./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.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-wmm/safe033_tso.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 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 --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 03:20:15,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:20:15,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:20:15,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:20:15,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:20:15,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:20:15,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:20:15,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:20:15,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:20:15,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:20:15,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:20:15,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:20:15,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:20:15,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:20:15,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:20:15,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:20:15,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:20:15,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:20:15,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:20:15,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:20:15,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:20:15,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:20:15,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:20:15,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:20:15,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:20:15,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:20:15,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:20:15,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:20:15,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:20:15,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:20:15,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:20:15,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:20:15,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:20:15,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:20:15,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:20:15,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:20:15,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:20:15,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:20:15,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:20:15,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:20:15,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:20:15,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:20:15,777 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:20:15,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:20:15,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:20:15,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:20:15,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:20:15,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:20:15,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:20:15,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:20:15,781 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:20:15,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:20:15,782 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:20:15,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:20:15,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:20:15,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:20:15,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:20:15,783 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:20:15,783 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:20:15,783 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:20:15,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:20:15,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:20:15,784 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:20:15,784 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:20:15,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:20:15,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:20:15,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:20:15,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:20:15,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:20:15,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:20:15,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:20:15,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:20:15,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:20:15,786 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:20:15,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:20:15,786 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:20:15,787 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:20:16,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:20:16,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:20:16,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:20:16,127 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:20:16,128 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:20:16,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-30 03:20:17,353 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:20:17,611 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:20:17,611 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-30 03:20:17,630 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9efeea5f/2c375401fcfc4ac3a0c97d68aabe1e70/FLAG98663fbb6 [2023-08-30 03:20:17,642 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9efeea5f/2c375401fcfc4ac3a0c97d68aabe1e70 [2023-08-30 03:20:17,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:20:17,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:20:17,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:20:17,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:20:17,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:20:17,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:20:17" (1/1) ... [2023-08-30 03:20:17,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e318ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:17, skipping insertion in model container [2023-08-30 03:20:17,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:20:17" (1/1) ... [2023-08-30 03:20:17,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:20:17,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:20:17,817 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-wmm/safe033_tso.i[945,958] [2023-08-30 03:20:17,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:20:17,994 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:20:18,008 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-wmm/safe033_tso.i[945,958] [2023-08-30 03:20:18,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:20:18,096 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:20:18,097 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:20:18,102 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:20:18,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18 WrapperNode [2023-08-30 03:20:18,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:20:18,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:20:18,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:20:18,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:20:18,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,189 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-08-30 03:20:18,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:20:18,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:20:18,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:20:18,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:20:18,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:20:18,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:20:18,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:20:18,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:20:18,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (1/1) ... [2023-08-30 03:20:18,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:20:18,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:20:18,270 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 03:20:18,295 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 03:20:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:20:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:20:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:20:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:20:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:20:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 03:20:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 03:20:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 03:20:18,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 03:20:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:20:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:20:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:20:18,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:20:18,315 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 03:20:18,475 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:20:18,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:20:18,611 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:20:18,617 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:20:18,617 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:20:18,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:18 BoogieIcfgContainer [2023-08-30 03:20:18,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:20:18,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:20:18,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:20:18,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:20:18,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:20:17" (1/3) ... [2023-08-30 03:20:18,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc00abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:20:18, skipping insertion in model container [2023-08-30 03:20:18,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:18" (2/3) ... [2023-08-30 03:20:18,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc00abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:20:18, skipping insertion in model container [2023-08-30 03:20:18,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:18" (3/3) ... [2023-08-30 03:20:18,626 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2023-08-30 03:20:18,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:20:18,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 03:20:18,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:20:18,726 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:20:18,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 160 flow [2023-08-30 03:20:18,828 INFO L130 PetriNetUnfolder]: 2/73 cut-off events. [2023-08-30 03:20:18,829 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:20:18,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 03:20:18,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 160 flow [2023-08-30 03:20:18,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 69 transitions, 144 flow [2023-08-30 03:20:18,842 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:20:18,860 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 69 transitions, 144 flow [2023-08-30 03:20:18,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 69 transitions, 144 flow [2023-08-30 03:20:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 69 transitions, 144 flow [2023-08-30 03:20:18,884 INFO L130 PetriNetUnfolder]: 2/69 cut-off events. [2023-08-30 03:20:18,887 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:20:18,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-30 03:20:18,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 780 [2023-08-30 03:20:20,979 INFO L134 LiptonReduction]: Checked pairs total: 1405 [2023-08-30 03:20:20,979 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-30 03:20:20,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:20:21,017 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;@3cdb9e10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:20:21,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 03:20:21,020 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:20:21,020 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:20:21,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:20:21,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:20:21,021 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 03:20:21,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:20:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 277, now seen corresponding path program 1 times [2023-08-30 03:20:21,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:20:21,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304647862] [2023-08-30 03:20:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:20:21,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:20:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:20:21,130 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 03:20:21,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:20:21,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304647862] [2023-08-30 03:20:21,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304647862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:20:21,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:20:21,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:20:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925986165] [2023-08-30 03:20:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:20:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:20:21,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:20:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:20:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:20:21,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 150 [2023-08-30 03:20:21,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:20:21,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 150 [2023-08-30 03:20:21,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:20:21,230 INFO L130 PetriNetUnfolder]: 56/112 cut-off events. [2023-08-30 03:20:21,230 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:20:21,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 112 events. 56/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 388 event pairs, 56 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 222. Up to 109 conditions per place. [2023-08-30 03:20:21,232 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 12 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-30 03:20:21,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 58 flow [2023-08-30 03:20:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:20:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:20:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 157 transitions. [2023-08-30 03:20:21,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233333333333333 [2023-08-30 03:20:21,245 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 157 transitions. [2023-08-30 03:20:21,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 157 transitions. [2023-08-30 03:20:21,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:20:21,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 157 transitions. [2023-08-30 03:20:21,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,259 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,260 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 2 states and 157 transitions. [2023-08-30 03:20:21,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 58 flow [2023-08-30 03:20:21,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:20:21,264 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 32 flow [2023-08-30 03:20:21,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 03:20:21,269 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -5 predicate places. [2023-08-30 03:20:21,269 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 32 flow [2023-08-30 03:20:21,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:20:21,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:20:21,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:20:21,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 03:20:21,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:20:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash 68794689, now seen corresponding path program 1 times [2023-08-30 03:20:21,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:20:21,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608861287] [2023-08-30 03:20:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:20:21,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:20:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:20:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:20:21,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:20:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608861287] [2023-08-30 03:20:21,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608861287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:20:21,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:20:21,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:20:21,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872127650] [2023-08-30 03:20:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:20:21,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:20:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:20:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:20:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:20:21,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 150 [2023-08-30 03:20:21,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 32 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 03:20:21,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:20:21,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 150 [2023-08-30 03:20:21,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:20:21,847 INFO L130 PetriNetUnfolder]: 44/91 cut-off events. [2023-08-30 03:20:21,848 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:20:21,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 91 events. 44/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 301 event pairs, 18 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 186. Up to 83 conditions per place. [2023-08-30 03:20:21,849 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 11 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-08-30 03:20:21,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 60 flow [2023-08-30 03:20:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:20:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:20:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2023-08-30 03:20:21,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-30 03:20:21,852 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 250 transitions. [2023-08-30 03:20:21,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 250 transitions. [2023-08-30 03:20:21,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:20:21,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 250 transitions. [2023-08-30 03:20:21,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,857 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:21,857 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 32 flow. Second operand 4 states and 250 transitions. [2023-08-30 03:20:21,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 60 flow [2023-08-30 03:20:21,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:20:21,858 INFO L231 Difference]: Finished difference. Result has 22 places, 13 transitions, 34 flow [2023-08-30 03:20:21,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2023-08-30 03:20:21,859 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2023-08-30 03:20:21,859 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 34 flow [2023-08-30 03:20:21,860 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 03:20:21,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:20:21,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:20:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:20:21,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 03:20:21,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:20:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 68794665, now seen corresponding path program 1 times [2023-08-30 03:20:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:20:21,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506098517] [2023-08-30 03:20:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:20:21,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:20:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:20:21,995 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 03:20:21,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:20:21,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506098517] [2023-08-30 03:20:21,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506098517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:20:21,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:20:21,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:20:21,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738892882] [2023-08-30 03:20:21,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:20:21,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:20:21,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:20:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:20:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:20:22,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 150 [2023-08-30 03:20:22,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 13 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:20:22,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 150 [2023-08-30 03:20:22,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:20:22,085 INFO L130 PetriNetUnfolder]: 60/131 cut-off events. [2023-08-30 03:20:22,085 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:20:22,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 131 events. 60/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 479 event pairs, 25 based on Foata normal form. 12/143 useless extension candidates. Maximal degree in co-relation 266. Up to 97 conditions per place. [2023-08-30 03:20:22,087 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 15 selfloop transitions, 3 changer transitions 9/28 dead transitions. [2023-08-30 03:20:22,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 122 flow [2023-08-30 03:20:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:20:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:20:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2023-08-30 03:20:22,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4786666666666667 [2023-08-30 03:20:22,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 359 transitions. [2023-08-30 03:20:22,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 359 transitions. [2023-08-30 03:20:22,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:20:22,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 359 transitions. [2023-08-30 03:20:22,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,094 INFO L175 Difference]: Start difference. First operand has 22 places, 13 transitions, 34 flow. Second operand 5 states and 359 transitions. [2023-08-30 03:20:22,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 122 flow [2023-08-30 03:20:22,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:20:22,096 INFO L231 Difference]: Finished difference. Result has 27 places, 15 transitions, 58 flow [2023-08-30 03:20:22,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=27, PETRI_TRANSITIONS=15} [2023-08-30 03:20:22,097 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-30 03:20:22,100 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 15 transitions, 58 flow [2023-08-30 03:20:22,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:20:22,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:20:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:20:22,101 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 03:20:22,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:20:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2132605265, now seen corresponding path program 1 times [2023-08-30 03:20:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:20:22,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377468114] [2023-08-30 03:20:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:20:22,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:20:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:20:22,307 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 03:20:22,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:20:22,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377468114] [2023-08-30 03:20:22,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377468114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:20:22,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:20:22,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:20:22,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527486917] [2023-08-30 03:20:22,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:20:22,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:20:22,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:20:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:20:22,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:20:22,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 150 [2023-08-30 03:20:22,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 15 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:20:22,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 150 [2023-08-30 03:20:22,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:20:22,346 INFO L130 PetriNetUnfolder]: 23/60 cut-off events. [2023-08-30 03:20:22,349 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 03:20:22,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 60 events. 23/60 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 8 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 170. Up to 42 conditions per place. [2023-08-30 03:20:22,350 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 15 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2023-08-30 03:20:22,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 113 flow [2023-08-30 03:20:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:20:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:20:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-08-30 03:20:22,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2023-08-30 03:20:22,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-08-30 03:20:22,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-08-30 03:20:22,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:20:22,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-08-30 03:20:22,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,358 INFO L175 Difference]: Start difference. First operand has 27 places, 15 transitions, 58 flow. Second operand 3 states and 219 transitions. [2023-08-30 03:20:22,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 113 flow [2023-08-30 03:20:22,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 108 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 03:20:22,360 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 72 flow [2023-08-30 03:20:22,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-08-30 03:20:22,362 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-08-30 03:20:22,362 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 72 flow [2023-08-30 03:20:22,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:20:22,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:20:22,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:20:22,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 03:20:22,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:20:22,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1295341046, now seen corresponding path program 1 times [2023-08-30 03:20:22,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:20:22,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355075023] [2023-08-30 03:20:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:20:22,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:20:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:20:22,537 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 03:20:22,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:20:22,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355075023] [2023-08-30 03:20:22,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355075023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:20:22,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:20:22,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:20:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037155821] [2023-08-30 03:20:22,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:20:22,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:20:22,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:20:22,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:20:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:20:22,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 150 [2023-08-30 03:20:22,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:20:22,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 150 [2023-08-30 03:20:22,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:20:22,577 INFO L130 PetriNetUnfolder]: 9/32 cut-off events. [2023-08-30 03:20:22,577 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 03:20:22,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 32 events. 9/32 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 3 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 101. Up to 13 conditions per place. [2023-08-30 03:20:22,582 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 13 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2023-08-30 03:20:22,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 123 flow [2023-08-30 03:20:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:20:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:20:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2023-08-30 03:20:22,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2023-08-30 03:20:22,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2023-08-30 03:20:22,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2023-08-30 03:20:22,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:20:22,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2023-08-30 03:20:22,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,587 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 72 flow. Second operand 4 states and 286 transitions. [2023-08-30 03:20:22,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 123 flow [2023-08-30 03:20:22,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 110 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 03:20:22,589 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 77 flow [2023-08-30 03:20:22,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-30 03:20:22,591 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-30 03:20:22,591 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 77 flow [2023-08-30 03:20:22,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:20:22,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:20:22,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:20:22,593 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 03:20:22,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:20:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1203760614, now seen corresponding path program 1 times [2023-08-30 03:20:22,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:20:22,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126957366] [2023-08-30 03:20:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:20:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:20:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:20:22,781 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 03:20:22,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:20:22,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126957366] [2023-08-30 03:20:22,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126957366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:20:22,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:20:22,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:20:22,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832130341] [2023-08-30 03:20:22,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:20:22,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:20:22,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:20:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:20:22,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:20:22,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 150 [2023-08-30 03:20:22,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:20:22,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 150 [2023-08-30 03:20:22,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:20:22,829 INFO L130 PetriNetUnfolder]: 16/52 cut-off events. [2023-08-30 03:20:22,830 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 03:20:22,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 52 events. 16/52 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 169. Up to 34 conditions per place. [2023-08-30 03:20:22,830 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 13 selfloop transitions, 3 changer transitions 11/27 dead transitions. [2023-08-30 03:20:22,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 178 flow [2023-08-30 03:20:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:20:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:20:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 344 transitions. [2023-08-30 03:20:22,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45866666666666667 [2023-08-30 03:20:22,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 344 transitions. [2023-08-30 03:20:22,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 344 transitions. [2023-08-30 03:20:22,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:20:22,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 344 transitions. [2023-08-30 03:20:22,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,835 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,835 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 77 flow. Second operand 5 states and 344 transitions. [2023-08-30 03:20:22,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 178 flow [2023-08-30 03:20:22,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 160 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 03:20:22,837 INFO L231 Difference]: Finished difference. Result has 32 places, 15 transitions, 71 flow [2023-08-30 03:20:22,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=71, PETRI_PLACES=32, PETRI_TRANSITIONS=15} [2023-08-30 03:20:22,838 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-30 03:20:22,838 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 15 transitions, 71 flow [2023-08-30 03:20:22,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:20:22,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:20:22,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:20:22,839 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 03:20:22,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:20:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2040579658, now seen corresponding path program 2 times [2023-08-30 03:20:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:20:22,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863720962] [2023-08-30 03:20:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:20:22,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:20:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:20:22,959 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 03:20:22,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:20:22,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863720962] [2023-08-30 03:20:22,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863720962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:20:22,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:20:22,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:20:22,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960059174] [2023-08-30 03:20:22,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:20:22,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:20:22,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:20:22,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:20:22,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:20:22,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 150 [2023-08-30 03:20:22,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 15 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:22,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:20:22,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 150 [2023-08-30 03:20:22,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:20:23,008 INFO L130 PetriNetUnfolder]: 3/18 cut-off events. [2023-08-30 03:20:23,008 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 03:20:23,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 18 events. 3/18 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 1 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 65. Up to 10 conditions per place. [2023-08-30 03:20:23,009 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-30 03:20:23,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 15 transitions, 103 flow [2023-08-30 03:20:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:20:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:20:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 386 transitions. [2023-08-30 03:20:23,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288888888888889 [2023-08-30 03:20:23,011 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 386 transitions. [2023-08-30 03:20:23,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 386 transitions. [2023-08-30 03:20:23,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:20:23,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 386 transitions. [2023-08-30 03:20:23,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:23,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:23,014 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:23,014 INFO L175 Difference]: Start difference. First operand has 32 places, 15 transitions, 71 flow. Second operand 6 states and 386 transitions. [2023-08-30 03:20:23,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 15 transitions, 103 flow [2023-08-30 03:20:23,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 15 transitions, 87 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 03:20:23,015 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-30 03:20:23,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-30 03:20:23,016 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-30 03:20:23,016 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-30 03:20:23,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:20:23,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-08-30 03:20:23,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-30 03:20:23,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-30 03:20:23,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-30 03:20:23,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-08-30 03:20:23,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-30 03:20:23,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 03:20:23,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 03:20:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:20:23,020 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-30 03:20:23,023 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:20:23,023 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:20:23,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:20:23 BasicIcfg [2023-08-30 03:20:23,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:20:23,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:20:23,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:20:23,027 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:20:23,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:18" (3/4) ... [2023-08-30 03:20:23,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 03:20:23,034 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 03:20:23,034 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 03:20:23,038 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 03:20:23,038 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 03:20:23,038 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 03:20:23,038 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 03:20:23,062 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 03:20:23,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:20:23,063 INFO L158 Benchmark]: Toolchain (without parser) took 5417.60ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 55.1MB in the beginning and 31.8MB in the end (delta: 23.3MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2023-08-30 03:20:23,063 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:20:23,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.84ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 55.0MB in the end (delta: -141.8kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-08-30 03:20:23,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.58ms. Allocated memory is still 79.7MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:20:23,064 INFO L158 Benchmark]: Boogie Preprocessor took 46.10ms. Allocated memory is still 79.7MB. Free memory was 52.9MB in the beginning and 51.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:20:23,064 INFO L158 Benchmark]: RCFGBuilder took 381.67ms. Allocated memory is still 79.7MB. Free memory was 51.6MB in the beginning and 38.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 03:20:23,065 INFO L158 Benchmark]: TraceAbstraction took 4405.07ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 37.9MB in the beginning and 34.9MB in the end (delta: 3.0MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2023-08-30 03:20:23,065 INFO L158 Benchmark]: Witness Printer took 36.28ms. Allocated memory is still 117.4MB. Free memory was 34.9MB in the beginning and 31.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 03:20:23,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 456.84ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 55.0MB in the end (delta: -141.8kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.58ms. Allocated memory is still 79.7MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.10ms. Allocated memory is still 79.7MB. Free memory was 52.9MB in the beginning and 51.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.67ms. Allocated memory is still 79.7MB. Free memory was 51.6MB in the beginning and 38.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4405.07ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 37.9MB in the beginning and 34.9MB in the end (delta: 3.0MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. * Witness Printer took 36.28ms. Allocated memory is still 117.4MB. Free memory was 34.9MB in the beginning and 31.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 74 PlacesBefore, 25 PlacesAfterwards, 69 TransitionsBefore, 19 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 75 TotalNumberOfCompositions, 1405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 821, independent: 765, independent conditional: 0, independent unconditional: 765, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 446, independent: 431, independent conditional: 0, independent unconditional: 431, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 821, independent: 334, independent conditional: 0, independent unconditional: 334, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 446, unknown conditional: 0, unknown unconditional: 446] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 758]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 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: 4.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 23 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=5, InterpolantAutomatonStates: 29, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 03:20:23,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE