./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:15,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:15,438 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 10:43:15,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:15,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:15,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:15,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:15,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:15,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:15,474 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:15,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:15,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:15,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:15,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:15,477 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:15,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:15,478 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:15,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:15,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:15,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:15,480 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:43:15,480 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:43:15,481 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:43:15,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:15,481 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:43:15,482 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:15,482 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:15,483 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:15,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:15,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:15,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:15,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:15,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:15,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:15,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:15,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:15,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:15,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:15,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:15,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:15,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:15,487 INFO L153 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2023-11-26 10:43:15,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:15,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:15,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:15,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:15,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:15,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-26 10:43:18,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:19,282 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:19,283 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-26 10:43:19,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data/4f2040d83/893b7381fd5641a286b17796f8d17619/FLAG387a72d29 [2023-11-26 10:43:19,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data/4f2040d83/893b7381fd5641a286b17796f8d17619 [2023-11-26 10:43:19,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:19,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:19,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:19,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:19,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:19,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0ad473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19, skipping insertion in model container [2023-11-26 10:43:19,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:19,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:19,822 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:19,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:19,955 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:19,956 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:19,963 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:19,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19 WrapperNode [2023-11-26 10:43:19,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:19,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:19,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:19,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:19,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,025 INFO L138 Inliner]: procedures = 175, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 121 [2023-11-26 10:43:20,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:20,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:20,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:20,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:20,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,074 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-26 10:43:20,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:20,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:20,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:20,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:20,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:20,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:20,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:20,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-11-26 10:43:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-11-26 10:43:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:43:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:43:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:43:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:43:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:43:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:20,206 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:43:20,363 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:20,365 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:20,569 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:20,788 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:20,788 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:43:20,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:20 BoogieIcfgContainer [2023-11-26 10:43:20,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:20,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:20,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:20,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:20,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:19" (1/3) ... [2023-11-26 10:43:20,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e10ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:20, skipping insertion in model container [2023-11-26 10:43:20,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (2/3) ... [2023-11-26 10:43:20,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e10ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:20, skipping insertion in model container [2023-11-26 10:43:20,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:20" (3/3) ... [2023-11-26 10:43:20,805 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-11-26 10:43:20,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:20,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 10:43:20,827 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:43:20,894 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:43:20,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 48 transitions, 100 flow [2023-11-26 10:43:20,993 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2023-11-26 10:43:20,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:20,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 6/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-11-26 10:43:20,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 48 transitions, 100 flow [2023-11-26 10:43:21,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 97 flow [2023-11-26 10:43:21,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:21,035 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;@50aa06af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:21,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-26 10:43:21,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:21,043 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 10:43:21,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:21,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:21,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 10:43:21,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:21,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash 10050, now seen corresponding path program 1 times [2023-11-26 10:43:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:21,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257401918] [2023-11-26 10:43:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257401918] [2023-11-26 10:43:21,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257401918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:21,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:21,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:43:21,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804377789] [2023-11-26 10:43:21,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:21,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:21,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2023-11-26 10:43:21,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:21,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2023-11-26 10:43:21,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:21,528 INFO L124 PetriNetUnfolderBase]: 77/228 cut-off events. [2023-11-26 10:43:21,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:21,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 228 events. 77/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1024 event pairs, 43 based on Foata normal form. 12/213 useless extension candidates. Maximal degree in co-relation 358. Up to 115 conditions per place. [2023-11-26 10:43:21,539 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 23 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-26 10:43:21,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 149 flow [2023-11-26 10:43:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:43:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-26 10:43:21,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-26 10:43:21,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-26 10:43:21,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-26 10:43:21,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:21,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-26 10:43:21,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,576 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 97 flow. Second operand 3 states and 100 transitions. [2023-11-26 10:43:21,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 149 flow [2023-11-26 10:43:21,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:21,587 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 92 flow [2023-11-26 10:43:21,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-11-26 10:43:21,594 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-11-26 10:43:21,594 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 92 flow [2023-11-26 10:43:21,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:21,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 10:43:21,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:21,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:21,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash 10051, now seen corresponding path program 1 times [2023-11-26 10:43:21,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:21,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141137022] [2023-11-26 10:43:21,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:21,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:21,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141137022] [2023-11-26 10:43:21,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141137022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:21,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:21,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:43:21,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291584145] [2023-11-26 10:43:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:21,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:21,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-26 10:43:21,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:21,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-26 10:43:21,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:21,875 INFO L124 PetriNetUnfolderBase]: 77/227 cut-off events. [2023-11-26 10:43:21,876 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 10:43:21,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 227 events. 77/227 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1031 event pairs, 43 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 364. Up to 114 conditions per place. [2023-11-26 10:43:21,884 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 22 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-26 10:43:21,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 148 flow [2023-11-26 10:43:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:43:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-26 10:43:21,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-26 10:43:21,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-26 10:43:21,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-26 10:43:21,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:21,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-26 10:43:21,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,891 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 92 flow. Second operand 3 states and 100 transitions. [2023-11-26 10:43:21,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 148 flow [2023-11-26 10:43:21,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:21,894 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 90 flow [2023-11-26 10:43:21,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-26 10:43:21,895 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-11-26 10:43:21,895 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 90 flow [2023-11-26 10:43:21,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:21,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:21,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:43:21,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:21,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1242398497, now seen corresponding path program 1 times [2023-11-26 10:43:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:21,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991910820] [2023-11-26 10:43:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:21,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:21,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991910820] [2023-11-26 10:43:21,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991910820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:21,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:21,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869506757] [2023-11-26 10:43:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:21,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:21,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:21,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:21,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-26 10:43:21,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:21,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-26 10:43:21,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:22,171 INFO L124 PetriNetUnfolderBase]: 111/324 cut-off events. [2023-11-26 10:43:22,172 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-26 10:43:22,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 324 events. 111/324 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1689 event pairs, 55 based on Foata normal form. 6/308 useless extension candidates. Maximal degree in co-relation 542. Up to 135 conditions per place. [2023-11-26 10:43:22,177 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 33 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-11-26 10:43:22,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 196 flow [2023-11-26 10:43:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-26 10:43:22,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135416666666666 [2023-11-26 10:43:22,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-26 10:43:22,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-26 10:43:22,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:22,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-26 10:43:22,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,184 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,185 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 90 flow. Second operand 4 states and 137 transitions. [2023-11-26 10:43:22,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 196 flow [2023-11-26 10:43:22,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:22,188 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 107 flow [2023-11-26 10:43:22,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-26 10:43:22,190 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-11-26 10:43:22,190 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 107 flow [2023-11-26 10:43:22,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:22,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:22,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:43:22,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:22,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:22,192 INFO L85 PathProgramCache]: Analyzing trace with hash 84202757, now seen corresponding path program 1 times [2023-11-26 10:43:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:22,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069931827] [2023-11-26 10:43:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:22,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069931827] [2023-11-26 10:43:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069931827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:22,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:22,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:22,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689606380] [2023-11-26 10:43:22,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:22,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-26 10:43:22,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:22,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-26 10:43:22,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:22,513 INFO L124 PetriNetUnfolderBase]: 109/321 cut-off events. [2023-11-26 10:43:22,513 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-26 10:43:22,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 321 events. 109/321 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1661 event pairs, 65 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 564. Up to 156 conditions per place. [2023-11-26 10:43:22,516 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 20 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2023-11-26 10:43:22,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 167 flow [2023-11-26 10:43:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2023-11-26 10:43:22,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2023-11-26 10:43:22,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 125 transitions. [2023-11-26 10:43:22,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 125 transitions. [2023-11-26 10:43:22,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:22,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 125 transitions. [2023-11-26 10:43:22,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,521 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,521 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 107 flow. Second operand 4 states and 125 transitions. [2023-11-26 10:43:22,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 167 flow [2023-11-26 10:43:22,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:22,524 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 96 flow [2023-11-26 10:43:22,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-26 10:43:22,525 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-26 10:43:22,525 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 96 flow [2023-11-26 10:43:22,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:22,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:22,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:43:22,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:22,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:22,527 INFO L85 PathProgramCache]: Analyzing trace with hash -145168152, now seen corresponding path program 1 times [2023-11-26 10:43:22,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:22,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552227096] [2023-11-26 10:43:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:22,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552227096] [2023-11-26 10:43:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552227096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:22,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:22,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105345938] [2023-11-26 10:43:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:22,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:22,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:22,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:22,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-26 10:43:22,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:22,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-26 10:43:22,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:22,831 INFO L124 PetriNetUnfolderBase]: 93/246 cut-off events. [2023-11-26 10:43:22,831 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-26 10:43:22,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 246 events. 93/246 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1040 event pairs, 39 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 460. Up to 92 conditions per place. [2023-11-26 10:43:22,835 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 28 selfloop transitions, 5 changer transitions 18/70 dead transitions. [2023-11-26 10:43:22,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 264 flow [2023-11-26 10:43:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:43:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2023-11-26 10:43:22,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2023-11-26 10:43:22,840 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 237 transitions. [2023-11-26 10:43:22,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 237 transitions. [2023-11-26 10:43:22,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:22,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 237 transitions. [2023-11-26 10:43:22,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,847 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,848 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 96 flow. Second operand 8 states and 237 transitions. [2023-11-26 10:43:22,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 264 flow [2023-11-26 10:43:22,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 254 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-26 10:43:22,854 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 125 flow [2023-11-26 10:43:22,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-11-26 10:43:22,857 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2023-11-26 10:43:22,857 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 125 flow [2023-11-26 10:43:22,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:22,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:22,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:43:22,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:22,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash 197164830, now seen corresponding path program 1 times [2023-11-26 10:43:22,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092873307] [2023-11-26 10:43:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:22,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:22,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092873307] [2023-11-26 10:43:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092873307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:22,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:22,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767706867] [2023-11-26 10:43:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:22,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:22,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:22,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-26 10:43:22,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:22,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-26 10:43:22,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:23,121 INFO L124 PetriNetUnfolderBase]: 96/283 cut-off events. [2023-11-26 10:43:23,121 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-26 10:43:23,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 283 events. 96/283 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1296 event pairs, 41 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 559. Up to 153 conditions per place. [2023-11-26 10:43:23,124 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 32 selfloop transitions, 1 changer transitions 9/62 dead transitions. [2023-11-26 10:43:23,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 262 flow [2023-11-26 10:43:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-26 10:43:23,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2023-11-26 10:43:23,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-26 10:43:23,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-26 10:43:23,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:23,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-26 10:43:23,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,129 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 125 flow. Second operand 4 states and 134 transitions. [2023-11-26 10:43:23,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 262 flow [2023-11-26 10:43:23,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 252 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-26 10:43:23,133 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 124 flow [2023-11-26 10:43:23,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-11-26 10:43:23,136 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-11-26 10:43:23,136 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 124 flow [2023-11-26 10:43:23,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:23,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:23,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:43:23,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:23,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:23,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1374226630, now seen corresponding path program 2 times [2023-11-26 10:43:23,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:23,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674086331] [2023-11-26 10:43:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:23,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:23,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674086331] [2023-11-26 10:43:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674086331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:23,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:23,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:23,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221657512] [2023-11-26 10:43:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:23,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:23,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:23,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-26 10:43:23,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:23,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-26 10:43:23,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:23,333 INFO L124 PetriNetUnfolderBase]: 114/326 cut-off events. [2023-11-26 10:43:23,334 INFO L125 PetriNetUnfolderBase]: For 61/64 co-relation queries the response was YES. [2023-11-26 10:43:23,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 326 events. 114/326 cut-off events. For 61/64 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1603 event pairs, 34 based on Foata normal form. 19/327 useless extension candidates. Maximal degree in co-relation 664. Up to 141 conditions per place. [2023-11-26 10:43:23,336 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 16 selfloop transitions, 2 changer transitions 38/74 dead transitions. [2023-11-26 10:43:23,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 317 flow [2023-11-26 10:43:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2023-11-26 10:43:23,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-26 10:43:23,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 170 transitions. [2023-11-26 10:43:23,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 170 transitions. [2023-11-26 10:43:23,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:23,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 170 transitions. [2023-11-26 10:43:23,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,341 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 124 flow. Second operand 5 states and 170 transitions. [2023-11-26 10:43:23,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 317 flow [2023-11-26 10:43:23,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 314 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:23,344 INFO L231 Difference]: Finished difference. Result has 58 places, 34 transitions, 112 flow [2023-11-26 10:43:23,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2023-11-26 10:43:23,345 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2023-11-26 10:43:23,345 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 112 flow [2023-11-26 10:43:23,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:23,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:23,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:43:23,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:23,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1710501667, now seen corresponding path program 1 times [2023-11-26 10:43:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:23,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873517961] [2023-11-26 10:43:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:23,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873517961] [2023-11-26 10:43:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873517961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:23,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:23,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:23,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972909464] [2023-11-26 10:43:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:23,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:23,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:23,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:23,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:23,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:23,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:23,673 INFO L124 PetriNetUnfolderBase]: 94/314 cut-off events. [2023-11-26 10:43:23,674 INFO L125 PetriNetUnfolderBase]: For 99/101 co-relation queries the response was YES. [2023-11-26 10:43:23,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 314 events. 94/314 cut-off events. For 99/101 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1617 event pairs, 29 based on Foata normal form. 7/305 useless extension candidates. Maximal degree in co-relation 690. Up to 109 conditions per place. [2023-11-26 10:43:23,677 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 37 selfloop transitions, 6 changer transitions 19/78 dead transitions. [2023-11-26 10:43:23,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 364 flow [2023-11-26 10:43:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:43:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:43:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 304 transitions. [2023-11-26 10:43:23,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-26 10:43:23,680 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 304 transitions. [2023-11-26 10:43:23,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 304 transitions. [2023-11-26 10:43:23,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:23,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 304 transitions. [2023-11-26 10:43:23,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.636363636363637) internal successors, (304), 11 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,684 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,684 INFO L175 Difference]: Start difference. First operand has 58 places, 34 transitions, 112 flow. Second operand 11 states and 304 transitions. [2023-11-26 10:43:23,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 364 flow [2023-11-26 10:43:23,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 336 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-26 10:43:23,688 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 157 flow [2023-11-26 10:43:23,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=157, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2023-11-26 10:43:23,689 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-11-26 10:43:23,690 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 157 flow [2023-11-26 10:43:23,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:23,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:43:23,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:23,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 880630481, now seen corresponding path program 2 times [2023-11-26 10:43:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:23,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142230563] [2023-11-26 10:43:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:23,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:23,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:23,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:43:23,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-26 10:43:23,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-26 10:43:23,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-26 10:43:23,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-26 10:43:23,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-26 10:43:23,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:43:23,746 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:43:23,752 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:43:23,753 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:43:23,801 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-26 10:43:23,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:43:23 BasicIcfg [2023-11-26 10:43:23,832 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:43:23,832 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:43:23,833 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:43:23,833 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:43:23,833 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:20" (3/4) ... [2023-11-26 10:43:23,836 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:43:23,837 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:43:23,838 INFO L158 Benchmark]: Toolchain (without parser) took 4504.99ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 126.9MB in the beginning and 67.9MB in the end (delta: 58.9MB). Peak memory consumption was 94.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:23,839 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:23,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.79ms. Allocated memory is still 157.3MB. Free memory was 126.6MB in the beginning and 106.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 10:43:23,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.03ms. Allocated memory is still 157.3MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:23,840 INFO L158 Benchmark]: Boogie Preprocessor took 91.11ms. Allocated memory is still 157.3MB. Free memory was 103.9MB in the beginning and 101.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:23,840 INFO L158 Benchmark]: RCFGBuilder took 672.35ms. Allocated memory is still 157.3MB. Free memory was 101.8MB in the beginning and 75.2MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 10:43:23,841 INFO L158 Benchmark]: TraceAbstraction took 3037.34ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 74.5MB in the beginning and 67.9MB in the end (delta: 6.6MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2023-11-26 10:43:23,841 INFO L158 Benchmark]: Witness Printer took 5.12ms. Allocated memory is still 190.8MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:23,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.79ms. Allocated memory is still 157.3MB. Free memory was 126.6MB in the beginning and 106.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.03ms. Allocated memory is still 157.3MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.11ms. Allocated memory is still 157.3MB. Free memory was 103.9MB in the beginning and 101.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 672.35ms. Allocated memory is still 157.3MB. Free memory was 101.8MB in the beginning and 75.2MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3037.34ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 74.5MB in the beginning and 67.9MB in the end (delta: 6.6MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * Witness Printer took 5.12ms. Allocated memory is still 190.8MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 683]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 683. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L712] EXPR 0 pendingIo = lp + 1 VAL [lp=1, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; VAL [\result=0, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=2, status=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=2, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] CALL 0 reach_error() [L683] COND FALSE 0 !(0) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 57 locations, 5 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: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 651 IncrementalHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 16 mSDtfsCounter, 651 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=8, InterpolantAutomatonStates: 42, 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, 0.8s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 10:43:23,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:26,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:26,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 10:43:26,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:26,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:26,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:26,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:26,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:26,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:26,889 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:26,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:26,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:26,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:26,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:26,893 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:26,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:26,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:26,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:26,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:26,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:26,897 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:43:26,897 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:43:26,898 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:43:26,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:26,898 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:43:26,899 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:43:26,899 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:43:26,900 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:26,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:26,901 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:26,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:26,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:26,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:26,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:26,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:26,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:26,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:26,905 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:43:26,905 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:43:26,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:26,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:26,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:26,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:26,907 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:43:26,907 INFO L153 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2023-11-26 10:43:27,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:27,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:27,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:27,359 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:27,360 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:27,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-26 10:43:30,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:31,025 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:31,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-26 10:43:31,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data/6df16b1ef/c02c002267a74dc1b332d585905cc567/FLAG00e0d7f17 [2023-11-26 10:43:31,077 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/data/6df16b1ef/c02c002267a74dc1b332d585905cc567 [2023-11-26 10:43:31,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:31,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:31,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:31,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:31,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:31,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d2e172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31, skipping insertion in model container [2023-11-26 10:43:31,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:31,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:31,730 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:31,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:31,873 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:31,875 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:31,885 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:31,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31 WrapperNode [2023-11-26 10:43:31,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:31,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:31,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:31,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:31,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,978 INFO L138 Inliner]: procedures = 178, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 119 [2023-11-26 10:43:31,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:31,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:31,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:31,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:31,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,041 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-26 10:43:32,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:32,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:32,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:32,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:32,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:32,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:32,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:32,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:32,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-11-26 10:43:32,184 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-11-26 10:43:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:43:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 10:43:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 10:43:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 10:43:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 10:43:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:43:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:32,188 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:43:32,356 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:32,358 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:32,642 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:32,859 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:32,866 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:43:32,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:32 BoogieIcfgContainer [2023-11-26 10:43:32,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:32,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:32,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:32,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:32,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:31" (1/3) ... [2023-11-26 10:43:32,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b26fa44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:32, skipping insertion in model container [2023-11-26 10:43:32,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (2/3) ... [2023-11-26 10:43:32,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b26fa44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:32, skipping insertion in model container [2023-11-26 10:43:32,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:32" (3/3) ... [2023-11-26 10:43:32,882 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-11-26 10:43:32,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:32,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 10:43:32,907 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:43:32,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:43:33,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 48 transitions, 100 flow [2023-11-26 10:43:33,045 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2023-11-26 10:43:33,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:33,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 6/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-11-26 10:43:33,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 48 transitions, 100 flow [2023-11-26 10:43:33,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 97 flow [2023-11-26 10:43:33,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:33,073 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;@680cafd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:33,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-26 10:43:33,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:33,077 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 10:43:33,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:33,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:33,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 10:43:33,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash 9922, now seen corresponding path program 1 times [2023-11-26 10:43:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:33,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086258124] [2023-11-26 10:43:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:33,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:33,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:33,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:33,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 10:43:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:33,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:33,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:33,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 10:43:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:33,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:33,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:33,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086258124] [2023-11-26 10:43:33,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086258124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:33,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:33,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:43:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190451695] [2023-11-26 10:43:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:33,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:33,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:33,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2023-11-26 10:43:33,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:33,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:33,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2023-11-26 10:43:33,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:33,588 INFO L124 PetriNetUnfolderBase]: 77/228 cut-off events. [2023-11-26 10:43:33,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:33,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 228 events. 77/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1024 event pairs, 43 based on Foata normal form. 12/213 useless extension candidates. Maximal degree in co-relation 358. Up to 115 conditions per place. [2023-11-26 10:43:33,598 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 23 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-26 10:43:33,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 149 flow [2023-11-26 10:43:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:43:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-26 10:43:33,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-26 10:43:33,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-26 10:43:33,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-26 10:43:33,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:33,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-26 10:43:33,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:33,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:33,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:33,634 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 97 flow. Second operand 3 states and 100 transitions. [2023-11-26 10:43:33,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 149 flow [2023-11-26 10:43:33,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:33,645 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 92 flow [2023-11-26 10:43:33,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-11-26 10:43:33,654 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-11-26 10:43:33,654 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 92 flow [2023-11-26 10:43:33,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:33,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:33,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 10:43:33,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:33,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:33,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:33,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash 9923, now seen corresponding path program 1 times [2023-11-26 10:43:33,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:33,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214768455] [2023-11-26 10:43:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:33,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:33,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:33,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 10:43:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:33,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:33,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:33,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 10:43:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:33,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:33,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214768455] [2023-11-26 10:43:33,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214768455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:34,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:43:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434813490] [2023-11-26 10:43:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:34,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:34,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:34,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:34,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-26 10:43:34,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:34,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-26 10:43:34,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:34,154 INFO L124 PetriNetUnfolderBase]: 77/227 cut-off events. [2023-11-26 10:43:34,154 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 10:43:34,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 227 events. 77/227 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1031 event pairs, 43 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 364. Up to 114 conditions per place. [2023-11-26 10:43:34,158 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 22 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-26 10:43:34,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 148 flow [2023-11-26 10:43:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:43:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-26 10:43:34,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-26 10:43:34,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-26 10:43:34,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-26 10:43:34,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:34,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-26 10:43:34,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,165 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 92 flow. Second operand 3 states and 100 transitions. [2023-11-26 10:43:34,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 148 flow [2023-11-26 10:43:34,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:34,168 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 90 flow [2023-11-26 10:43:34,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-26 10:43:34,169 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-11-26 10:43:34,169 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 90 flow [2023-11-26 10:43:34,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:34,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:34,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 10:43:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:34,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:34,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2126167523, now seen corresponding path program 1 times [2023-11-26 10:43:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:34,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234097655] [2023-11-26 10:43:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:34,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:34,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:34,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 10:43:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:34,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:34,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:34,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:34,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:34,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234097655] [2023-11-26 10:43:34,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234097655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:34,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:34,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015386539] [2023-11-26 10:43:34,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:34,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:34,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:34,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-26 10:43:34,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:34,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-26 10:43:34,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:34,686 INFO L124 PetriNetUnfolderBase]: 109/315 cut-off events. [2023-11-26 10:43:34,686 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 10:43:34,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 315 events. 109/315 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1532 event pairs, 50 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 516. Up to 149 conditions per place. [2023-11-26 10:43:34,691 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 36 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-11-26 10:43:34,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 220 flow [2023-11-26 10:43:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2023-11-26 10:43:34,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 10:43:34,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 160 transitions. [2023-11-26 10:43:34,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 160 transitions. [2023-11-26 10:43:34,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:34,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 160 transitions. [2023-11-26 10:43:34,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,702 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 90 flow. Second operand 5 states and 160 transitions. [2023-11-26 10:43:34,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 220 flow [2023-11-26 10:43:34,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:34,707 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 134 flow [2023-11-26 10:43:34,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-11-26 10:43:34,709 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-26 10:43:34,710 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 134 flow [2023-11-26 10:43:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:34,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:34,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:34,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:34,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:34,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash -706254948, now seen corresponding path program 1 times [2023-11-26 10:43:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263954361] [2023-11-26 10:43:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:34,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:34,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:34,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:34,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-26 10:43:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:34,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:34,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:35,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:35,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263954361] [2023-11-26 10:43:35,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263954361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027423333] [2023-11-26 10:43:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:35,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-26 10:43:35,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:35,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-26 10:43:35,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:35,196 INFO L124 PetriNetUnfolderBase]: 125/360 cut-off events. [2023-11-26 10:43:35,197 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-26 10:43:35,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 360 events. 125/360 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1889 event pairs, 54 based on Foata normal form. 6/341 useless extension candidates. Maximal degree in co-relation 638. Up to 158 conditions per place. [2023-11-26 10:43:35,201 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 34 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-26 10:43:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 238 flow [2023-11-26 10:43:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-26 10:43:35,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135416666666666 [2023-11-26 10:43:35,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-26 10:43:35,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-26 10:43:35,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:35,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-26 10:43:35,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,206 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 134 flow. Second operand 4 states and 137 transitions. [2023-11-26 10:43:35,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 238 flow [2023-11-26 10:43:35,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:35,211 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 148 flow [2023-11-26 10:43:35,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-11-26 10:43:35,212 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2023-11-26 10:43:35,212 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 148 flow [2023-11-26 10:43:35,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:35,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:35,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:35,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:35,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:35,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash -194511898, now seen corresponding path program 1 times [2023-11-26 10:43:35,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:35,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230071952] [2023-11-26 10:43:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:35,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:35,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:35,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-26 10:43:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:35,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:35,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:35,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:35,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:35,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230071952] [2023-11-26 10:43:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230071952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:35,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:35,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:35,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405985091] [2023-11-26 10:43:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:35,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:35,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:35,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:35,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-26 10:43:35,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:35,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-26 10:43:35,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:35,795 INFO L124 PetriNetUnfolderBase]: 152/411 cut-off events. [2023-11-26 10:43:35,795 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-26 10:43:35,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 411 events. 152/411 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2210 event pairs, 69 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 800. Up to 241 conditions per place. [2023-11-26 10:43:35,800 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 39 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2023-11-26 10:43:35,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 302 flow [2023-11-26 10:43:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2023-11-26 10:43:35,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6625 [2023-11-26 10:43:35,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 159 transitions. [2023-11-26 10:43:35,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 159 transitions. [2023-11-26 10:43:35,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:35,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 159 transitions. [2023-11-26 10:43:35,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,807 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 148 flow. Second operand 5 states and 159 transitions. [2023-11-26 10:43:35,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 302 flow [2023-11-26 10:43:35,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 296 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:35,814 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 212 flow [2023-11-26 10:43:35,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-11-26 10:43:35,817 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-11-26 10:43:35,818 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 212 flow [2023-11-26 10:43:35,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:35,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:35,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:36,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:36,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1184602904, now seen corresponding path program 1 times [2023-11-26 10:43:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144036137] [2023-11-26 10:43:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:36,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:36,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-26 10:43:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:36,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:36,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:36,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:36,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:36,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144036137] [2023-11-26 10:43:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144036137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:36,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:36,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113778136] [2023-11-26 10:43:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:36,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:36,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:36,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2023-11-26 10:43:36,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:36,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2023-11-26 10:43:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:36,419 INFO L124 PetriNetUnfolderBase]: 149/407 cut-off events. [2023-11-26 10:43:36,419 INFO L125 PetriNetUnfolderBase]: For 230/235 co-relation queries the response was YES. [2023-11-26 10:43:36,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 407 events. 149/407 cut-off events. For 230/235 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2108 event pairs, 60 based on Foata normal form. 9/400 useless extension candidates. Maximal degree in co-relation 943. Up to 179 conditions per place. [2023-11-26 10:43:36,424 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 50 selfloop transitions, 9 changer transitions 1/86 dead transitions. [2023-11-26 10:43:36,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 440 flow [2023-11-26 10:43:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:43:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:43:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2023-11-26 10:43:36,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-26 10:43:36,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 217 transitions. [2023-11-26 10:43:36,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 217 transitions. [2023-11-26 10:43:36,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:36,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 217 transitions. [2023-11-26 10:43:36,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,429 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,430 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 212 flow. Second operand 7 states and 217 transitions. [2023-11-26 10:43:36,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 440 flow [2023-11-26 10:43:36,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:36,435 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 264 flow [2023-11-26 10:43:36,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-26 10:43:36,437 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-11-26 10:43:36,437 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 264 flow [2023-11-26 10:43:36,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:36,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:36,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:36,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:36,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:36,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1734915089, now seen corresponding path program 1 times [2023-11-26 10:43:36,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:36,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627228254] [2023-11-26 10:43:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:36,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:36,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:36,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-26 10:43:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:36,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:36,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:36,868 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_41| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_41| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_41|)))) is different from true [2023-11-26 10:43:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:36,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:36,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627228254] [2023-11-26 10:43:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627228254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283135428] [2023-11-26 10:43:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:36,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:36,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:36,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:36,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:36,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:37,012 INFO L124 PetriNetUnfolderBase]: 145/412 cut-off events. [2023-11-26 10:43:37,013 INFO L125 PetriNetUnfolderBase]: For 232/233 co-relation queries the response was YES. [2023-11-26 10:43:37,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 412 events. 145/412 cut-off events. For 232/233 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2210 event pairs, 60 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 972. Up to 188 conditions per place. [2023-11-26 10:43:37,017 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 33 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2023-11-26 10:43:37,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 378 flow [2023-11-26 10:43:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-26 10:43:37,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-26 10:43:37,029 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-26 10:43:37,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-26 10:43:37,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:37,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-26 10:43:37,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,032 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,032 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 264 flow. Second operand 4 states and 121 transitions. [2023-11-26 10:43:37,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 378 flow [2023-11-26 10:43:37,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:37,037 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 324 flow [2023-11-26 10:43:37,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-11-26 10:43:37,038 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2023-11-26 10:43:37,038 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 324 flow [2023-11-26 10:43:37,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:37,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:37,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:37,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:37,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2052207740, now seen corresponding path program 1 times [2023-11-26 10:43:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:37,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255814495] [2023-11-26 10:43:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:37,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:37,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:37,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-26 10:43:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:37,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:37,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:37,520 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_42| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_42|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_42| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 10:43:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:37,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:37,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:37,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255814495] [2023-11-26 10:43:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255814495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757021126] [2023-11-26 10:43:37,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:37,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:37,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:37,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:37,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:37,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:37,659 INFO L124 PetriNetUnfolderBase]: 143/408 cut-off events. [2023-11-26 10:43:37,659 INFO L125 PetriNetUnfolderBase]: For 471/478 co-relation queries the response was YES. [2023-11-26 10:43:37,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 408 events. 143/408 cut-off events. For 471/478 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2171 event pairs, 60 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 1150. Up to 188 conditions per place. [2023-11-26 10:43:37,663 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 34 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-11-26 10:43:37,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 448 flow [2023-11-26 10:43:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-26 10:43:37,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-26 10:43:37,665 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-26 10:43:37,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-26 10:43:37,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:37,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-26 10:43:37,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,668 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 324 flow. Second operand 4 states and 121 transitions. [2023-11-26 10:43:37,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 448 flow [2023-11-26 10:43:37,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 434 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:37,674 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 361 flow [2023-11-26 10:43:37,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-11-26 10:43:37,675 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2023-11-26 10:43:37,676 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 361 flow [2023-11-26 10:43:37,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:37,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:37,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:37,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:37,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:37,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:37,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash 263148276, now seen corresponding path program 1 times [2023-11-26 10:43:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:37,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921322028] [2023-11-26 10:43:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:37,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:37,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-26 10:43:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:37,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:37,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:38,089 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_43| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_43| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_43|) (_ bv0 1)))) is different from true [2023-11-26 10:43:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:38,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:38,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:38,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921322028] [2023-11-26 10:43:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921322028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:38,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:38,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991943973] [2023-11-26 10:43:38,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:38,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:38,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:38,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:38,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:38,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:38,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:38,253 INFO L124 PetriNetUnfolderBase]: 147/422 cut-off events. [2023-11-26 10:43:38,253 INFO L125 PetriNetUnfolderBase]: For 614/621 co-relation queries the response was YES. [2023-11-26 10:43:38,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 422 events. 147/422 cut-off events. For 614/621 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2264 event pairs, 62 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1249. Up to 188 conditions per place. [2023-11-26 10:43:38,259 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 36 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-11-26 10:43:38,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 491 flow [2023-11-26 10:43:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-26 10:43:38,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-26 10:43:38,261 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-26 10:43:38,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-26 10:43:38,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:38,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-26 10:43:38,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,264 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,264 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 361 flow. Second operand 4 states and 121 transitions. [2023-11-26 10:43:38,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 491 flow [2023-11-26 10:43:38,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 476 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:38,273 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 397 flow [2023-11-26 10:43:38,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-26 10:43:38,275 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2023-11-26 10:43:38,276 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 397 flow [2023-11-26 10:43:38,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:38,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:38,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:38,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:38,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1969633012, now seen corresponding path program 1 times [2023-11-26 10:43:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063437619] [2023-11-26 10:43:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:38,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:38,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:38,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-26 10:43:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:38,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:38,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:38,729 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_44| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-26 10:43:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:38,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:38,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063437619] [2023-11-26 10:43:38,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063437619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:38,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:38,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:38,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714815236] [2023-11-26 10:43:38,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:38,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:38,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:38,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:38,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:38,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:38,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:38,887 INFO L124 PetriNetUnfolderBase]: 149/426 cut-off events. [2023-11-26 10:43:38,888 INFO L125 PetriNetUnfolderBase]: For 800/811 co-relation queries the response was YES. [2023-11-26 10:43:38,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 426 events. 149/426 cut-off events. For 800/811 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2280 event pairs, 60 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 1348. Up to 188 conditions per place. [2023-11-26 10:43:38,893 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 38 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2023-11-26 10:43:38,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 535 flow [2023-11-26 10:43:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-26 10:43:38,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-26 10:43:38,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-26 10:43:38,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-26 10:43:38,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:38,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-26 10:43:38,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,897 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,898 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 397 flow. Second operand 4 states and 121 transitions. [2023-11-26 10:43:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 535 flow [2023-11-26 10:43:38,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:38,905 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 437 flow [2023-11-26 10:43:38,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=437, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-11-26 10:43:38,907 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2023-11-26 10:43:38,908 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 437 flow [2023-11-26 10:43:38,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:38,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:38,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:39,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:39,111 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:39,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash -806068818, now seen corresponding path program 2 times [2023-11-26 10:43:39,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:39,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346380020] [2023-11-26 10:43:39,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:39,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:39,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:39,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-26 10:43:39,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:39,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:39,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:39,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:39,316 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_45| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_45|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_45| (_ bv0 1))))) is different from true [2023-11-26 10:43:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:39,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:39,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:39,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346380020] [2023-11-26 10:43:39,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346380020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:39,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:39,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:39,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438749179] [2023-11-26 10:43:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:39,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:39,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:39,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:39,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:39,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:39,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:39,483 INFO L124 PetriNetUnfolderBase]: 147/422 cut-off events. [2023-11-26 10:43:39,483 INFO L125 PetriNetUnfolderBase]: For 986/997 co-relation queries the response was YES. [2023-11-26 10:43:39,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 422 events. 147/422 cut-off events. For 986/997 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2247 event pairs, 60 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 1413. Up to 188 conditions per place. [2023-11-26 10:43:39,488 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 38 selfloop transitions, 14 changer transitions 0/81 dead transitions. [2023-11-26 10:43:39,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 585 flow [2023-11-26 10:43:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-26 10:43:39,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-26 10:43:39,491 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-26 10:43:39,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-26 10:43:39,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:39,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-26 10:43:39,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,493 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 437 flow. Second operand 4 states and 121 transitions. [2023-11-26 10:43:39,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 585 flow [2023-11-26 10:43:39,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:39,501 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 487 flow [2023-11-26 10:43:39,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-11-26 10:43:39,503 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2023-11-26 10:43:39,503 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 487 flow [2023-11-26 10:43:39,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:39,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:39,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:39,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:39,706 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:39,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash 929081941, now seen corresponding path program 1 times [2023-11-26 10:43:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17215710] [2023-11-26 10:43:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:39,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:39,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-26 10:43:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:39,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:39,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:39,901 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_46| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_46| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_46|)))) is different from true [2023-11-26 10:43:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:39,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:39,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17215710] [2023-11-26 10:43:39,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17215710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:39,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:39,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:39,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320150839] [2023-11-26 10:43:39,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:39,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:39,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:39,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:39,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:39,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:39,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:39,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:39,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:40,042 INFO L124 PetriNetUnfolderBase]: 151/436 cut-off events. [2023-11-26 10:43:40,042 INFO L125 PetriNetUnfolderBase]: For 1235/1246 co-relation queries the response was YES. [2023-11-26 10:43:40,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1565 conditions, 436 events. 151/436 cut-off events. For 1235/1246 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2359 event pairs, 60 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 1530. Up to 188 conditions per place. [2023-11-26 10:43:40,047 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 40 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2023-11-26 10:43:40,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 643 flow [2023-11-26 10:43:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-26 10:43:40,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-26 10:43:40,050 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-26 10:43:40,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-26 10:43:40,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:40,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-26 10:43:40,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,053 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 487 flow. Second operand 4 states and 121 transitions. [2023-11-26 10:43:40,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 643 flow [2023-11-26 10:43:40,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 618 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:40,062 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 529 flow [2023-11-26 10:43:40,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2023-11-26 10:43:40,064 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2023-11-26 10:43:40,064 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 529 flow [2023-11-26 10:43:40,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:40,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:40,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:40,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:40,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 781671131, now seen corresponding path program 2 times [2023-11-26 10:43:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:40,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132871737] [2023-11-26 10:43:40,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:40,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:40,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:40,270 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-26 10:43:40,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:40,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:40,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:40,466 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_47| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_47|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_47| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 10:43:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:40,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:40,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:40,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132871737] [2023-11-26 10:43:40,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132871737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:40,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:40,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789241283] [2023-11-26 10:43:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:40,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:40,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:40,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:40,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:40,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:40,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:40,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:40,643 INFO L124 PetriNetUnfolderBase]: 149/432 cut-off events. [2023-11-26 10:43:40,644 INFO L125 PetriNetUnfolderBase]: For 1479/1482 co-relation queries the response was YES. [2023-11-26 10:43:40,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 432 events. 149/432 cut-off events. For 1479/1482 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2339 event pairs, 60 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 1558. Up to 188 conditions per place. [2023-11-26 10:43:40,649 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 37 selfloop transitions, 17 changer transitions 2/85 dead transitions. [2023-11-26 10:43:40,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 691 flow [2023-11-26 10:43:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-26 10:43:40,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-26 10:43:40,651 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-26 10:43:40,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-26 10:43:40,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:40,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-26 10:43:40,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,653 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,653 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 529 flow. Second operand 4 states and 121 transitions. [2023-11-26 10:43:40,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 691 flow [2023-11-26 10:43:40,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:40,668 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 576 flow [2023-11-26 10:43:40,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-26 10:43:40,670 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2023-11-26 10:43:40,670 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 576 flow [2023-11-26 10:43:40,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:40,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:40,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:40,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:40,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1910688893, now seen corresponding path program 1 times [2023-11-26 10:43:40,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:40,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852752813] [2023-11-26 10:43:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:40,886 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-26 10:43:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:41,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:41,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852752813] [2023-11-26 10:43:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852752813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:41,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:41,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:41,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553739159] [2023-11-26 10:43:41,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:41,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:41,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:41,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:41,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:41,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:41,283 INFO L124 PetriNetUnfolderBase]: 263/655 cut-off events. [2023-11-26 10:43:41,283 INFO L125 PetriNetUnfolderBase]: For 3602/3635 co-relation queries the response was YES. [2023-11-26 10:43:41,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 655 events. 263/655 cut-off events. For 3602/3635 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3729 event pairs, 71 based on Foata normal form. 4/631 useless extension candidates. Maximal degree in co-relation 2623. Up to 357 conditions per place. [2023-11-26 10:43:41,291 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 78 selfloop transitions, 8 changer transitions 12/124 dead transitions. [2023-11-26 10:43:41,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 124 transitions, 1169 flow [2023-11-26 10:43:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2023-11-26 10:43:41,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7041666666666667 [2023-11-26 10:43:41,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 169 transitions. [2023-11-26 10:43:41,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 169 transitions. [2023-11-26 10:43:41,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:41,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 169 transitions. [2023-11-26 10:43:41,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,296 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,296 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 576 flow. Second operand 5 states and 169 transitions. [2023-11-26 10:43:41,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 124 transitions, 1169 flow [2023-11-26 10:43:41,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 1130 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:41,310 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 512 flow [2023-11-26 10:43:41,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-11-26 10:43:41,311 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2023-11-26 10:43:41,313 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 512 flow [2023-11-26 10:43:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:41,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:41,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:41,517 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:41,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:41,517 INFO L85 PathProgramCache]: Analyzing trace with hash -201847540, now seen corresponding path program 1 times [2023-11-26 10:43:41,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:41,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707954448] [2023-11-26 10:43:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:41,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:41,520 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-26 10:43:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:41,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,768 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_48|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_48| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 10:43:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:41,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:41,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:41,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707954448] [2023-11-26 10:43:41,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707954448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:41,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:41,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101492374] [2023-11-26 10:43:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:41,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:41,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:41,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:41,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:41,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:41,917 INFO L124 PetriNetUnfolderBase]: 134/471 cut-off events. [2023-11-26 10:43:41,917 INFO L125 PetriNetUnfolderBase]: For 1925/1928 co-relation queries the response was YES. [2023-11-26 10:43:41,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 471 events. 134/471 cut-off events. For 1925/1928 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2841 event pairs, 67 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 1680. Up to 213 conditions per place. [2023-11-26 10:43:41,923 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 36 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2023-11-26 10:43:41,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 78 transitions, 614 flow [2023-11-26 10:43:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-26 10:43:41,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-26 10:43:41,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-26 10:43:41,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-26 10:43:41,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:41,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-26 10:43:41,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,928 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 512 flow. Second operand 4 states and 118 transitions. [2023-11-26 10:43:41,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 78 transitions, 614 flow [2023-11-26 10:43:41,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 608 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:41,939 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 546 flow [2023-11-26 10:43:41,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2023-11-26 10:43:41,940 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2023-11-26 10:43:41,940 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 546 flow [2023-11-26 10:43:41,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:41,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:41,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:41,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:42,144 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:42,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash 501336626, now seen corresponding path program 2 times [2023-11-26 10:43:42,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:42,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207880994] [2023-11-26 10:43:42,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:42,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:42,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:42,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-26 10:43:42,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:42,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:42,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,375 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_49| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_49| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_49|)))) is different from true [2023-11-26 10:43:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:42,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:42,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207880994] [2023-11-26 10:43:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207880994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:42,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635720844] [2023-11-26 10:43:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:42,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:42,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:42,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:42,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:42,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:42,594 INFO L124 PetriNetUnfolderBase]: 134/475 cut-off events. [2023-11-26 10:43:42,594 INFO L125 PetriNetUnfolderBase]: For 2550/2553 co-relation queries the response was YES. [2023-11-26 10:43:42,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 475 events. 134/475 cut-off events. For 2550/2553 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2880 event pairs, 67 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 1773. Up to 213 conditions per place. [2023-11-26 10:43:42,600 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 38 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-11-26 10:43:42,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 79 transitions, 654 flow [2023-11-26 10:43:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-26 10:43:42,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-26 10:43:42,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-26 10:43:42,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-26 10:43:42,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:42,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-26 10:43:42,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,606 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 546 flow. Second operand 4 states and 118 transitions. [2023-11-26 10:43:42,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 79 transitions, 654 flow [2023-11-26 10:43:42,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 79 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:42,623 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 573 flow [2023-11-26 10:43:42,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=573, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2023-11-26 10:43:42,625 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2023-11-26 10:43:42,625 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 573 flow [2023-11-26 10:43:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:42,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:42,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:42,829 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:42,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash -384403950, now seen corresponding path program 1 times [2023-11-26 10:43:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221256965] [2023-11-26 10:43:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:42,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:42,831 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-26 10:43:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:43,031 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_50| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_50|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_50| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 10:43:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:43,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:43,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221256965] [2023-11-26 10:43:43,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221256965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:43,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:43,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:43,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517197113] [2023-11-26 10:43:43,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:43,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:43,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:43,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:43,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:43,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:43,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:43,203 INFO L124 PetriNetUnfolderBase]: 134/479 cut-off events. [2023-11-26 10:43:43,203 INFO L125 PetriNetUnfolderBase]: For 2999/3002 co-relation queries the response was YES. [2023-11-26 10:43:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 479 events. 134/479 cut-off events. For 2999/3002 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2915 event pairs, 67 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 1854. Up to 213 conditions per place. [2023-11-26 10:43:43,209 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 39 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-11-26 10:43:43,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 80 transitions, 687 flow [2023-11-26 10:43:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-26 10:43:43,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-26 10:43:43,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-26 10:43:43,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-26 10:43:43,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:43,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-26 10:43:43,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,214 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 573 flow. Second operand 4 states and 118 transitions. [2023-11-26 10:43:43,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 80 transitions, 687 flow [2023-11-26 10:43:43,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 80 transitions, 668 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:43,231 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 597 flow [2023-11-26 10:43:43,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=597, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2023-11-26 10:43:43,232 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2023-11-26 10:43:43,232 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 597 flow [2023-11-26 10:43:43,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:43,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:43,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:43,435 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:43,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1133376502, now seen corresponding path program 2 times [2023-11-26 10:43:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:43,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706529926] [2023-11-26 10:43:43,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:43,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:43,437 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-26 10:43:43,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:43,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:43,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:43,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:43,629 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_51| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_51|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_51| (_ bv0 1))))) is different from true [2023-11-26 10:43:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:43,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:43,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:43,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706529926] [2023-11-26 10:43:43,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706529926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:43,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:43,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719152] [2023-11-26 10:43:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:43,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:43,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:43,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:43,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:43,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:43,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:43,816 INFO L124 PetriNetUnfolderBase]: 132/475 cut-off events. [2023-11-26 10:43:43,816 INFO L125 PetriNetUnfolderBase]: For 3363/3366 co-relation queries the response was YES. [2023-11-26 10:43:43,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908 conditions, 475 events. 132/475 cut-off events. For 3363/3366 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2888 event pairs, 67 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 1864. Up to 213 conditions per place. [2023-11-26 10:43:43,822 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 39 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-11-26 10:43:43,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 80 transitions, 703 flow [2023-11-26 10:43:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-11-26 10:43:43,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2023-11-26 10:43:43,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 114 transitions. [2023-11-26 10:43:43,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 114 transitions. [2023-11-26 10:43:43,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:43,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 114 transitions. [2023-11-26 10:43:43,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,826 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 597 flow. Second operand 4 states and 114 transitions. [2023-11-26 10:43:43,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 80 transitions, 703 flow [2023-11-26 10:43:43,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 80 transitions, 686 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:43,841 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 621 flow [2023-11-26 10:43:43,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2023-11-26 10:43:43,843 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2023-11-26 10:43:43,843 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 621 flow [2023-11-26 10:43:43,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:43,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:43,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:44,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:44,047 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:44,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1139658930, now seen corresponding path program 1 times [2023-11-26 10:43:44,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:44,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486240773] [2023-11-26 10:43:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:44,050 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:44,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-26 10:43:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:44,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:44,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:44,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486240773] [2023-11-26 10:43:44,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486240773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:44,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:44,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:44,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7132827] [2023-11-26 10:43:44,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:44,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:44,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:44,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:44,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:44,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-26 10:43:44,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 621 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:44,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-26 10:43:44,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:44,375 INFO L124 PetriNetUnfolderBase]: 206/632 cut-off events. [2023-11-26 10:43:44,375 INFO L125 PetriNetUnfolderBase]: For 6042/6063 co-relation queries the response was YES. [2023-11-26 10:43:44,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 632 events. 206/632 cut-off events. For 6042/6063 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3994 event pairs, 43 based on Foata normal form. 27/649 useless extension candidates. Maximal degree in co-relation 2538. Up to 284 conditions per place. [2023-11-26 10:43:44,382 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 73 selfloop transitions, 3 changer transitions 13/119 dead transitions. [2023-11-26 10:43:44,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 1152 flow [2023-11-26 10:43:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2023-11-26 10:43:44,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2023-11-26 10:43:44,385 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 164 transitions. [2023-11-26 10:43:44,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 164 transitions. [2023-11-26 10:43:44,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:44,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 164 transitions. [2023-11-26 10:43:44,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,389 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 621 flow. Second operand 5 states and 164 transitions. [2023-11-26 10:43:44,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 1152 flow [2023-11-26 10:43:44,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 119 transitions, 1132 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:44,411 INFO L231 Difference]: Finished difference. Result has 103 places, 82 transitions, 641 flow [2023-11-26 10:43:44,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=641, PETRI_PLACES=103, PETRI_TRANSITIONS=82} [2023-11-26 10:43:44,412 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2023-11-26 10:43:44,412 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 82 transitions, 641 flow [2023-11-26 10:43:44,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:44,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:44,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-26 10:43:44,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:44,615 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:44,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1088358541, now seen corresponding path program 1 times [2023-11-26 10:43:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:44,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995185292] [2023-11-26 10:43:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:44,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:44,617 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:44,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-26 10:43:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,851 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_52| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_52|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_52| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 10:43:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:44,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:44,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995185292] [2023-11-26 10:43:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995185292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:44,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508384102] [2023-11-26 10:43:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:44,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:44,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:44,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 82 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:44,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:44,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:45,001 INFO L124 PetriNetUnfolderBase]: 144/529 cut-off events. [2023-11-26 10:43:45,001 INFO L125 PetriNetUnfolderBase]: For 3817/3836 co-relation queries the response was YES. [2023-11-26 10:43:45,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 529 events. 144/529 cut-off events. For 3817/3836 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3403 event pairs, 67 based on Foata normal form. 18/529 useless extension candidates. Maximal degree in co-relation 2233. Up to 222 conditions per place. [2023-11-26 10:43:45,008 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 35 selfloop transitions, 10 changer transitions 6/82 dead transitions. [2023-11-26 10:43:45,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 82 transitions, 739 flow [2023-11-26 10:43:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-26 10:43:45,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-26 10:43:45,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-26 10:43:45,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-26 10:43:45,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:45,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-26 10:43:45,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,012 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,012 INFO L175 Difference]: Start difference. First operand has 103 places, 82 transitions, 641 flow. Second operand 4 states and 118 transitions. [2023-11-26 10:43:45,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 82 transitions, 739 flow [2023-11-26 10:43:45,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 82 transitions, 724 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:45,029 INFO L231 Difference]: Finished difference. Result has 103 places, 76 transitions, 609 flow [2023-11-26 10:43:45,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=103, PETRI_TRANSITIONS=76} [2023-11-26 10:43:45,030 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2023-11-26 10:43:45,031 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 76 transitions, 609 flow [2023-11-26 10:43:45,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:45,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:45,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:45,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:45,234 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:45,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1767231813, now seen corresponding path program 2 times [2023-11-26 10:43:45,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:45,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981928212] [2023-11-26 10:43:45,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:45,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:45,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:45,237 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:45,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-26 10:43:45,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:45,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:45,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:45,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:45,448 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_53| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_53|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_53| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 10:43:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:45,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:45,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981928212] [2023-11-26 10:43:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981928212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:45,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:45,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364876726] [2023-11-26 10:43:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:45,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:45,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:45,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:45,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 76 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:45,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:45,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:45,692 INFO L124 PetriNetUnfolderBase]: 136/517 cut-off events. [2023-11-26 10:43:45,693 INFO L125 PetriNetUnfolderBase]: For 4509/4528 co-relation queries the response was YES. [2023-11-26 10:43:45,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 517 events. 136/517 cut-off events. For 4509/4528 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3318 event pairs, 67 based on Foata normal form. 18/517 useless extension candidates. Maximal degree in co-relation 2175. Up to 214 conditions per place. [2023-11-26 10:43:45,700 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 34 selfloop transitions, 9 changer transitions 3/76 dead transitions. [2023-11-26 10:43:45,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 76 transitions, 699 flow [2023-11-26 10:43:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-26 10:43:45,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-26 10:43:45,703 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-26 10:43:45,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-26 10:43:45,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:45,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-26 10:43:45,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,707 INFO L175 Difference]: Start difference. First operand has 103 places, 76 transitions, 609 flow. Second operand 4 states and 118 transitions. [2023-11-26 10:43:45,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 76 transitions, 699 flow [2023-11-26 10:43:45,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 76 transitions, 666 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-26 10:43:45,729 INFO L231 Difference]: Finished difference. Result has 100 places, 73 transitions, 570 flow [2023-11-26 10:43:45,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=570, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2023-11-26 10:43:45,730 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2023-11-26 10:43:45,731 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 570 flow [2023-11-26 10:43:45,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:45,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:45,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:45,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:45,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:45,934 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:45,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash 748190225, now seen corresponding path program 3 times [2023-11-26 10:43:45,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:45,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883101935] [2023-11-26 10:43:45,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:43:45,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:45,937 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:45,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-26 10:43:46,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-26 10:43:46,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:46,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:46,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:46,145 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_54| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_54| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_54|)))) is different from true [2023-11-26 10:43:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:46,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:46,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:46,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883101935] [2023-11-26 10:43:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883101935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:46,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:46,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:46,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136614693] [2023-11-26 10:43:46,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:46,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:46,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:46,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:46,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:46,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:46,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:46,328 INFO L124 PetriNetUnfolderBase]: 119/496 cut-off events. [2023-11-26 10:43:46,328 INFO L125 PetriNetUnfolderBase]: For 4122/4139 co-relation queries the response was YES. [2023-11-26 10:43:46,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 496 events. 119/496 cut-off events. For 4122/4139 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3229 event pairs, 67 based on Foata normal form. 16/496 useless extension candidates. Maximal degree in co-relation 2033. Up to 214 conditions per place. [2023-11-26 10:43:46,333 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 32 selfloop transitions, 6 changer transitions 5/73 dead transitions. [2023-11-26 10:43:46,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 73 transitions, 656 flow [2023-11-26 10:43:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-26 10:43:46,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-26 10:43:46,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-26 10:43:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-26 10:43:46,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:46,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-26 10:43:46,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,337 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,338 INFO L175 Difference]: Start difference. First operand has 100 places, 73 transitions, 570 flow. Second operand 4 states and 118 transitions. [2023-11-26 10:43:46,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 73 transitions, 656 flow [2023-11-26 10:43:46,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 73 transitions, 608 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-26 10:43:46,352 INFO L231 Difference]: Finished difference. Result has 97 places, 68 transitions, 468 flow [2023-11-26 10:43:46,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=468, PETRI_PLACES=97, PETRI_TRANSITIONS=68} [2023-11-26 10:43:46,353 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2023-11-26 10:43:46,354 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 68 transitions, 468 flow [2023-11-26 10:43:46,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:46,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:46,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:46,557 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:46,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash -44978703, now seen corresponding path program 1 times [2023-11-26 10:43:46,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:46,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919393048] [2023-11-26 10:43:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:46,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:46,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:46,559 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:46,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-26 10:43:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:46,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:46,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:46,756 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_55| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_55|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_55| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 10:43:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:46,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:46,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919393048] [2023-11-26 10:43:46,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919393048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:46,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:46,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:46,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288122286] [2023-11-26 10:43:46,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:46,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:46,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:46,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 68 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:46,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:46,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:46,953 INFO L124 PetriNetUnfolderBase]: 108/458 cut-off events. [2023-11-26 10:43:46,954 INFO L125 PetriNetUnfolderBase]: For 3193/3206 co-relation queries the response was YES. [2023-11-26 10:43:46,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 458 events. 108/458 cut-off events. For 3193/3206 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2914 event pairs, 67 based on Foata normal form. 12/454 useless extension candidates. Maximal degree in co-relation 1757. Up to 214 conditions per place. [2023-11-26 10:43:46,958 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 29 selfloop transitions, 5 changer transitions 4/68 dead transitions. [2023-11-26 10:43:46,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 68 transitions, 544 flow [2023-11-26 10:43:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-26 10:43:46,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-26 10:43:46,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-26 10:43:46,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-26 10:43:46,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:46,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-26 10:43:46,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,961 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,962 INFO L175 Difference]: Start difference. First operand has 97 places, 68 transitions, 468 flow. Second operand 4 states and 118 transitions. [2023-11-26 10:43:46,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 68 transitions, 544 flow [2023-11-26 10:43:46,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 68 transitions, 501 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-26 10:43:46,975 INFO L231 Difference]: Finished difference. Result has 93 places, 64 transitions, 411 flow [2023-11-26 10:43:46,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=93, PETRI_TRANSITIONS=64} [2023-11-26 10:43:46,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2023-11-26 10:43:46,976 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 64 transitions, 411 flow [2023-11-26 10:43:46,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:46,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:46,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:46,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:47,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:47,179 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:47,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1746844971, now seen corresponding path program 2 times [2023-11-26 10:43:47,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:47,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436596106] [2023-11-26 10:43:47,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:47,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:47,181 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:47,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-26 10:43:47,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:47,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:47,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:47,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:47,392 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_56| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_56| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_56|)))) is different from true [2023-11-26 10:43:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:47,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:47,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436596106] [2023-11-26 10:43:47,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436596106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:47,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:47,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:47,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086276261] [2023-11-26 10:43:47,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:47,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:47,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:47,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:47,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-26 10:43:47,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:47,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 64 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:47,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:47,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:47,558 INFO L124 PetriNetUnfolderBase]: 105/428 cut-off events. [2023-11-26 10:43:47,559 INFO L125 PetriNetUnfolderBase]: For 2471/2480 co-relation queries the response was YES. [2023-11-26 10:43:47,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 428 events. 105/428 cut-off events. For 2471/2480 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2667 event pairs, 67 based on Foata normal form. 8/420 useless extension candidates. Maximal degree in co-relation 1581. Up to 214 conditions per place. [2023-11-26 10:43:47,562 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 17 selfloop transitions, 1 changer transitions 20/63 dead transitions. [2023-11-26 10:43:47,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 63 transitions, 463 flow [2023-11-26 10:43:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-26 10:43:47,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2023-11-26 10:43:47,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-26 10:43:47,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-26 10:43:47,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:47,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-26 10:43:47,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,584 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,584 INFO L175 Difference]: Start difference. First operand has 93 places, 64 transitions, 411 flow. Second operand 4 states and 113 transitions. [2023-11-26 10:43:47,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 63 transitions, 463 flow [2023-11-26 10:43:47,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 63 transitions, 419 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-26 10:43:47,597 INFO L231 Difference]: Finished difference. Result has 85 places, 43 transitions, 216 flow [2023-11-26 10:43:47,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=85, PETRI_TRANSITIONS=43} [2023-11-26 10:43:47,598 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2023-11-26 10:43:47,598 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 43 transitions, 216 flow [2023-11-26 10:43:47,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:47,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:47,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:47,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:47,802 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:47,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash -49682695, now seen corresponding path program 1 times [2023-11-26 10:43:47,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709338399] [2023-11-26 10:43:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:47,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:47,804 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:47,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-26 10:43:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:47,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:43:47,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:47,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:47,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:47,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709338399] [2023-11-26 10:43:47,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709338399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:47,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:47,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:47,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849911668] [2023-11-26 10:43:47,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:47,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:47,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:47,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-26 10:43:47,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 43 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:47,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-26 10:43:47,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:48,227 INFO L124 PetriNetUnfolderBase]: 94/302 cut-off events. [2023-11-26 10:43:48,227 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2023-11-26 10:43:48,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 302 events. 94/302 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 31 based on Foata normal form. 5/305 useless extension candidates. Maximal degree in co-relation 917. Up to 95 conditions per place. [2023-11-26 10:43:48,231 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 38 selfloop transitions, 6 changer transitions 23/85 dead transitions. [2023-11-26 10:43:48,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 570 flow [2023-11-26 10:43:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:43:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:43:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 307 transitions. [2023-11-26 10:43:48,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814393939393939 [2023-11-26 10:43:48,233 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 307 transitions. [2023-11-26 10:43:48,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 307 transitions. [2023-11-26 10:43:48,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:48,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 307 transitions. [2023-11-26 10:43:48,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:48,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:48,236 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:48,237 INFO L175 Difference]: Start difference. First operand has 85 places, 43 transitions, 216 flow. Second operand 11 states and 307 transitions. [2023-11-26 10:43:48,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 570 flow [2023-11-26 10:43:48,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 469 flow, removed 37 selfloop flow, removed 13 redundant places. [2023-11-26 10:43:48,242 INFO L231 Difference]: Finished difference. Result has 72 places, 40 transitions, 189 flow [2023-11-26 10:43:48,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=189, PETRI_PLACES=72, PETRI_TRANSITIONS=40} [2023-11-26 10:43:48,242 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2023-11-26 10:43:48,243 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 40 transitions, 189 flow [2023-11-26 10:43:48,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:48,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:48,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:48,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:48,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:48,446 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-26 10:43:48,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash 216070937, now seen corresponding path program 2 times [2023-11-26 10:43:48,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:48,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328314079] [2023-11-26 10:43:48,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:48,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:48,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:48,448 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:48,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-26 10:43:48,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:48,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-26 10:43:48,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:48,579 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-26 10:43:48,579 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:43:48,580 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-26 10:43:48,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-26 10:43:48,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-26 10:43:48,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-26 10:43:48,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-26 10:43:48,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:48,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:48,786 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:48,790 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:43:48,790 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:43:48,832 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-26 10:43:48,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:43:48 BasicIcfg [2023-11-26 10:43:48,859 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:43:48,860 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:43:48,860 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:43:48,860 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:43:48,861 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:32" (3/4) ... [2023-11-26 10:43:48,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:43:48,864 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:43:48,864 INFO L158 Benchmark]: Toolchain (without parser) took 17779.69ms. Allocated memory was 90.2MB in the beginning and 192.9MB in the end (delta: 102.8MB). Free memory was 64.4MB in the beginning and 144.1MB in the end (delta: -79.7MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2023-11-26 10:43:48,865 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 67.0MB in the end (delta: 96.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:48,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 797.53ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 64.2MB in the beginning and 109.2MB in the end (delta: -45.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-11-26 10:43:48,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.82ms. Allocated memory is still 132.1MB. Free memory was 109.2MB in the beginning and 106.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:48,866 INFO L158 Benchmark]: Boogie Preprocessor took 100.02ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:48,872 INFO L158 Benchmark]: RCFGBuilder took 786.55ms. Allocated memory is still 132.1MB. Free memory was 104.6MB in the beginning and 70.5MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-26 10:43:48,872 INFO L158 Benchmark]: TraceAbstraction took 15989.05ms. Allocated memory was 132.1MB in the beginning and 192.9MB in the end (delta: 60.8MB). Free memory was 69.9MB in the beginning and 144.1MB in the end (delta: -74.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:48,873 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 192.9MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:48,875 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 67.0MB in the end (delta: 96.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 797.53ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 64.2MB in the beginning and 109.2MB in the end (delta: -45.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.82ms. Allocated memory is still 132.1MB. Free memory was 109.2MB in the beginning and 106.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.02ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 786.55ms. Allocated memory is still 132.1MB. Free memory was 104.6MB in the beginning and 70.5MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15989.05ms. Allocated memory was 132.1MB in the beginning and 192.9MB in the end (delta: 60.8MB). Free memory was 69.9MB in the beginning and 144.1MB in the end (delta: -74.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 192.9MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 683]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 683. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L712] EXPR 0 pendingIo = lp + 1 VAL [lp=1, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; VAL [\result=0, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=2, status=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=2, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] CALL 0 reach_error() [L683] COND FALSE 0 !(0) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 57 locations, 5 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: 15.8s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 366 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 647 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1282 IncrementalHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 43 mSDtfsCounter, 1282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=641occurred in iteration=19, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 525 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 473 ConstructedInterpolants, 81 QuantifiedInterpolants, 5024 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1590 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 10:43:48,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da66690-8344-4afa-ac2d-cd9e3f1befb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample