 17282 flow [2023-08-30 02:23:48,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=9502, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=17282, PETRI_PLACES=535, PETRI_TRANSITIONS=687} [2023-08-30 02:23:48,419 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 511 predicate places. [2023-08-30 02:23:48,419 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 687 transitions, 17282 flow [2023-08-30 02:23:48,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 62.30232558139535) internal successors, (2679), 43 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:48,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:48,420 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:48,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 02:23:48,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:48,626 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:48,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash 155623333, now seen corresponding path program 13 times [2023-08-30 02:23:48,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:23:48,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723609652] [2023-08-30 02:23:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:23:48,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:23:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:49,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:23:49,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723609652] [2023-08-30 02:23:49,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723609652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:23:49,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201965127] [2023-08-30 02:23:49,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:23:49,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:23:49,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:23:49,323 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:23:49,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 02:23:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:23:49,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-30 02:23:49,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:49,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:50,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201965127] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:50,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:23:50,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 46 [2023-08-30 02:23:50,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428162983] [2023-08-30 02:23:50,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:50,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-30 02:23:50,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:23:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-30 02:23:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2023-08-30 02:23:50,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:23:50,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 687 transitions, 17282 flow. Second operand has 48 states, 48 states have (on average 62.25) internal successors, (2988), 48 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:50,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:50,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:23:50,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:55,578 INFO L130 PetriNetUnfolder]: 2934/5423 cut-off events. [2023-08-30 02:23:55,578 INFO L131 PetriNetUnfolder]: For 3553199/3553199 co-relation queries the response was YES. [2023-08-30 02:23:55,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126944 conditions, 5423 events. 2934/5423 cut-off events. For 3553199/3553199 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 30789 event pairs, 18 based on Foata normal form. 28/5451 useless extension candidates. Maximal degree in co-relation 126720. Up to 2285 conditions per place. [2023-08-30 02:23:55,696 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 133 selfloop transitions, 720 changer transitions 170/1023 dead transitions. [2023-08-30 02:23:55,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1023 transitions, 39711 flow [2023-08-30 02:23:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-30 02:23:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-30 02:23:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5782 transitions. [2023-08-30 02:23:55,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45628156565656564 [2023-08-30 02:23:55,704 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5782 transitions. [2023-08-30 02:23:55,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5782 transitions. [2023-08-30 02:23:55,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:55,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5782 transitions. [2023-08-30 02:23:55,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 65.70454545454545) internal successors, (5782), 88 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:55,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:55,724 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:55,724 INFO L175 Difference]: Start difference. First operand has 535 places, 687 transitions, 17282 flow. Second operand 88 states and 5782 transitions. [2023-08-30 02:23:55,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1023 transitions, 39711 flow [2023-08-30 02:24:04,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1023 transitions, 30533 flow, removed 4441 selfloop flow, removed 18 redundant places. [2023-08-30 02:24:04,958 INFO L231 Difference]: Finished difference. Result has 618 places, 751 transitions, 16536 flow [2023-08-30 02:24:04,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=12046, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=16536, PETRI_PLACES=618, PETRI_TRANSITIONS=751} [2023-08-30 02:24:04,960 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 594 predicate places. [2023-08-30 02:24:04,960 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 751 transitions, 16536 flow [2023-08-30 02:24:04,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 62.25) internal successors, (2988), 48 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:04,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:04,961 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:04,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:05,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 02:24:05,162 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:05,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1381319199, now seen corresponding path program 14 times [2023-08-30 02:24:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:05,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466584659] [2023-08-30 02:24:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:05,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:24:05,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:24:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:24:05,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:24:05,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:24:05,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-30 02:24:05,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-30 02:24:05,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-30 02:24:05,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-30 02:24:05,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-30 02:24:05,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-30 02:24:05,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 02:24:05,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 02:24:05,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 02:24:05,235 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:05,239 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 02:24:05,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:24:05,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:24:05 BasicIcfg [2023-08-30 02:24:05,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:24:05,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:24:05,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:24:05,308 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:24:05,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:23:08" (3/4) ... [2023-08-30 02:24:05,311 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:24:05,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:24:05,313 INFO L158 Benchmark]: Toolchain (without parser) took 58208.33ms. Allocated memory was 79.7MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 55.9MB in the beginning and 2.6GB in the end (delta: -2.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 02:24:05,314 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:24:05,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.15ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 54.2MB in the end (delta: 1.7MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2023-08-30 02:24:05,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.85ms. Allocated memory is still 79.7MB. Free memory was 54.2MB in the beginning and 52.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:24:05,315 INFO L158 Benchmark]: Boogie Preprocessor took 34.67ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 50.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:24:05,315 INFO L158 Benchmark]: RCFGBuilder took 356.40ms. Allocated memory is still 79.7MB. Free memory was 50.9MB in the beginning and 37.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 02:24:05,315 INFO L158 Benchmark]: TraceAbstraction took 57261.38ms. Allocated memory was 79.7MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 37.0MB in the beginning and 2.6GB in the end (delta: -2.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 02:24:05,315 INFO L158 Benchmark]: Witness Printer took 3.61ms. Allocated memory is still 3.9GB. Free memory is still 2.6GB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:24:05,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.15ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 54.2MB in the end (delta: 1.7MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.85ms. Allocated memory is still 79.7MB. Free memory was 54.2MB in the beginning and 52.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.67ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 50.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 356.40ms. Allocated memory is still 79.7MB. Free memory was 50.9MB in the beginning and 37.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 57261.38ms. Allocated memory was 79.7MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 37.0MB in the beginning and 2.6GB in the end (delta: -2.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 3.61ms. Allocated memory is still 3.9GB. Free memory is still 2.6GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 74 PlacesBefore, 24 PlacesAfterwards, 72 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 1104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 978, independent: 952, independent conditional: 0, independent unconditional: 952, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 644, independent: 633, independent conditional: 0, independent unconditional: 633, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 978, independent: 319, independent conditional: 0, independent unconditional: 319, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 644, unknown conditional: 0, unknown unconditional: 644] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={3:0}, id2={5:0}, j=46, k=20, k=20] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 92 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 57.1s, OverallIterations: 22, TraceHistogramMax: 20, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 42.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6724 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6511 mSDsluCounter, 1100 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1062 mSDsCounter, 583 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5964 IncrementalHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 583 mSolverCounterUnsat, 38 mSDtfsCounter, 5964 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1109 GetRequests, 293 SyntacticMatches, 30 SemanticMatches, 786 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19565 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17282occurred in iteration=20, InterpolantAutomatonStates: 529, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 602 NumberOfCodeBlocks, 601 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 756 ConstructedInterpolants, 0 QuantifiedInterpolants, 3440 SizeOfPredicates, 149 NumberOfNonLiveVariables, 2045 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 43 InterpolantComputations, 10 PerfectInterpolantSequences, 24/2151 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 02:24:05,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:24:07,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:24:07,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:24:07,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:24:07,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:24:07,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:24:07,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:24:07,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:24:07,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:24:07,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:24:07,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:24:07,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:24:07,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:24:07,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:24:07,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:24:07,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:24:07,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:24:07,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:24:07,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:24:07,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:24:07,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:24:07,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:24:07,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:24:07,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:24:07,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:24:07,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:24:07,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:24:07,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:24:07,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:24:07,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:24:07,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:24:07,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:24:07,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:24:07,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:24:07,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:24:07,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:24:07,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:24:07,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:24:07,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:24:07,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:24:07,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:24:07,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 02:24:07,651 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:24:07,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:24:07,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:24:07,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:24:07,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:24:07,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:24:07,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:24:07,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:24:07,655 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:24:07,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:24:07,656 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:24:07,656 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:24:07,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:24:07,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:24:07,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:24:07,657 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:24:07,657 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:24:07,657 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:24:07,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:24:07,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:24:07,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 02:24:07,658 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 02:24:07,658 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:24:07,658 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:24:07,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:24:07,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:24:07,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:24:07,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:24:07,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:24:07,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:24:07,660 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 02:24:07,660 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 02:24:07,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:24:07,661 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:24:07,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:24:07,661 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 02:24:07,661 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:24:07,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:24:07,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:24:08,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:24:08,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:24:08,005 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:24:08,005 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:24:08,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-30 02:24:09,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:24:09,482 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:24:09,486 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-30 02:24:09,503 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43b4ac1c/888242d2180f42adb78737e2f6c9825a/FLAGb4ff46a62 [2023-08-30 02:24:09,521 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43b4ac1c/888242d2180f42adb78737e2f6c9825a [2023-08-30 02:24:09,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:24:09,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:24:09,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:24:09,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:24:09,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:24:09,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:09,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2596e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09, skipping insertion in model container [2023-08-30 02:24:09,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:09,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:24:09,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:24:09,846 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-08-30 02:24:09,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:24:09,866 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:24:09,926 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-08-30 02:24:09,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:24:09,991 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:24:09,991 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:24:09,997 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:24:09,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09 WrapperNode [2023-08-30 02:24:09,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:24:09,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:24:09,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:24:09,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:24:10,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,047 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-08-30 02:24:10,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:24:10,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:24:10,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:24:10,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:24:10,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:24:10,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:24:10,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:24:10,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:24:10,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (1/1) ... [2023-08-30 02:24:10,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:24:10,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:24:10,122 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 02:24:10,150 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 02:24:10,166 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 02:24:10,166 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 02:24:10,166 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 02:24:10,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 02:24:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:24:10,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:24:10,169 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 02:24:10,321 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:24:10,323 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:24:10,591 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:24:10,597 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:24:10,597 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 02:24:10,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:24:10 BoogieIcfgContainer [2023-08-30 02:24:10,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:24:10,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:24:10,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:24:10,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:24:10,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:24:09" (1/3) ... [2023-08-30 02:24:10,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b595e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:24:10, skipping insertion in model container [2023-08-30 02:24:10,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:09" (2/3) ... [2023-08-30 02:24:10,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b595e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:24:10, skipping insertion in model container [2023-08-30 02:24:10,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:24:10" (3/3) ... [2023-08-30 02:24:10,611 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-08-30 02:24:10,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:24:10,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 02:24:10,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:24:10,723 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:24:10,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 160 flow [2023-08-30 02:24:10,807 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-30 02:24:10,807 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:24:10,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:24:10,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 160 flow [2023-08-30 02:24:10,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 152 flow [2023-08-30 02:24:10,822 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:24:10,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-30 02:24:10,841 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-30 02:24:10,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 152 flow [2023-08-30 02:24:10,869 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-30 02:24:10,870 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:24:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:24:10,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-30 02:24:14,705 INFO L134 LiptonReduction]: Checked pairs total: 1134 [2023-08-30 02:24:14,705 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-30 02:24:14,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:24:14,724 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;@7cd185fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:24:14,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 02:24:14,726 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:24:14,726 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:24:14,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:14,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:24:14,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:14,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 295, now seen corresponding path program 1 times [2023-08-30 02:24:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:14,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342379262] [2023-08-30 02:24:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:14,742 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 02:24:14,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:14,757 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 02:24:14,769 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 02:24:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:14,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 02:24:14,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:14,856 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 02:24:14,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:14,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:14,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342379262] [2023-08-30 02:24:14,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342379262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:14,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:14,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:24:14,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301107355] [2023-08-30 02:24:14,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:14,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:24:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:24:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:24:14,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2023-08-30 02:24:14,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:14,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:14,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2023-08-30 02:24:14,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:14,980 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-30 02:24:14,980 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:24:14,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 464 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-30 02:24:14,994 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-30 02:24:14,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-30 02:24:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:24:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:24:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2023-08-30 02:24:15,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2023-08-30 02:24:15,018 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2023-08-30 02:24:15,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2023-08-30 02:24:15,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:15,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2023-08-30 02:24:15,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,027 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,036 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 158 transitions. [2023-08-30 02:24:15,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-30 02:24:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:15,039 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-30 02:24:15,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-30 02:24:15,043 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:24:15,044 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-30 02:24:15,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:15,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:24:15,059 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 02:24:15,252 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 02:24:15,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:15,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:15,254 INFO L85 PathProgramCache]: Analyzing trace with hash 288861, now seen corresponding path program 1 times [2023-08-30 02:24:15,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:15,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498176293] [2023-08-30 02:24:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:15,255 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 02:24:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:15,256 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 02:24:15,259 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 02:24:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:15,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 02:24:15,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:15,369 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 02:24:15,370 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 02:24:15,381 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 02:24:15,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:15,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:15,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498176293] [2023-08-30 02:24:15,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498176293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:15,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:15,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532453737] [2023-08-30 02:24:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:15,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:15,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:15,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:15,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:15,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:15,511 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-30 02:24:15,512 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:24:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 349 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-08-30 02:24:15,513 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-30 02:24:15,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-30 02:24:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-30 02:24:15,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-30 02:24:15,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-30 02:24:15,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-30 02:24:15,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:15,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-30 02:24:15,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,524 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 208 transitions. [2023-08-30 02:24:15,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-30 02:24:15,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:24:15,526 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-30 02:24:15,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 02:24:15,526 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:24:15,527 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-30 02:24:15,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:15,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:24:15,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:15,728 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 02:24:15,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:15,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:15,729 INFO L85 PathProgramCache]: Analyzing trace with hash 288862, now seen corresponding path program 1 times [2023-08-30 02:24:15,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:15,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295244694] [2023-08-30 02:24:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:15,730 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 02:24:15,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:15,731 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 02:24:15,758 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 02:24:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:15,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 02:24:15,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:15,829 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 02:24:15,830 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 02:24:15,849 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 02:24:15,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:15,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:15,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295244694] [2023-08-30 02:24:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295244694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:15,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739432994] [2023-08-30 02:24:15,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:15,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:15,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:15,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:15,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 144 [2023-08-30 02:24:15,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:15,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 144 [2023-08-30 02:24:15,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:15,949 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-30 02:24:15,949 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 02:24:15,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 326 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-08-30 02:24:15,951 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-30 02:24:15,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-30 02:24:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-30 02:24:15,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 02:24:15,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-30 02:24:15,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-30 02:24:15,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:15,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-30 02:24:15,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,957 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 216 transitions. [2023-08-30 02:24:15,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-30 02:24:15,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:15,958 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-30 02:24:15,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 02:24:15,959 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-30 02:24:15,959 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-30 02:24:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:15,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:15,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:24:15,969 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 02:24:16,168 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 02:24:16,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:16,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 15687470, now seen corresponding path program 1 times [2023-08-30 02:24:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:16,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722914120] [2023-08-30 02:24:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:16,170 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 02:24:16,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:16,172 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 02:24:16,179 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 02:24:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:16,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:24:16,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:16,276 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 02:24:16,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:16,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:16,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722914120] [2023-08-30 02:24:16,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722914120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:16,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:16,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:24:16,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088606063] [2023-08-30 02:24:16,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:16,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:24:16,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:16,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:24:16,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:24:16,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 144 [2023-08-30 02:24:16,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:16,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:16,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 144 [2023-08-30 02:24:16,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:16,436 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2023-08-30 02:24:16,436 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 02:24:16,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 878 event pairs, 14 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2023-08-30 02:24:16,438 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-30 02:24:16,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2023-08-30 02:24:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:24:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:24:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2023-08-30 02:24:16,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-08-30 02:24:16,454 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 355 transitions. [2023-08-30 02:24:16,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 355 transitions. [2023-08-30 02:24:16,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:16,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 355 transitions. [2023-08-30 02:24:16,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:16,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:16,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:16,459 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 355 transitions. [2023-08-30 02:24:16,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2023-08-30 02:24:16,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:16,461 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2023-08-30 02:24:16,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-08-30 02:24:16,462 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-30 02:24:16,462 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2023-08-30 02:24:16,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:16,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:16,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:16,474 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 02:24:16,671 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 02:24:16,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:16,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 486312123, now seen corresponding path program 1 times [2023-08-30 02:24:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263895773] [2023-08-30 02:24:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:16,673 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 02:24:16,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:16,675 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 02:24:16,677 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 02:24:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:16,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 02:24:16,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:16,928 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 02:24:16,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:16,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263895773] [2023-08-30 02:24:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263895773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:16,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:16,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:24:16,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976053579] [2023-08-30 02:24:16,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:24:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:24:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:24:19,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 02:24:19,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 144 [2023-08-30 02:24:19,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:19,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 144 [2023-08-30 02:24:19,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:19,254 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2023-08-30 02:24:19,255 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-30 02:24:19,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 629 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2023-08-30 02:24:19,256 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2023-08-30 02:24:19,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2023-08-30 02:24:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:24:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:24:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-08-30 02:24:19,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2023-08-30 02:24:19,258 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 236 transitions. [2023-08-30 02:24:19,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 236 transitions. [2023-08-30 02:24:19,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:19,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 236 transitions. [2023-08-30 02:24:19,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,261 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 236 transitions. [2023-08-30 02:24:19,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2023-08-30 02:24:19,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:24:19,263 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2023-08-30 02:24:19,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-30 02:24:19,264 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-08-30 02:24:19,264 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2023-08-30 02:24:19,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:19,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:19,280 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 02:24:19,474 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 02:24:19,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:19,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2080325179, now seen corresponding path program 1 times [2023-08-30 02:24:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:19,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830631579] [2023-08-30 02:24:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:19,475 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 02:24:19,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:19,476 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 02:24:19,478 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 02:24:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:19,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:24:19,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:19,567 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 02:24:19,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:19,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830631579] [2023-08-30 02:24:19,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830631579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:19,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:24:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248045920] [2023-08-30 02:24:19,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:19,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:19,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:19,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:19,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:19,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:19,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:19,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:19,714 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2023-08-30 02:24:19,714 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 02:24:19,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2023-08-30 02:24:19,716 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2023-08-30 02:24:19,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2023-08-30 02:24:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:24:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:24:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2023-08-30 02:24:19,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-08-30 02:24:19,718 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 342 transitions. [2023-08-30 02:24:19,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 342 transitions. [2023-08-30 02:24:19,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:19,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 342 transitions. [2023-08-30 02:24:19,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,721 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,721 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 342 transitions. [2023-08-30 02:24:19,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2023-08-30 02:24:19,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:24:19,723 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2023-08-30 02:24:19,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-30 02:24:19,724 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-30 02:24:19,724 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2023-08-30 02:24:19,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:19,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:19,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:19,740 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 02:24:19,934 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 02:24:19,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:19,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2104567520, now seen corresponding path program 1 times [2023-08-30 02:24:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:19,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374457316] [2023-08-30 02:24:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:19,935 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 02:24:19,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:19,936 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 02:24:19,937 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 02:24:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:19,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:24:19,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:20,029 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 02:24:20,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:20,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:20,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374457316] [2023-08-30 02:24:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374457316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:20,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:24:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092236212] [2023-08-30 02:24:20,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:20,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:20,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:20,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:20,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:20,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:20,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:20,176 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2023-08-30 02:24:20,176 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-30 02:24:20,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 716 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2023-08-30 02:24:20,178 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-30 02:24:20,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2023-08-30 02:24:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 02:24:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 02:24:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2023-08-30 02:24:20,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2023-08-30 02:24:20,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 410 transitions. [2023-08-30 02:24:20,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 410 transitions. [2023-08-30 02:24:20,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:20,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 410 transitions. [2023-08-30 02:24:20,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,183 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 410 transitions. [2023-08-30 02:24:20,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2023-08-30 02:24:20,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 02:24:20,185 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2023-08-30 02:24:20,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-30 02:24:20,186 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-08-30 02:24:20,190 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2023-08-30 02:24:20,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:20,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:20,202 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 02:24:20,400 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 02:24:20,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:20,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2104543340, now seen corresponding path program 2 times [2023-08-30 02:24:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055768778] [2023-08-30 02:24:20,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:24:20,401 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 02:24:20,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:20,402 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 02:24:20,405 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 02:24:20,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 02:24:20,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:20,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:24:20,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:20,514 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 02:24:20,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:20,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055768778] [2023-08-30 02:24:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055768778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:20,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:20,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:24:20,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044244814] [2023-08-30 02:24:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:20,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:20,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:20,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:20,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:20,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:20,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:20,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:20,647 INFO L130 PetriNetUnfolder]: 124/219 cut-off events. [2023-08-30 02:24:20,648 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2023-08-30 02:24:20,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 705 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2023-08-30 02:24:20,649 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2023-08-30 02:24:20,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2023-08-30 02:24:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 02:24:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 02:24:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2023-08-30 02:24:20,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47337962962962965 [2023-08-30 02:24:20,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2023-08-30 02:24:20,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2023-08-30 02:24:20,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:20,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2023-08-30 02:24:20,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,654 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 409 transitions. [2023-08-30 02:24:20,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2023-08-30 02:24:20,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-30 02:24:20,658 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2023-08-30 02:24:20,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-30 02:24:20,659 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2023-08-30 02:24:20,659 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2023-08-30 02:24:20,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:20,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:20,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:20,671 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 02:24:20,868 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 02:24:20,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:20,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:20,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2065235665, now seen corresponding path program 1 times [2023-08-30 02:24:20,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:20,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325116904] [2023-08-30 02:24:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:20,870 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 02:24:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:20,871 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 02:24:20,873 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 02:24:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:20,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 02:24:20,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:20,985 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 02:24:20,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:20,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:20,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325116904] [2023-08-30 02:24:20,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325116904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:20,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:20,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920075660] [2023-08-30 02:24:20,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:20,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:24:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:24:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:24:21,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:21,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:21,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:21,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:21,185 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-08-30 02:24:21,185 INFO L131 PetriNetUnfolder]: For 1057/1057 co-relation queries the response was YES. [2023-08-30 02:24:21,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1066 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2023-08-30 02:24:21,188 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2023-08-30 02:24:21,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2023-08-30 02:24:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 02:24:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 02:24:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 610 transitions. [2023-08-30 02:24:21,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470679012345679 [2023-08-30 02:24:21,190 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 610 transitions. [2023-08-30 02:24:21,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 610 transitions. [2023-08-30 02:24:21,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:21,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 610 transitions. [2023-08-30 02:24:21,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.77777777777777) internal successors, (610), 9 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,195 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 610 transitions. [2023-08-30 02:24:21,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2023-08-30 02:24:21,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:21,199 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2023-08-30 02:24:21,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-30 02:24:21,200 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-08-30 02:24:21,200 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2023-08-30 02:24:21,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:21,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:21,212 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 02:24:21,412 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 02:24:21,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:21,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2065211485, now seen corresponding path program 2 times [2023-08-30 02:24:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:21,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526760329] [2023-08-30 02:24:21,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:24:21,413 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 02:24:21,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:21,414 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 02:24:21,418 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 02:24:21,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 02:24:21,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:21,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 02:24:21,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:21,519 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 02:24:21,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:21,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526760329] [2023-08-30 02:24:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526760329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:21,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:21,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974509032] [2023-08-30 02:24:21,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:24:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:21,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:24:21,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:24:21,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:21,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:21,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:21,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:21,703 INFO L130 PetriNetUnfolder]: 168/299 cut-off events. [2023-08-30 02:24:21,704 INFO L131 PetriNetUnfolder]: For 1657/1657 co-relation queries the response was YES. [2023-08-30 02:24:21,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1074 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2023-08-30 02:24:21,706 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2023-08-30 02:24:21,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2023-08-30 02:24:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:24:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:24:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-30 02:24:21,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-30 02:24:21,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-30 02:24:21,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-30 02:24:21,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:21,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-30 02:24:21,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,713 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 476 transitions. [2023-08-30 02:24:21,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2023-08-30 02:24:21,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-30 02:24:21,721 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2023-08-30 02:24:21,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-08-30 02:24:21,722 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-30 02:24:21,722 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2023-08-30 02:24:21,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:21,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:21,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:21,732 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 02:24:21,932 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 02:24:21,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:21,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927585, now seen corresponding path program 3 times [2023-08-30 02:24:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:21,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879588171] [2023-08-30 02:24:21,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:24:21,933 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 02:24:21,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:21,934 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 02:24:21,935 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 02:24:21,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 02:24:21,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:21,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:24:21,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:22,080 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 02:24:22,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:22,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879588171] [2023-08-30 02:24:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879588171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:22,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205322372] [2023-08-30 02:24:22,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:22,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:24:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:24:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:24:22,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:22,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:22,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:22,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:22,278 INFO L130 PetriNetUnfolder]: 164/295 cut-off events. [2023-08-30 02:24:22,278 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2023-08-30 02:24:22,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2023-08-30 02:24:22,281 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2023-08-30 02:24:22,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2023-08-30 02:24:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:24:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:24:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-30 02:24:22,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-30 02:24:22,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-30 02:24:22,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-30 02:24:22,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:22,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-30 02:24:22,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,287 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 476 transitions. [2023-08-30 02:24:22,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2023-08-30 02:24:22,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 02:24:22,293 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2023-08-30 02:24:22,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-08-30 02:24:22,293 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-08-30 02:24:22,294 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2023-08-30 02:24:22,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:22,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:22,308 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 02:24:22,503 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 02:24:22,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:22,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2065153825, now seen corresponding path program 4 times [2023-08-30 02:24:22,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:22,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90177832] [2023-08-30 02:24:22,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:24:22,504 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 02:24:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:22,505 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 02:24:22,506 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 02:24:22,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:24:22,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:22,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 02:24:22,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:22,610 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 02:24:22,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:24:22,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90177832] [2023-08-30 02:24:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90177832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:22,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:22,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:22,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685157485] [2023-08-30 02:24:22,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:22,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:24:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:24:22,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:24:22,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:22,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:22,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:22,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:22,786 INFO L130 PetriNetUnfolder]: 176/315 cut-off events. [2023-08-30 02:24:22,786 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2023-08-30 02:24:22,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1176 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2023-08-30 02:24:22,789 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2023-08-30 02:24:22,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2023-08-30 02:24:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:24:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:24:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-08-30 02:24:22,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712301587301587 [2023-08-30 02:24:22,791 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-08-30 02:24:22,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-08-30 02:24:22,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:22,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-08-30 02:24:22,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,795 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,795 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 475 transitions. [2023-08-30 02:24:22,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2023-08-30 02:24:22,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 02:24:22,803 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2023-08-30 02:24:22,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-08-30 02:24:22,804 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-08-30 02:24:22,804 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2023-08-30 02:24:22,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:22,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:22,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:23,013 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 02:24:23,014 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:23,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:23,014 INFO L85 PathProgramCache]: Analyzing trace with hash 402976459, now seen corresponding path program 5 times [2023-08-30 02:24:23,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:23,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300018238] [2023-08-30 02:24:23,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:24:23,015 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 02:24:23,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:23,015 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 02:24:23,016 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 02:24:23,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:24:23,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:23,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:24:23,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:23,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:23,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300018238] [2023-08-30 02:24:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300018238] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:23,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:23,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:24:23,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150106801] [2023-08-30 02:24:23,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:23,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:24:23,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:24:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:24:23,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:23,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:23,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:23,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:23,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:24,041 INFO L130 PetriNetUnfolder]: 224/395 cut-off events. [2023-08-30 02:24:24,041 INFO L131 PetriNetUnfolder]: For 4433/4433 co-relation queries the response was YES. [2023-08-30 02:24:24,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1510 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2023-08-30 02:24:24,044 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2023-08-30 02:24:24,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2023-08-30 02:24:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 02:24:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 02:24:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-30 02:24:24,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-30 02:24:24,048 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-30 02:24:24,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-30 02:24:24,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:24,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-30 02:24:24,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:24,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:24,054 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:24,054 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1079 transitions. [2023-08-30 02:24:24,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2023-08-30 02:24:24,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-30 02:24:24,064 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2023-08-30 02:24:24,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-08-30 02:24:24,066 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2023-08-30 02:24:24,066 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2023-08-30 02:24:24,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:24,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:24,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:24,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:24,276 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 02:24:24,277 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:24,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash 380812761, now seen corresponding path program 6 times [2023-08-30 02:24:24,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:24,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284728818] [2023-08-30 02:24:24,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:24:24,278 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 02:24:24,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:24,279 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 02:24:24,280 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 02:24:24,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 02:24:24,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:24,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:24:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:24,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:24,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:24,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284728818] [2023-08-30 02:24:24,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284728818] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:24,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:24,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:24:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689393854] [2023-08-30 02:24:24,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:24,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:24:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:24:24,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:24:24,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:24,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:24,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:24,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:24,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:25,082 INFO L130 PetriNetUnfolder]: 248/443 cut-off events. [2023-08-30 02:24:25,082 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2023-08-30 02:24:25,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1711 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2023-08-30 02:24:25,086 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2023-08-30 02:24:25,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2023-08-30 02:24:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 02:24:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 02:24:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 809 transitions. [2023-08-30 02:24:25,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681712962962963 [2023-08-30 02:24:25,089 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 809 transitions. [2023-08-30 02:24:25,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 809 transitions. [2023-08-30 02:24:25,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:25,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 809 transitions. [2023-08-30 02:24:25,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 67.41666666666667) internal successors, (809), 12 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:25,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:25,095 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:25,095 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 809 transitions. [2023-08-30 02:24:25,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2023-08-30 02:24:25,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2023-08-30 02:24:25,113 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2023-08-30 02:24:25,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2023-08-30 02:24:25,114 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-30 02:24:25,114 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2023-08-30 02:24:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:25,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:25,115 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:25,125 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 02:24:25,324 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 02:24:25,325 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:25,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 404049741, now seen corresponding path program 7 times [2023-08-30 02:24:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:25,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465591648] [2023-08-30 02:24:25,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:24:25,327 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 02:24:25,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:25,328 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:25,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 02:24:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:25,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:24:25,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:25,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:25,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:25,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465591648] [2023-08-30 02:24:25,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465591648] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:25,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:25,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:24:25,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155745502] [2023-08-30 02:24:25,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:25,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:24:25,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:25,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:24:25,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:24:25,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:25,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:25,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:25,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:25,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:26,349 INFO L130 PetriNetUnfolder]: 336/603 cut-off events. [2023-08-30 02:24:26,349 INFO L131 PetriNetUnfolder]: For 12794/12794 co-relation queries the response was YES. [2023-08-30 02:24:26,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2591 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2023-08-30 02:24:26,355 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2023-08-30 02:24:26,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2023-08-30 02:24:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 02:24:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 02:24:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-30 02:24:26,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-30 02:24:26,360 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-30 02:24:26,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-30 02:24:26,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:26,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-30 02:24:26,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:26,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:26,367 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:26,367 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1079 transitions. [2023-08-30 02:24:26,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2023-08-30 02:24:26,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 02:24:26,385 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2023-08-30 02:24:26,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2023-08-30 02:24:26,386 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-08-30 02:24:26,386 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2023-08-30 02:24:26,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:26,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:26,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:26,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:26,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:26,596 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:26,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash 404765841, now seen corresponding path program 8 times [2023-08-30 02:24:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732900482] [2023-08-30 02:24:26,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:24:26,597 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 02:24:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:26,598 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:26,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 02:24:26,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:24:26,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:26,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:24:26,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:26,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:26,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:26,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732900482] [2023-08-30 02:24:26,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732900482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:26,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:26,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:24:26,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169190258] [2023-08-30 02:24:26,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:26,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:24:26,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:26,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:24:26,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:24:26,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:26,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:26,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:26,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:26,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:27,679 INFO L130 PetriNetUnfolder]: 384/691 cut-off events. [2023-08-30 02:24:27,679 INFO L131 PetriNetUnfolder]: For 24504/24504 co-relation queries the response was YES. [2023-08-30 02:24:27,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 24504/24504 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3071 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2023-08-30 02:24:27,686 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2023-08-30 02:24:27,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2023-08-30 02:24:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 02:24:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 02:24:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2023-08-30 02:24:27,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679783950617284 [2023-08-30 02:24:27,690 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2023-08-30 02:24:27,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2023-08-30 02:24:27,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:27,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2023-08-30 02:24:27,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:27,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:27,697 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:27,697 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1213 transitions. [2023-08-30 02:24:27,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2023-08-30 02:24:27,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2023-08-30 02:24:27,739 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2023-08-30 02:24:27,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2023-08-30 02:24:27,740 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2023-08-30 02:24:27,740 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2023-08-30 02:24:27,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:27,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:27,740 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:27,752 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 (17)] Ended with exit code 0 [2023-08-30 02:24:27,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:27,950 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:27,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:27,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1570592883, now seen corresponding path program 9 times [2023-08-30 02:24:27,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:27,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316284256] [2023-08-30 02:24:27,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:24:27,951 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 02:24:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:27,952 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:27,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 02:24:28,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 02:24:28,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:28,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:24:28,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:28,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:28,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:28,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316284256] [2023-08-30 02:24:28,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316284256] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:28,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:28,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:24:28,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553890765] [2023-08-30 02:24:28,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:28,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:24:28,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:28,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:24:28,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:24:28,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:28,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:28,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:28,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:28,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:29,968 INFO L130 PetriNetUnfolder]: 488/891 cut-off events. [2023-08-30 02:24:29,969 INFO L131 PetriNetUnfolder]: For 43601/43601 co-relation queries the response was YES. [2023-08-30 02:24:29,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 891 events. 488/891 cut-off events. For 43601/43601 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4317 event pairs, 88 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 7049. Up to 401 conditions per place. [2023-08-30 02:24:29,979 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 99 selfloop transitions, 63 changer transitions 43/205 dead transitions. [2023-08-30 02:24:29,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 3412 flow [2023-08-30 02:24:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 02:24:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 02:24:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1610 transitions. [2023-08-30 02:24:29,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46585648148148145 [2023-08-30 02:24:29,984 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1610 transitions. [2023-08-30 02:24:29,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1610 transitions. [2023-08-30 02:24:29,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:29,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1610 transitions. [2023-08-30 02:24:29,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.08333333333333) internal successors, (1610), 24 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:29,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:29,995 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:29,995 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1610 transitions. [2023-08-30 02:24:29,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 3412 flow [2023-08-30 02:24:30,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 205 transitions, 2935 flow, removed 222 selfloop flow, removed 8 redundant places. [2023-08-30 02:24:30,060 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 2082 flow [2023-08-30 02:24:30,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2082, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2023-08-30 02:24:30,061 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2023-08-30 02:24:30,061 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 2082 flow [2023-08-30 02:24:30,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:30,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:30,062 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:30,075 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 (18)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:30,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:30,273 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:30,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash -925720759, now seen corresponding path program 10 times [2023-08-30 02:24:30,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:30,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570075450] [2023-08-30 02:24:30,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:24:30,275 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 02:24:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:30,276 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:30,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-30 02:24:30,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:24:30,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:30,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:24:30,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:30,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:30,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570075450] [2023-08-30 02:24:30,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570075450] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:30,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:30,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:24:30,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593732563] [2023-08-30 02:24:30,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:30,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:24:30,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:24:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:24:30,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:30,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:30,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:30,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:30,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:33,226 INFO L130 PetriNetUnfolder]: 692/1267 cut-off events. [2023-08-30 02:24:33,227 INFO L131 PetriNetUnfolder]: For 76869/76869 co-relation queries the response was YES. [2023-08-30 02:24:33,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1267 events. 692/1267 cut-off events. For 76869/76869 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6365 event pairs, 38 based on Foata normal form. 32/1299 useless extension candidates. Maximal degree in co-relation 12171. Up to 444 conditions per place. [2023-08-30 02:24:33,243 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 110 selfloop transitions, 147 changer transitions 27/284 dead transitions. [2023-08-30 02:24:33,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 5875 flow [2023-08-30 02:24:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 02:24:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 02:24:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2344 transitions. [2023-08-30 02:24:33,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650793650793651 [2023-08-30 02:24:33,250 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2344 transitions. [2023-08-30 02:24:33,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2344 transitions. [2023-08-30 02:24:33,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:33,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2344 transitions. [2023-08-30 02:24:33,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 66.97142857142858) internal successors, (2344), 35 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:33,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:33,263 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:33,264 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 2082 flow. Second operand 35 states and 2344 transitions. [2023-08-30 02:24:33,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 5875 flow [2023-08-30 02:24:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 5148 flow, removed 341 selfloop flow, removed 10 redundant places. [2023-08-30 02:24:33,363 INFO L231 Difference]: Finished difference. Result has 196 places, 191 transitions, 4139 flow [2023-08-30 02:24:33,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4139, PETRI_PLACES=196, PETRI_TRANSITIONS=191} [2023-08-30 02:24:33,364 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2023-08-30 02:24:33,364 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 191 transitions, 4139 flow [2023-08-30 02:24:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:33,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:33,365 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:33,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-08-30 02:24:33,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:33,566 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:33,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash -925004659, now seen corresponding path program 11 times [2023-08-30 02:24:33,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213881977] [2023-08-30 02:24:33,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:24:33,567 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 02:24:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:33,568 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:33,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-30 02:24:33,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 02:24:33,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:33,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:24:33,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:33,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:34,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213881977] [2023-08-30 02:24:34,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213881977] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:34,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:34,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:24:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190764386] [2023-08-30 02:24:34,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:34,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:24:34,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:34,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:24:34,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:24:34,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:34,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 191 transitions, 4139 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:34,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:34,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:34,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:35,919 INFO L130 PetriNetUnfolder]: 756/1383 cut-off events. [2023-08-30 02:24:35,920 INFO L131 PetriNetUnfolder]: For 116743/116743 co-relation queries the response was YES. [2023-08-30 02:24:35,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 1383 events. 756/1383 cut-off events. For 116743/116743 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7128 event pairs, 30 based on Foata normal form. 40/1423 useless extension candidates. Maximal degree in co-relation 14476. Up to 492 conditions per place. [2023-08-30 02:24:35,967 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 84 selfloop transitions, 162 changer transitions 54/300 dead transitions. [2023-08-30 02:24:35,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 300 transitions, 6668 flow [2023-08-30 02:24:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 02:24:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 02:24:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2014 transitions. [2023-08-30 02:24:35,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46620370370370373 [2023-08-30 02:24:35,972 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2014 transitions. [2023-08-30 02:24:35,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2014 transitions. [2023-08-30 02:24:35,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:35,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2014 transitions. [2023-08-30 02:24:35,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.13333333333334) internal successors, (2014), 30 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:35,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:35,991 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:35,991 INFO L175 Difference]: Start difference. First operand has 196 places, 191 transitions, 4139 flow. Second operand 30 states and 2014 transitions. [2023-08-30 02:24:35,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 300 transitions, 6668 flow [2023-08-30 02:24:36,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 300 transitions, 4781 flow, removed 891 selfloop flow, removed 17 redundant places. [2023-08-30 02:24:36,273 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 3497 flow [2023-08-30 02:24:36,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3497, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2023-08-30 02:24:36,274 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 188 predicate places. [2023-08-30 02:24:36,274 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 3497 flow [2023-08-30 02:24:36,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:36,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:36,275 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:36,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:36,485 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:36,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2014607281, now seen corresponding path program 12 times [2023-08-30 02:24:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985460889] [2023-08-30 02:24:36,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:24:36,486 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 02:24:36,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:36,488 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:36,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 02:24:36,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 02:24:36,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:36,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:24:36,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:36,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:24:36,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:36,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985460889] [2023-08-30 02:24:36,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985460889] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:36,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:36,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:24:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111576143] [2023-08-30 02:24:36,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:36,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:24:36,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:24:36,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:24:37,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:37,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 3497 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:37,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:37,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:37,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:38,572 INFO L130 PetriNetUnfolder]: 840/1523 cut-off events. [2023-08-30 02:24:38,573 INFO L131 PetriNetUnfolder]: For 112483/112483 co-relation queries the response was YES. [2023-08-30 02:24:38,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14600 conditions, 1523 events. 840/1523 cut-off events. For 112483/112483 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7801 event pairs, 54 based on Foata normal form. 28/1551 useless extension candidates. Maximal degree in co-relation 14519. Up to 424 conditions per place. [2023-08-30 02:24:38,618 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 96 selfloop transitions, 176 changer transitions 50/322 dead transitions. [2023-08-30 02:24:38,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 322 transitions, 6365 flow [2023-08-30 02:24:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 02:24:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 02:24:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1880 transitions. [2023-08-30 02:24:38,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-08-30 02:24:38,623 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1880 transitions. [2023-08-30 02:24:38,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1880 transitions. [2023-08-30 02:24:38,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:38,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1880 transitions. [2023-08-30 02:24:38,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 67.14285714285714) internal successors, (1880), 28 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:38,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:38,634 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:38,634 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 3497 flow. Second operand 28 states and 1880 transitions. [2023-08-30 02:24:38,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 322 transitions, 6365 flow [2023-08-30 02:24:38,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 5818 flow, removed 215 selfloop flow, removed 19 redundant places. [2023-08-30 02:24:38,858 INFO L231 Difference]: Finished difference. Result has 236 places, 232 transitions, 4493 flow [2023-08-30 02:24:38,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4493, PETRI_PLACES=236, PETRI_TRANSITIONS=232} [2023-08-30 02:24:38,858 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-08-30 02:24:38,859 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 232 transitions, 4493 flow [2023-08-30 02:24:38,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:38,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:38,859 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:38,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-08-30 02:24:39,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:39,069 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:39,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash 790771329, now seen corresponding path program 13 times [2023-08-30 02:24:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403756391] [2023-08-30 02:24:39,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:24:39,070 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 02:24:39,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:39,071 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:39,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 02:24:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:39,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:24:39,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:39,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:40,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:40,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403756391] [2023-08-30 02:24:40,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403756391] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:40,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:24:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416371684] [2023-08-30 02:24:40,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:40,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:24:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:24:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:24:40,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:40,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 232 transitions, 4493 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:40,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:40,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:40,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:46,628 INFO L130 PetriNetUnfolder]: 1008/1803 cut-off events. [2023-08-30 02:24:46,628 INFO L131 PetriNetUnfolder]: For 197782/197782 co-relation queries the response was YES. [2023-08-30 02:24:46,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20835 conditions, 1803 events. 1008/1803 cut-off events. For 197782/197782 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8652 event pairs, 12 based on Foata normal form. 56/1859 useless extension candidates. Maximal degree in co-relation 20743. Up to 536 conditions per place. [2023-08-30 02:24:46,652 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 101 selfloop transitions, 238 changer transitions 106/445 dead transitions. [2023-08-30 02:24:46,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 445 transitions, 10971 flow [2023-08-30 02:24:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-08-30 02:24:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-08-30 02:24:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 3749 transitions. [2023-08-30 02:24:46,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46490575396825395 [2023-08-30 02:24:46,658 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 3749 transitions. [2023-08-30 02:24:46,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 3749 transitions. [2023-08-30 02:24:46,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:46,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 3749 transitions. [2023-08-30 02:24:46,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 66.94642857142857) internal successors, (3749), 56 states have internal predecessors, (3749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:46,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 144.0) internal successors, (8208), 57 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:46,703 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 144.0) internal successors, (8208), 57 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:46,703 INFO L175 Difference]: Start difference. First operand has 236 places, 232 transitions, 4493 flow. Second operand 56 states and 3749 transitions. [2023-08-30 02:24:46,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 445 transitions, 10971 flow [2023-08-30 02:24:46,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 445 transitions, 10291 flow, removed 313 selfloop flow, removed 9 redundant places. [2023-08-30 02:24:46,990 INFO L231 Difference]: Finished difference. Result has 310 places, 274 transitions, 6723 flow [2023-08-30 02:24:46,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6723, PETRI_PLACES=310, PETRI_TRANSITIONS=274} [2023-08-30 02:24:46,991 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 286 predicate places. [2023-08-30 02:24:46,991 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 274 transitions, 6723 flow [2023-08-30 02:24:46,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:46,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:46,992 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:46,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:47,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:47,193 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:47,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1030732913, now seen corresponding path program 14 times [2023-08-30 02:24:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148883202] [2023-08-30 02:24:47,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:24:47,194 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 02:24:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:47,194 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:47,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-30 02:24:47,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:24:47,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:47,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:24:47,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:47,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:48,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:48,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148883202] [2023-08-30 02:24:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148883202] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:48,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:24:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444199687] [2023-08-30 02:24:48,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:48,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:24:48,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:24:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:24:48,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:48,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 274 transitions, 6723 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:48,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:48,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:48,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:51,350 INFO L130 PetriNetUnfolder]: 1088/1963 cut-off events. [2023-08-30 02:24:51,350 INFO L131 PetriNetUnfolder]: For 381862/381862 co-relation queries the response was YES. [2023-08-30 02:24:51,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28381 conditions, 1963 events. 1088/1963 cut-off events. For 381862/381862 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9534 event pairs, 403 based on Foata normal form. 64/2027 useless extension candidates. Maximal degree in co-relation 28261. Up to 1641 conditions per place. [2023-08-30 02:24:51,372 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 290 selfloop transitions, 39 changer transitions 59/388 dead transitions. [2023-08-30 02:24:51,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 388 transitions, 11609 flow [2023-08-30 02:24:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 02:24:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 02:24:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2139 transitions. [2023-08-30 02:24:51,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641927083333333 [2023-08-30 02:24:51,376 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2139 transitions. [2023-08-30 02:24:51,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2139 transitions. [2023-08-30 02:24:51,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:51,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2139 transitions. [2023-08-30 02:24:51,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 66.84375) internal successors, (2139), 32 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:51,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 144.0) internal successors, (4752), 33 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:51,384 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 144.0) internal successors, (4752), 33 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:51,384 INFO L175 Difference]: Start difference. First operand has 310 places, 274 transitions, 6723 flow. Second operand 32 states and 2139 transitions. [2023-08-30 02:24:51,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 388 transitions, 11609 flow [2023-08-30 02:24:51,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 388 transitions, 9280 flow, removed 1020 selfloop flow, removed 27 redundant places. [2023-08-30 02:24:51,997 INFO L231 Difference]: Finished difference. Result has 334 places, 294 transitions, 6306 flow [2023-08-30 02:24:51,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6306, PETRI_PLACES=334, PETRI_TRANSITIONS=294} [2023-08-30 02:24:51,997 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 310 predicate places. [2023-08-30 02:24:51,998 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 294 transitions, 6306 flow [2023-08-30 02:24:51,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:51,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:51,998 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:52,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-08-30 02:24:52,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:52,201 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:52,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash -229469181, now seen corresponding path program 15 times [2023-08-30 02:24:52,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369405780] [2023-08-30 02:24:52,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:24:52,201 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 02:24:52,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:52,202 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:52,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 02:24:52,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 02:24:52,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:52,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:24:52,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:24:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:52,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:24:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:53,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:24:53,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369405780] [2023-08-30 02:24:53,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369405780] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:24:53,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:24:53,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:24:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872252020] [2023-08-30 02:24:53,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:24:53,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:24:53,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:24:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:24:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:24:53,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:24:53,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 294 transitions, 6306 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:53,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:53,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:24:53,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:58,590 INFO L130 PetriNetUnfolder]: 1396/2571 cut-off events. [2023-08-30 02:24:58,591 INFO L131 PetriNetUnfolder]: For 697343/697343 co-relation queries the response was YES. [2023-08-30 02:24:58,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41070 conditions, 2571 events. 1396/2571 cut-off events. For 697343/697343 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13507 event pairs, 363 based on Foata normal form. 64/2635 useless extension candidates. Maximal degree in co-relation 40934. Up to 1456 conditions per place. [2023-08-30 02:24:58,623 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 327 selfloop transitions, 130 changer transitions 59/516 dead transitions. [2023-08-30 02:24:58,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 516 transitions, 15035 flow [2023-08-30 02:24:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-30 02:24:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-30 02:24:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3267 transitions. [2023-08-30 02:24:58,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630102040816326 [2023-08-30 02:24:58,630 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3267 transitions. [2023-08-30 02:24:58,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3267 transitions. [2023-08-30 02:24:58,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:58,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3267 transitions. [2023-08-30 02:24:58,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 66.6734693877551) internal successors, (3267), 49 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:58,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:58,643 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:58,644 INFO L175 Difference]: Start difference. First operand has 334 places, 294 transitions, 6306 flow. Second operand 49 states and 3267 transitions. [2023-08-30 02:24:58,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 516 transitions, 15035 flow [2023-08-30 02:24:59,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 516 transitions, 13607 flow, removed 695 selfloop flow, removed 11 redundant places. [2023-08-30 02:24:59,705 INFO L231 Difference]: Finished difference. Result has 398 places, 359 transitions, 8804 flow [2023-08-30 02:24:59,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=8804, PETRI_PLACES=398, PETRI_TRANSITIONS=359} [2023-08-30 02:24:59,706 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 374 predicate places. [2023-08-30 02:24:59,706 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 359 transitions, 8804 flow [2023-08-30 02:24:59,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:59,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:59,707 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:59,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-30 02:24:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:24:59,917 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:24:59,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1192502667, now seen corresponding path program 16 times [2023-08-30 02:24:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:24:59,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118527649] [2023-08-30 02:24:59,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:24:59,918 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 02:24:59,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:24:59,919 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:24:59,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 02:24:59,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:24:59,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:24:59,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:24:59,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:25:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:25:00,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:25:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:25:00,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:25:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118527649] [2023-08-30 02:25:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118527649] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:25:00,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:25:00,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:25:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460815548] [2023-08-30 02:25:00,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:25:00,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:25:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:25:00,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:25:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:25:01,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:25:01,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 359 transitions, 8804 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:01,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:25:01,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:25:01,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:25:09,324 INFO L130 PetriNetUnfolder]: 2332/4355 cut-off events. [2023-08-30 02:25:09,324 INFO L131 PetriNetUnfolder]: For 1681131/1681131 co-relation queries the response was YES. [2023-08-30 02:25:09,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81980 conditions, 4355 events. 2332/4355 cut-off events. For 1681131/1681131 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 26278 event pairs, 153 based on Foata normal form. 72/4427 useless extension candidates. Maximal degree in co-relation 81817. Up to 1588 conditions per place. [2023-08-30 02:25:09,396 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 278 selfloop transitions, 487 changer transitions 69/834 dead transitions. [2023-08-30 02:25:09,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 834 transitions, 28072 flow [2023-08-30 02:25:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 02:25:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 02:25:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4665 transitions. [2023-08-30 02:25:09,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46279761904761907 [2023-08-30 02:25:09,404 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4665 transitions. [2023-08-30 02:25:09,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4665 transitions. [2023-08-30 02:25:09,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:25:09,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4665 transitions. [2023-08-30 02:25:09,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 66.64285714285714) internal successors, (4665), 70 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:09,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:09,423 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:09,424 INFO L175 Difference]: Start difference. First operand has 398 places, 359 transitions, 8804 flow. Second operand 70 states and 4665 transitions. [2023-08-30 02:25:09,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 834 transitions, 28072 flow [2023-08-30 02:25:11,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 834 transitions, 25143 flow, removed 1444 selfloop flow, removed 12 redundant places. [2023-08-30 02:25:11,938 INFO L231 Difference]: Finished difference. Result has 485 places, 623 transitions, 20447 flow [2023-08-30 02:25:11,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=20447, PETRI_PLACES=485, PETRI_TRANSITIONS=623} [2023-08-30 02:25:11,939 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 461 predicate places. [2023-08-30 02:25:11,939 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 623 transitions, 20447 flow [2023-08-30 02:25:11,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:11,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:25:11,939 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:25:11,946 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 (25)] Ended with exit code 0 [2023-08-30 02:25:12,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:25:12,140 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:25:12,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:25:12,140 INFO L85 PathProgramCache]: Analyzing trace with hash -314903001, now seen corresponding path program 17 times [2023-08-30 02:25:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:25:12,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781991711] [2023-08-30 02:25:12,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:25:12,141 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 02:25:12,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:25:12,142 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:25:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-30 02:25:12,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-30 02:25:12,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:25:12,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:25:12,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:25:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:25:12,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:25:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:25:13,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:25:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781991711] [2023-08-30 02:25:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781991711] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:25:13,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:25:13,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:25:13,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787222549] [2023-08-30 02:25:13,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:25:13,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:25:13,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:25:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:25:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:25:13,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:25:13,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 623 transitions, 20447 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:13,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:25:13,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:25:13,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:25:25,444 INFO L130 PetriNetUnfolder]: 2904/5379 cut-off events. [2023-08-30 02:25:25,445 INFO L131 PetriNetUnfolder]: For 3037348/3037348 co-relation queries the response was YES. [2023-08-30 02:25:25,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121235 conditions, 5379 events. 2904/5379 cut-off events. For 3037348/3037348 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32949 event pairs, 53 based on Foata normal form. 104/5483 useless extension candidates. Maximal degree in co-relation 121041. Up to 2040 conditions per place. [2023-08-30 02:25:25,530 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 269 selfloop transitions, 680 changer transitions 51/1000 dead transitions. [2023-08-30 02:25:25,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1000 transitions, 43094 flow [2023-08-30 02:25:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-08-30 02:25:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-08-30 02:25:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 5017 transitions. [2023-08-30 02:25:25,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464537037037037 [2023-08-30 02:25:25,535 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 5017 transitions. [2023-08-30 02:25:25,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 5017 transitions. [2023-08-30 02:25:25,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:25:25,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 5017 transitions. [2023-08-30 02:25:25,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 66.89333333333333) internal successors, (5017), 75 states have internal predecessors, (5017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:25,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:25,550 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:25,550 INFO L175 Difference]: Start difference. First operand has 485 places, 623 transitions, 20447 flow. Second operand 75 states and 5017 transitions. [2023-08-30 02:25:25,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1000 transitions, 43094 flow [2023-08-30 02:25:30,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 1000 transitions, 29040 flow, removed 6947 selfloop flow, removed 26 redundant places. [2023-08-30 02:25:30,703 INFO L231 Difference]: Finished difference. Result has 547 places, 783 transitions, 23132 flow [2023-08-30 02:25:30,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=10494, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=516, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=23132, PETRI_PLACES=547, PETRI_TRANSITIONS=783} [2023-08-30 02:25:30,705 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 523 predicate places. [2023-08-30 02:25:30,705 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 783 transitions, 23132 flow [2023-08-30 02:25:30,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:30,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:25:30,705 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:25:30,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-08-30 02:25:30,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:25:30,906 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:25:30,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:25:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash -314878821, now seen corresponding path program 18 times [2023-08-30 02:25:30,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:25:30,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674516915] [2023-08-30 02:25:30,907 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:25:30,907 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 02:25:30,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:25:30,908 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:25:30,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-30 02:25:30,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-08-30 02:25:30,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:25:30,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:25:30,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:25:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:25:31,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:25:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:25:31,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:25:31,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674516915] [2023-08-30 02:25:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674516915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:25:31,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:25:31,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:25:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175342464] [2023-08-30 02:25:31,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:25:31,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:25:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:25:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:25:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:25:32,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:25:32,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 783 transitions, 23132 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:32,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:25:32,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:25:32,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:25:41,711 INFO L130 PetriNetUnfolder]: 3388/6243 cut-off events. [2023-08-30 02:25:41,711 INFO L131 PetriNetUnfolder]: For 3924993/3924993 co-relation queries the response was YES. [2023-08-30 02:25:41,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127181 conditions, 6243 events. 3388/6243 cut-off events. For 3924993/3924993 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 38988 event pairs, 41 based on Foata normal form. 116/6359 useless extension candidates. Maximal degree in co-relation 126970. Up to 2132 conditions per place. [2023-08-30 02:25:41,897 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 202 selfloop transitions, 805 changer transitions 110/1117 dead transitions. [2023-08-30 02:25:41,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 1117 transitions, 38137 flow [2023-08-30 02:25:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-30 02:25:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-30 02:25:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3883 transitions. [2023-08-30 02:25:41,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46491858237547895 [2023-08-30 02:25:41,903 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3883 transitions. [2023-08-30 02:25:41,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3883 transitions. [2023-08-30 02:25:41,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:25:41,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3883 transitions. [2023-08-30 02:25:41,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 66.94827586206897) internal successors, (3883), 58 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:41,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 144.0) internal successors, (8496), 59 states have internal predecessors, (8496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:41,918 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 144.0) internal successors, (8496), 59 states have internal predecessors, (8496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:41,918 INFO L175 Difference]: Start difference. First operand has 547 places, 783 transitions, 23132 flow. Second operand 58 states and 3883 transitions. [2023-08-30 02:25:41,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 1117 transitions, 38137 flow [2023-08-30 02:25:49,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1117 transitions, 23757 flow, removed 6787 selfloop flow, removed 34 redundant places. [2023-08-30 02:25:49,787 INFO L231 Difference]: Finished difference. Result has 573 places, 917 transitions, 17319 flow [2023-08-30 02:25:49,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=12607, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=17319, PETRI_PLACES=573, PETRI_TRANSITIONS=917} [2023-08-30 02:25:49,788 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 549 predicate places. [2023-08-30 02:25:49,789 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 917 transitions, 17319 flow [2023-08-30 02:25:49,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:49,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:25:49,789 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:25:49,799 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 (27)] Ended with exit code 0 [2023-08-30 02:25:49,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:25:49,999 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:25:49,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:25:50,000 INFO L85 PathProgramCache]: Analyzing trace with hash 405493581, now seen corresponding path program 19 times [2023-08-30 02:25:50,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:25:50,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334301671] [2023-08-30 02:25:50,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:25:50,000 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 02:25:50,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:25:50,001 INFO L229 MonitoredProcess]: Starting monitored process 28 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 02:25:50,002 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 (28)] Waiting until timeout for monitored process [2023-08-30 02:25:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:25:50,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 02:25:50,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:25:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:25:50,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:25:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:25:52,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:25:52,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334301671] [2023-08-30 02:25:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334301671] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:25:52,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:25:52,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-30 02:25:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254184908] [2023-08-30 02:25:52,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:25:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 02:25:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:25:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 02:25:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=2881, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 02:25:53,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:25:53,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 917 transitions, 17319 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:25:53,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:25:53,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:25:53,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:26:07,297 INFO L130 PetriNetUnfolder]: 3716/6899 cut-off events. [2023-08-30 02:26:07,297 INFO L131 PetriNetUnfolder]: For 4191633/4191633 co-relation queries the response was YES. [2023-08-30 02:26:07,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121025 conditions, 6899 events. 3716/6899 cut-off events. For 4191633/4191633 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 44257 event pairs, 1305 based on Foata normal form. 56/6955 useless extension candidates. Maximal degree in co-relation 120814. Up to 5013 conditions per place. [2023-08-30 02:26:07,424 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 854 selfloop transitions, 243 changer transitions 123/1220 dead transitions. [2023-08-30 02:26:07,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 1220 transitions, 30192 flow [2023-08-30 02:26:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-30 02:26:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-30 02:26:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4256 transitions. [2023-08-30 02:26:07,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2023-08-30 02:26:07,428 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4256 transitions. [2023-08-30 02:26:07,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4256 transitions. [2023-08-30 02:26:07,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:26:07,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4256 transitions. [2023-08-30 02:26:07,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 66.5) internal successors, (4256), 64 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:07,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 144.0) internal successors, (9360), 65 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:07,440 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 144.0) internal successors, (9360), 65 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:07,440 INFO L175 Difference]: Start difference. First operand has 573 places, 917 transitions, 17319 flow. Second operand 64 states and 4256 transitions. [2023-08-30 02:26:07,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 1220 transitions, 30192 flow [2023-08-30 02:26:14,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1220 transitions, 28495 flow, removed 493 selfloop flow, removed 28 redundant places. [2023-08-30 02:26:14,462 INFO L231 Difference]: Finished difference. Result has 630 places, 1000 transitions, 19551 flow [2023-08-30 02:26:14,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=15698, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=19551, PETRI_PLACES=630, PETRI_TRANSITIONS=1000} [2023-08-30 02:26:14,463 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 606 predicate places. [2023-08-30 02:26:14,463 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1000 transitions, 19551 flow [2023-08-30 02:26:14,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:14,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:26:14,464 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:26:14,471 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 (28)] Forceful destruction successful, exit code 0 [2023-08-30 02:26:14,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 02:26:14,664 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:26:14,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:26:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1316042347, now seen corresponding path program 20 times [2023-08-30 02:26:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:26:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45131776] [2023-08-30 02:26:14,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:26:14,665 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 02:26:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:26:14,666 INFO L229 MonitoredProcess]: Starting monitored process 29 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 02:26:14,667 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 (29)] Waiting until timeout for monitored process [2023-08-30 02:26:14,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:26:14,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:26:14,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 02:26:14,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:26:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:26:15,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:26:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:26:17,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:26:17,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45131776] [2023-08-30 02:26:17,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45131776] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:26:17,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:26:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-30 02:26:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096055709] [2023-08-30 02:26:17,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:26:17,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 02:26:17,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:26:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 02:26:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2917, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 02:26:18,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:26:18,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 1000 transitions, 19551 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:18,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:26:18,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:26:18,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:26:40,962 INFO L130 PetriNetUnfolder]: 4524/8499 cut-off events. [2023-08-30 02:26:40,962 INFO L131 PetriNetUnfolder]: For 5851504/5851504 co-relation queries the response was YES. [2023-08-30 02:26:41,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163947 conditions, 8499 events. 4524/8499 cut-off events. For 5851504/5851504 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 56117 event pairs, 916 based on Foata normal form. 56/8555 useless extension candidates. Maximal degree in co-relation 163713. Up to 3465 conditions per place. [2023-08-30 02:26:41,143 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 775 selfloop transitions, 636 changer transitions 117/1528 dead transitions. [2023-08-30 02:26:41,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 1528 transitions, 44907 flow [2023-08-30 02:26:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-08-30 02:26:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-08-30 02:26:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 6574 transitions. [2023-08-30 02:26:41,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46113916947250283 [2023-08-30 02:26:41,151 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 6574 transitions. [2023-08-30 02:26:41,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 6574 transitions. [2023-08-30 02:26:41,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:26:41,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 6574 transitions. [2023-08-30 02:26:41,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 66.4040404040404) internal successors, (6574), 99 states have internal predecessors, (6574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:41,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 144.0) internal successors, (14400), 100 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:41,176 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 144.0) internal successors, (14400), 100 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:41,176 INFO L175 Difference]: Start difference. First operand has 630 places, 1000 transitions, 19551 flow. Second operand 99 states and 6574 transitions. [2023-08-30 02:26:41,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 728 places, 1528 transitions, 44907 flow [2023-08-30 02:26:54,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 1528 transitions, 42364 flow, removed 1167 selfloop flow, removed 22 redundant places. [2023-08-30 02:26:54,411 INFO L231 Difference]: Finished difference. Result has 729 places, 1210 transitions, 29518 flow [2023-08-30 02:26:54,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=17738, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=493, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=29518, PETRI_PLACES=729, PETRI_TRANSITIONS=1210} [2023-08-30 02:26:54,412 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 705 predicate places. [2023-08-30 02:26:54,412 INFO L495 AbstractCegarLoop]: Abstraction has has 729 places, 1210 transitions, 29518 flow [2023-08-30 02:26:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:54,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:26:54,413 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:26:54,421 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 (29)] Ended with exit code 0 [2023-08-30 02:26:54,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 02:26:54,617 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:26:54,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:26:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1060664077, now seen corresponding path program 21 times [2023-08-30 02:26:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:26:54,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534063348] [2023-08-30 02:26:54,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:26:54,618 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 02:26:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:26:54,618 INFO L229 MonitoredProcess]: Starting monitored process 30 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 02:26:54,619 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 (30)] Waiting until timeout for monitored process [2023-08-30 02:26:54,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-08-30 02:26:54,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:26:54,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 02:26:54,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:26:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:26:55,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:26:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:26:57,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:26:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534063348] [2023-08-30 02:26:57,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534063348] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:26:57,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:26:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-30 02:26:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250302946] [2023-08-30 02:26:57,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:26:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 02:26:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:26:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 02:26:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2943, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 02:26:58,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:26:58,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 1210 transitions, 29518 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:26:58,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:26:58,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:26:58,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:27:33,848 INFO L130 PetriNetUnfolder]: 5308/10051 cut-off events. [2023-08-30 02:27:33,848 INFO L131 PetriNetUnfolder]: For 9632753/9632753 co-relation queries the response was YES. [2023-08-30 02:27:34,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224558 conditions, 10051 events. 5308/10051 cut-off events. For 9632753/9632753 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 68635 event pairs, 574 based on Foata normal form. 56/10107 useless extension candidates. Maximal degree in co-relation 224300. Up to 3400 conditions per place. [2023-08-30 02:27:34,061 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 717 selfloop transitions, 1008 changer transitions 125/1850 dead transitions. [2023-08-30 02:27:34,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 844 places, 1850 transitions, 62454 flow [2023-08-30 02:27:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-08-30 02:27:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-08-30 02:27:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 8302 transitions. [2023-08-30 02:27:34,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612222222222222 [2023-08-30 02:27:34,068 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 8302 transitions. [2023-08-30 02:27:34,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 8302 transitions. [2023-08-30 02:27:34,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:27:34,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 8302 transitions. [2023-08-30 02:27:34,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 66.416) internal successors, (8302), 125 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:27:34,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 144.0) internal successors, (18144), 126 states have internal predecessors, (18144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:27:34,093 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 144.0) internal successors, (18144), 126 states have internal predecessors, (18144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:27:34,093 INFO L175 Difference]: Start difference. First operand has 729 places, 1210 transitions, 29518 flow. Second operand 125 states and 8302 transitions. [2023-08-30 02:27:34,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 844 places, 1850 transitions, 62454 flow [2023-08-30 02:27:56,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 1850 transitions, 55418 flow, removed 3308 selfloop flow, removed 32 redundant places. [2023-08-30 02:27:56,318 INFO L231 Difference]: Finished difference. Result has 852 places, 1440 transitions, 38666 flow [2023-08-30 02:27:56,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=21496, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=828, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=125, PETRI_FLOW=38666, PETRI_PLACES=852, PETRI_TRANSITIONS=1440} [2023-08-30 02:27:56,320 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 828 predicate places. [2023-08-30 02:27:56,320 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 1440 transitions, 38666 flow [2023-08-30 02:27:56,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:27:56,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:27:56,321 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:27:56,331 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 (30)] Forceful destruction successful, exit code 0 [2023-08-30 02:27:56,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 02:27:56,525 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:27:56,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:27:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1330824259, now seen corresponding path program 22 times [2023-08-30 02:27:56,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:27:56,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175169820] [2023-08-30 02:27:56,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:27:56,526 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 02:27:56,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:27:56,527 INFO L229 MonitoredProcess]: Starting monitored process 31 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 02:27:56,528 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 (31)] Waiting until timeout for monitored process [2023-08-30 02:27:56,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:27:56,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:27:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 02:27:56,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:27:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:27:57,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:27:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:27:58,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:27:58,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175169820] [2023-08-30 02:27:58,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175169820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:27:58,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:27:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-30 02:27:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933661227] [2023-08-30 02:27:58,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:27:58,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 02:27:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:27:58,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 02:27:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2943, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 02:27:59,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:27:59,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 1440 transitions, 38666 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:27:59,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:27:59,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:27:59,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:28:56,401 INFO L130 PetriNetUnfolder]: 5892/11171 cut-off events. [2023-08-30 02:28:56,402 INFO L131 PetriNetUnfolder]: For 15394574/15394574 co-relation queries the response was YES. [2023-08-30 02:28:56,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287963 conditions, 11171 events. 5892/11171 cut-off events. For 15394574/15394574 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 77702 event pairs, 162 based on Foata normal form. 96/11267 useless extension candidates. Maximal degree in co-relation 287672. Up to 3816 conditions per place. [2023-08-30 02:28:56,681 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 536 selfloop transitions, 1392 changer transitions 141/2069 dead transitions. [2023-08-30 02:28:56,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 972 places, 2069 transitions, 78283 flow [2023-08-30 02:28:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-08-30 02:28:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2023-08-30 02:28:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 9845 transitions. [2023-08-30 02:28:56,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619463213213213 [2023-08-30 02:28:56,689 INFO L72 ComplementDD]: Start complementDD. Operand 148 states and 9845 transitions. [2023-08-30 02:28:56,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 9845 transitions. [2023-08-30 02:28:56,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:28:56,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 148 states and 9845 transitions. [2023-08-30 02:28:56,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 149 states, 148 states have (on average 66.52027027027027) internal successors, (9845), 148 states have internal predecessors, (9845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:28:56,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 149 states, 149 states have (on average 144.0) internal successors, (21456), 149 states have internal predecessors, (21456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:28:56,715 INFO L81 ComplementDD]: Finished complementDD. Result has 149 states, 149 states have (on average 144.0) internal successors, (21456), 149 states have internal predecessors, (21456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:28:56,715 INFO L175 Difference]: Start difference. First operand has 852 places, 1440 transitions, 38666 flow. Second operand 148 states and 9845 transitions. [2023-08-30 02:28:56,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 972 places, 2069 transitions, 78283 flow [2023-08-30 02:29:36,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 930 places, 2069 transitions, 69557 flow, removed 4145 selfloop flow, removed 42 redundant places. [2023-08-30 02:29:36,174 INFO L231 Difference]: Finished difference. Result has 979 places, 1612 transitions, 48883 flow [2023-08-30 02:29:36,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=26326, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=148, PETRI_FLOW=48883, PETRI_PLACES=979, PETRI_TRANSITIONS=1612} [2023-08-30 02:29:36,177 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 955 predicate places. [2023-08-30 02:29:36,177 INFO L495 AbstractCegarLoop]: Abstraction has has 979 places, 1612 transitions, 48883 flow [2023-08-30 02:29:36,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:29:36,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:29:36,178 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:29:36,193 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 (31)] Forceful destruction successful, exit code 0 [2023-08-30 02:29:36,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 02:29:36,388 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:29:36,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:29:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1456761549, now seen corresponding path program 23 times [2023-08-30 02:29:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:29:36,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106901448] [2023-08-30 02:29:36,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:29:36,389 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 02:29:36,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:29:36,390 INFO L229 MonitoredProcess]: Starting monitored process 32 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 02:29:36,391 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 (32)] Waiting until timeout for monitored process [2023-08-30 02:29:36,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-30 02:29:36,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:29:36,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 02:29:36,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:29:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:29:36,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:29:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:29:38,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:29:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106901448] [2023-08-30 02:29:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106901448] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:29:38,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:29:38,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-30 02:29:38,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115566681] [2023-08-30 02:29:38,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:29:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 02:29:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:29:38,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 02:29:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2875, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 02:29:39,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:29:39,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 1612 transitions, 48883 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:29:39,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:29:39,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:29:39,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:30:21,537 INFO L130 PetriNetUnfolder]: 5712/10827 cut-off events. [2023-08-30 02:30:21,537 INFO L131 PetriNetUnfolder]: For 20580726/20580726 co-relation queries the response was YES. [2023-08-30 02:30:21,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303749 conditions, 10827 events. 5712/10827 cut-off events. For 20580726/20580726 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 75694 event pairs, 40 based on Foata normal form. 88/10915 useless extension candidates. Maximal degree in co-relation 303427. Up to 3620 conditions per place. [2023-08-30 02:30:21,822 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 313 selfloop transitions, 1399 changer transitions 210/1922 dead transitions. [2023-08-30 02:30:21,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 1922 transitions, 66378 flow [2023-08-30 02:30:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-08-30 02:30:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2023-08-30 02:30:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 7207 transitions. [2023-08-30 02:30:21,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634130658436214 [2023-08-30 02:30:21,827 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 7207 transitions. [2023-08-30 02:30:21,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 7207 transitions. [2023-08-30 02:30:21,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:30:21,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 7207 transitions. [2023-08-30 02:30:21,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 66.73148148148148) internal successors, (7207), 108 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:30:21,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 144.0) internal successors, (15696), 109 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:30:21,844 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 144.0) internal successors, (15696), 109 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:30:21,844 INFO L175 Difference]: Start difference. First operand has 979 places, 1612 transitions, 48883 flow. Second operand 108 states and 7207 transitions. [2023-08-30 02:30:21,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1054 places, 1922 transitions, 66378 flow [2023-08-30 02:31:19,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 978 places, 1922 transitions, 55654 flow, removed 4908 selfloop flow, removed 76 redundant places. [2023-08-30 02:31:19,299 INFO L231 Difference]: Finished difference. Result has 995 places, 1561 transitions, 37047 flow [2023-08-30 02:31:19,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=30578, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=37047, PETRI_PLACES=995, PETRI_TRANSITIONS=1561} [2023-08-30 02:31:19,301 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 971 predicate places. [2023-08-30 02:31:19,301 INFO L495 AbstractCegarLoop]: Abstraction has has 995 places, 1561 transitions, 37047 flow [2023-08-30 02:31:19,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:31:19,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:31:19,302 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:31:19,315 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 (32)] Forceful destruction successful, exit code 0 [2023-08-30 02:31:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 02:31:19,512 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:31:19,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:31:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1252850063, now seen corresponding path program 24 times [2023-08-30 02:31:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:31:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076434961] [2023-08-30 02:31:19,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:31:19,513 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 02:31:19,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:31:19,514 INFO L229 MonitoredProcess]: Starting monitored process 33 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 02:31:19,514 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 (33)] Waiting until timeout for monitored process [2023-08-30 02:31:19,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-08-30 02:31:19,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:31:19,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 02:31:19,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:31:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:31:20,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:31:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:31:22,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:31:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076434961] [2023-08-30 02:31:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076434961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:31:22,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:31:22,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-30 02:31:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260390720] [2023-08-30 02:31:22,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:31:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 02:31:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:31:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 02:31:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2845, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 02:31:22,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:31:22,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 995 places, 1561 transitions, 37047 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:31:22,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:31:22,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:31:22,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:31:46,956 INFO L130 PetriNetUnfolder]: 5916/11167 cut-off events. [2023-08-30 02:31:46,956 INFO L131 PetriNetUnfolder]: For 17709916/17709916 co-relation queries the response was YES. [2023-08-30 02:31:47,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292343 conditions, 11167 events. 5916/11167 cut-off events. For 17709916/17709916 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 77452 event pairs, 20 based on Foata normal form. 68/11235 useless extension candidates. Maximal degree in co-relation 292036. Up to 3664 conditions per place. [2023-08-30 02:31:47,216 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 256 selfloop transitions, 1465 changer transitions 170/1891 dead transitions. [2023-08-30 02:31:47,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 1891 transitions, 63061 flow [2023-08-30 02:31:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-30 02:31:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-30 02:31:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5880 transitions. [2023-08-30 02:31:47,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640151515151515 [2023-08-30 02:31:47,220 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5880 transitions. [2023-08-30 02:31:47,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5880 transitions. [2023-08-30 02:31:47,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:31:47,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5880 transitions. [2023-08-30 02:31:47,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 66.81818181818181) internal successors, (5880), 88 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:31:47,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:31:47,232 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:31:47,232 INFO L175 Difference]: Start difference. First operand has 995 places, 1561 transitions, 37047 flow. Second operand 88 states and 5880 transitions. [2023-08-30 02:31:47,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 1891 transitions, 63061 flow [2023-08-30 02:32:48,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 998 places, 1891 transitions, 57703 flow, removed 1547 selfloop flow, removed 84 redundant places. [2023-08-30 02:32:49,024 INFO L231 Difference]: Finished difference. Result has 1023 places, 1628 transitions, 42877 flow [2023-08-30 02:32:49,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=31805, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=42877, PETRI_PLACES=1023, PETRI_TRANSITIONS=1628} [2023-08-30 02:32:49,028 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 999 predicate places. [2023-08-30 02:32:49,029 INFO L495 AbstractCegarLoop]: Abstraction has has 1023 places, 1628 transitions, 42877 flow [2023-08-30 02:32:49,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:32:49,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:32:49,030 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:32:49,039 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 (33)] Forceful destruction successful, exit code 0 [2023-08-30 02:32:49,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 02:32:49,236 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:32:49,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:32:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1700047031, now seen corresponding path program 25 times [2023-08-30 02:32:49,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:32:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251941543] [2023-08-30 02:32:49,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:32:49,237 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 02:32:49,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:32:49,238 INFO L229 MonitoredProcess]: Starting monitored process 34 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 02:32:49,238 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 (34)] Waiting until timeout for monitored process [2023-08-30 02:32:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:32:49,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:32:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:32:49,556 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 02:32:49,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:32:49,558 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-30 02:32:49,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-30 02:32:49,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-30 02:32:49,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-30 02:32:49,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-30 02:32:49,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-30 02:32:49,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 02:32:49,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 02:32:49,571 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 (34)] Ended with exit code 0 [2023-08-30 02:32:49,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 02:32:49,771 INFO L445 BasicCegarLoop]: Path program histogram: [25, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:32:49,775 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 02:32:49,776 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:32:49,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:32:49 BasicIcfg [2023-08-30 02:32:49,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:32:49,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:32:49,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:32:49,855 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:32:49,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:24:10" (3/4) ... [2023-08-30 02:32:49,858 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:32:49,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:32:49,858 INFO L158 Benchmark]: Toolchain (without parser) took 520333.58ms. Allocated memory was 77.6MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 54.0MB in the beginning and 710.2MB in the end (delta: -656.2MB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2023-08-30 02:32:49,859 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:32:49,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.66ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 20.0kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-30 02:32:49,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.23ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 51.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:32:49,859 INFO L158 Benchmark]: Boogie Preprocessor took 37.26ms. Allocated memory is still 77.6MB. Free memory was 51.8MB in the beginning and 50.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:32:49,859 INFO L158 Benchmark]: RCFGBuilder took 512.92ms. Allocated memory is still 77.6MB. Free memory was 50.1MB in the beginning and 35.7MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 02:32:49,860 INFO L158 Benchmark]: TraceAbstraction took 519253.91ms. Allocated memory was 77.6MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 34.7MB in the beginning and 710.2MB in the end (delta: -675.5MB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2023-08-30 02:32:49,860 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 4.2GB. Free memory is still 710.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:32:49,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.66ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 20.0kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.23ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 51.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.26ms. Allocated memory is still 77.6MB. Free memory was 51.8MB in the beginning and 50.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 512.92ms. Allocated memory is still 77.6MB. Free memory was 50.1MB in the beginning and 35.7MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 519253.91ms. Allocated memory was 77.6MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 34.7MB in the beginning and 710.2MB in the end (delta: -675.5MB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 4.2GB. Free memory is still 710.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 75 PlacesBefore, 24 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 994, independent: 967, independent conditional: 0, independent unconditional: 967, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 657, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 994, independent: 322, independent conditional: 0, independent unconditional: 322, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=47, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, i=3, id1={7:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-1] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, i=3, id1={7:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, condI=0, i=7, id1={7:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, condI=0, condJ=1, i=45, id1={7:0}, id2={3:0}, j=46, k=20, k=20] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 519.0s, OverallIterations: 33, TraceHistogramMax: 20, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 482.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 20523 SdHoareTripleChecker+Valid, 39.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20278 mSDsluCounter, 7796 SdHoareTripleChecker+Invalid, 34.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7734 mSDsCounter, 1522 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61405 IncrementalHoareTripleChecker+Invalid, 62937 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1522 mSolverCounterUnsat, 62 mSDtfsCounter, 61405 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2000 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1739 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52756 ImplicationChecksByTransitivity, 187.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48883occurred in iteration=30, InterpolantAutomatonStates: 1215, 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: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 572 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 98 NumberOfCheckSat, 912 ConstructedInterpolants, 6 QuantifiedInterpolants, 7224 SizeOfPredicates, 285 NumberOfNonLiveVariables, 2901 ConjunctsInSsa, 414 ConjunctsInUnsatCore, 52 InterpolantComputations, 12 PerfectInterpolantSequences, 20/2540 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 02:32:49,885 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