./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --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_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya --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 a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:54:22,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:54:22,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 03:54:22,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:54:22,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:54:22,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:54:22,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:54:22,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:54:22,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:54:22,810 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:54:22,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:54:22,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:54:22,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:54:22,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:54:22,813 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:54:22,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:54:22,815 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:54:22,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:54:22,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:54:22,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:54:22,816 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:54:22,821 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:54:22,821 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:54:22,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:54:22,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:54:22,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:54:22,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:54:22,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:54:22,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:54:22,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:54:22,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:54:22,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:54:22,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:54:22,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:54:22,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:54:22,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:54:22,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:54:22,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:54:22,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:54:22,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:54:22,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:54:22,827 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_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 [2023-11-29 03:54:23,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:54:23,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:54:23,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:54:23,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:54:23,118 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:54:23,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-29 03:54:25,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:54:26,093 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:54:26,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-29 03:54:26,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/data/3e4394c2c/2021d6612e514242b36c1106013053ba/FLAG354141dd1 [2023-11-29 03:54:26,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/data/3e4394c2c/2021d6612e514242b36c1106013053ba [2023-11-29 03:54:26,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:54:26,124 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:54:26,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:54:26,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:54:26,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:54:26,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619445eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26, skipping insertion in model container [2023-11-29 03:54:26,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:54:26,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:54:26,388 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:54:26,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:54:26,438 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:54:26,438 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:54:26,446 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:54:26,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26 WrapperNode [2023-11-29 03:54:26,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:54:26,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:54:26,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:54:26,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:54:26,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,505 INFO L138 Inliner]: procedures = 23, calls = 177, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 410 [2023-11-29 03:54:26,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:54:26,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:54:26,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:54:26,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:54:26,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,548 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 03:54:26,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:54:26,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:54:26,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:54:26,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:54:26,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (1/1) ... [2023-11-29 03:54:26,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:54:26,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:54:26,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:54:26,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd82305-0ec7-416a-92cb-32ffdecf2e78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:54:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:54:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:54:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:54:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:54:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:54:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:54:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:54:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 03:54:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 03:54:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:54:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:54:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:54:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:54:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:54:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:54:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:54:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:54:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:54:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:54:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:54:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:54:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:54:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:54:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:54:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:54:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:54:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:54:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:54:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:54:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:54:26,654 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:54:26,798 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:54:26,800 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:54:27,258 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:54:27,707 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:54:27,707 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 03:54:27,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:27 BoogieIcfgContainer [2023-11-29 03:54:27,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:54:27,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:54:27,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:54:27,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:54:27,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:54:26" (1/3) ... [2023-11-29 03:54:27,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d02633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:54:27, skipping insertion in model container [2023-11-29 03:54:27,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:26" (2/3) ... [2023-11-29 03:54:27,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d02633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:54:27, skipping insertion in model container [2023-11-29 03:54:27,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:27" (3/3) ... [2023-11-29 03:54:27,717 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2023-11-29 03:54:27,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:54:27,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 03:54:27,741 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:54:27,817 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 03:54:27,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 117 transitions, 262 flow [2023-11-29 03:54:27,911 INFO L124 PetriNetUnfolderBase]: 0/113 cut-off events. [2023-11-29 03:54:27,912 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 03:54:27,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 113 events. 0/113 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 280 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-29 03:54:27,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 117 transitions, 262 flow [2023-11-29 03:54:27,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 112 transitions, 248 flow [2023-11-29 03:54:27,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:54:27,938 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;@4245c910, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:54:27,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 03:54:27,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:54:27,942 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 03:54:27,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:54:27,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:54:27,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:54:27,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:54:27,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:27,950 INFO L85 PathProgramCache]: Analyzing trace with hash 27739, now seen corresponding path program 1 times [2023-11-29 03:54:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:27,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179209426] [2023-11-29 03:54:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:28,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:28,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179209426] [2023-11-29 03:54:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179209426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:28,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:28,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:54:28,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859978662] [2023-11-29 03:54:28,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:28,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:54:28,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 117 [2023-11-29 03:54:28,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:28,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:54:28,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 117 [2023-11-29 03:54:28,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:54:38,471 INFO L124 PetriNetUnfolderBase]: 69712/107986 cut-off events. [2023-11-29 03:54:38,471 INFO L125 PetriNetUnfolderBase]: For 3207/3207 co-relation queries the response was YES. [2023-11-29 03:54:38,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202308 conditions, 107986 events. 69712/107986 cut-off events. For 3207/3207 co-relation queries the response was YES. Maximal size of possible extension queue 3706. Compared 939947 event pairs, 69712 based on Foata normal form. 1/103698 useless extension candidates. Maximal degree in co-relation 192362. Up to 91856 conditions per place. [2023-11-29 03:54:39,228 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 47 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2023-11-29 03:54:39,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 108 transitions, 336 flow [2023-11-29 03:54:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:54:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-29 03:54:39,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7008547008547008 [2023-11-29 03:54:39,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-29 03:54:39,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-29 03:54:39,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:54:39,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-29 03:54:39,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:39,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:39,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:39,255 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 248 flow. Second operand 3 states and 246 transitions. [2023-11-29 03:54:39,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 108 transitions, 336 flow [2023-11-29 03:54:39,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 320 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 03:54:39,365 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 226 flow [2023-11-29 03:54:39,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2023-11-29 03:54:39,369 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -10 predicate places. [2023-11-29 03:54:39,370 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 226 flow [2023-11-29 03:54:39,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:39,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:54:39,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:54:39,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:54:39,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:54:39,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash 27740, now seen corresponding path program 1 times [2023-11-29 03:54:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890808734] [2023-11-29 03:54:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890808734] [2023-11-29 03:54:39,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890808734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:39,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:39,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:54:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965015809] [2023-11-29 03:54:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:39,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:39,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:54:39,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 117 [2023-11-29 03:54:39,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:39,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:54:39,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 117 [2023-11-29 03:54:39,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:54:45,319 INFO L124 PetriNetUnfolderBase]: 46384/74262 cut-off events. [2023-11-29 03:54:45,320 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-11-29 03:54:45,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137052 conditions, 74262 events. 46384/74262 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 645808 event pairs, 46384 based on Foata normal form. 6562/77214 useless extension candidates. Maximal degree in co-relation 137046. Up to 61966 conditions per place. [2023-11-29 03:54:45,754 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 45 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-29 03:54:45,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 106 transitions, 314 flow [2023-11-29 03:54:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:54:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-11-29 03:54:45,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2023-11-29 03:54:45,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-11-29 03:54:45,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-11-29 03:54:45,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:54:45,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-11-29 03:54:45,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:45,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:45,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:45,763 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 226 flow. Second operand 3 states and 249 transitions. [2023-11-29 03:54:45,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 106 transitions, 314 flow [2023-11-29 03:54:45,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 106 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:54:45,767 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 223 flow [2023-11-29 03:54:45,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2023-11-29 03:54:45,768 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -11 predicate places. [2023-11-29 03:54:45,769 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 223 flow [2023-11-29 03:54:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:45,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:54:45,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:54:45,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:54:45,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:54:45,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:45,770 INFO L85 PathProgramCache]: Analyzing trace with hash 827327823, now seen corresponding path program 1 times [2023-11-29 03:54:45,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:45,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096383249] [2023-11-29 03:54:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:45,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:45,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096383249] [2023-11-29 03:54:45,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096383249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:45,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:54:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49984274] [2023-11-29 03:54:45,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:54:45,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 117 [2023-11-29 03:54:45,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:45,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:54:45,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 117 [2023-11-29 03:54:45,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:54:51,725 INFO L124 PetriNetUnfolderBase]: 48336/75491 cut-off events. [2023-11-29 03:54:51,725 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2023-11-29 03:54:51,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140972 conditions, 75491 events. 48336/75491 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 2571. Compared 637894 event pairs, 48336 based on Foata normal form. 0/73344 useless extension candidates. Maximal degree in co-relation 140965. Up to 64656 conditions per place. [2023-11-29 03:54:52,026 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 47 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2023-11-29 03:54:52,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 315 flow [2023-11-29 03:54:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:54:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-29 03:54:52,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.698005698005698 [2023-11-29 03:54:52,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-29 03:54:52,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-29 03:54:52,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:54:52,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-29 03:54:52,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:52,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:52,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:52,034 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 223 flow. Second operand 3 states and 245 transitions. [2023-11-29 03:54:52,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 315 flow [2023-11-29 03:54:52,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 104 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:54:52,037 INFO L231 Difference]: Finished difference. Result has 113 places, 104 transitions, 220 flow [2023-11-29 03:54:52,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2023-11-29 03:54:52,039 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -12 predicate places. [2023-11-29 03:54:52,039 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 220 flow [2023-11-29 03:54:52,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:52,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:54:52,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:54:52,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:54:52,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:54:52,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash 827327824, now seen corresponding path program 1 times [2023-11-29 03:54:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:52,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777476714] [2023-11-29 03:54:52,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:52,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:52,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:52,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777476714] [2023-11-29 03:54:52,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777476714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:52,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:52,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:54:52,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416990666] [2023-11-29 03:54:52,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:52,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:52,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:54:52,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 117 [2023-11-29 03:54:52,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:52,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:54:52,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 117 [2023-11-29 03:54:52,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:54:57,820 INFO L124 PetriNetUnfolderBase]: 48336/74759 cut-off events. [2023-11-29 03:54:57,821 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2023-11-29 03:54:57,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140241 conditions, 74759 events. 48336/74759 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 2564. Compared 623531 event pairs, 48336 based on Foata normal form. 0/72612 useless extension candidates. Maximal degree in co-relation 140233. Up to 64656 conditions per place. [2023-11-29 03:54:58,192 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 47 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-11-29 03:54:58,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 312 flow [2023-11-29 03:54:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:54:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-29 03:54:58,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.698005698005698 [2023-11-29 03:54:58,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-29 03:54:58,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-29 03:54:58,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:54:58,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-29 03:54:58,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:58,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:58,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:58,200 INFO L175 Difference]: Start difference. First operand has 113 places, 104 transitions, 220 flow. Second operand 3 states and 245 transitions. [2023-11-29 03:54:58,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 312 flow [2023-11-29 03:54:58,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 102 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:54:58,202 INFO L231 Difference]: Finished difference. Result has 112 places, 102 transitions, 217 flow [2023-11-29 03:54:58,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=112, PETRI_TRANSITIONS=102} [2023-11-29 03:54:58,203 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -13 predicate places. [2023-11-29 03:54:58,203 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 102 transitions, 217 flow [2023-11-29 03:54:58,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:58,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:54:58,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:54:58,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:54:58,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:54:58,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1893177183, now seen corresponding path program 1 times [2023-11-29 03:54:58,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:58,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958882631] [2023-11-29 03:54:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:58,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958882631] [2023-11-29 03:54:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958882631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:58,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:54:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540633611] [2023-11-29 03:54:58,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:58,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:58,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:58,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:54:58,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 117 [2023-11-29 03:54:58,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 102 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:54:58,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:54:58,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 117 [2023-11-29 03:54:58,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:04,124 INFO L124 PetriNetUnfolderBase]: 46672/73107 cut-off events. [2023-11-29 03:55:04,124 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2023-11-29 03:55:04,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136350 conditions, 73107 events. 46672/73107 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 618101 event pairs, 46672 based on Foata normal form. 0/71133 useless extension candidates. Maximal degree in co-relation 136341. Up to 62416 conditions per place. [2023-11-29 03:55:04,459 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 47 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2023-11-29 03:55:04,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 100 transitions, 309 flow [2023-11-29 03:55:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:55:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-29 03:55:04,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.698005698005698 [2023-11-29 03:55:04,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-29 03:55:04,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-29 03:55:04,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:04,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-29 03:55:04,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,464 INFO L175 Difference]: Start difference. First operand has 112 places, 102 transitions, 217 flow. Second operand 3 states and 245 transitions. [2023-11-29 03:55:04,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 100 transitions, 309 flow [2023-11-29 03:55:04,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 100 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:04,466 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 214 flow [2023-11-29 03:55:04,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2023-11-29 03:55:04,467 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -14 predicate places. [2023-11-29 03:55:04,467 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 214 flow [2023-11-29 03:55:04,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:04,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:04,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:55:04,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:55:04,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:04,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1893177182, now seen corresponding path program 1 times [2023-11-29 03:55:04,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:04,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552825103] [2023-11-29 03:55:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:04,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:04,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552825103] [2023-11-29 03:55:04,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552825103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:04,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:04,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:04,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705497488] [2023-11-29 03:55:04,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:04,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:04,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:04,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 117 [2023-11-29 03:55:04,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:04,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 117 [2023-11-29 03:55:04,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:10,213 INFO L124 PetriNetUnfolderBase]: 46384/72618 cut-off events. [2023-11-29 03:55:10,213 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-11-29 03:55:10,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135412 conditions, 72618 events. 46384/72618 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 614245 event pairs, 46384 based on Foata normal form. 162/70814 useless extension candidates. Maximal degree in co-relation 135402. Up to 61966 conditions per place. [2023-11-29 03:55:10,765 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 45 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-11-29 03:55:10,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 302 flow [2023-11-29 03:55:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:55:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-11-29 03:55:10,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2023-11-29 03:55:10,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-11-29 03:55:10,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-11-29 03:55:10,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:10,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-11-29 03:55:10,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:10,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:10,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:10,770 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 214 flow. Second operand 3 states and 249 transitions. [2023-11-29 03:55:10,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 302 flow [2023-11-29 03:55:10,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 98 transitions, 301 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:10,772 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 211 flow [2023-11-29 03:55:10,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2023-11-29 03:55:10,773 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -15 predicate places. [2023-11-29 03:55:10,774 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 211 flow [2023-11-29 03:55:10,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:10,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:10,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:10,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:55:10,775 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:55:10,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1870029603, now seen corresponding path program 1 times [2023-11-29 03:55:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526368945] [2023-11-29 03:55:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:10,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:10,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:10,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526368945] [2023-11-29 03:55:10,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526368945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:10,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:10,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:10,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636135214] [2023-11-29 03:55:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:10,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:10,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 117 [2023-11-29 03:55:10,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:10,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:10,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 117 [2023-11-29 03:55:10,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:16,759 INFO L124 PetriNetUnfolderBase]: 48336/75677 cut-off events. [2023-11-29 03:55:16,759 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-11-29 03:55:16,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141162 conditions, 75677 events. 48336/75677 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 2589. Compared 640460 event pairs, 48336 based on Foata normal form. 0/73631 useless extension candidates. Maximal degree in co-relation 141151. Up to 64656 conditions per place. [2023-11-29 03:55:17,183 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 47 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-11-29 03:55:17,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 96 transitions, 303 flow [2023-11-29 03:55:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:55:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-29 03:55:17,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.698005698005698 [2023-11-29 03:55:17,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-29 03:55:17,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-29 03:55:17,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:17,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-29 03:55:17,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,189 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 211 flow. Second operand 3 states and 245 transitions. [2023-11-29 03:55:17,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 96 transitions, 303 flow [2023-11-29 03:55:17,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 96 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:17,193 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 208 flow [2023-11-29 03:55:17,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2023-11-29 03:55:17,194 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -16 predicate places. [2023-11-29 03:55:17,194 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 208 flow [2023-11-29 03:55:17,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:17,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:17,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:55:17,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:55:17,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1870029604, now seen corresponding path program 1 times [2023-11-29 03:55:17,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:17,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586016706] [2023-11-29 03:55:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:17,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586016706] [2023-11-29 03:55:17,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586016706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:17,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901637008] [2023-11-29 03:55:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:17,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 117 [2023-11-29 03:55:17,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:17,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 117 [2023-11-29 03:55:17,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:22,912 INFO L124 PetriNetUnfolderBase]: 46384/72546 cut-off events. [2023-11-29 03:55:22,912 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-11-29 03:55:23,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135342 conditions, 72546 events. 46384/72546 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 613213 event pairs, 46384 based on Foata normal form. 738/71390 useless extension candidates. Maximal degree in co-relation 135330. Up to 61966 conditions per place. [2023-11-29 03:55:23,299 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 45 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-29 03:55:23,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 94 transitions, 296 flow [2023-11-29 03:55:23,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:55:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-11-29 03:55:23,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2023-11-29 03:55:23,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-11-29 03:55:23,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-11-29 03:55:23,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:23,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-11-29 03:55:23,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:23,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:23,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:23,304 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 208 flow. Second operand 3 states and 249 transitions. [2023-11-29 03:55:23,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 94 transitions, 296 flow [2023-11-29 03:55:23,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 94 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:23,306 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 205 flow [2023-11-29 03:55:23,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2023-11-29 03:55:23,307 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -17 predicate places. [2023-11-29 03:55:23,307 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 205 flow [2023-11-29 03:55:23,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:23,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:23,308 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:23,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:55:23,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:55:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1883550420, now seen corresponding path program 1 times [2023-11-29 03:55:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265649500] [2023-11-29 03:55:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265649500] [2023-11-29 03:55:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265649500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:55:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956358633] [2023-11-29 03:55:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:55:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:55:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:55:23,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 117 [2023-11-29 03:55:23,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 94 transitions, 205 flow. Second operand has 11 states, 11 states have (on average 65.9090909090909) internal successors, (725), 11 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:23,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:23,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 117 [2023-11-29 03:55:23,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:38,197 INFO L124 PetriNetUnfolderBase]: 130050/193163 cut-off events. [2023-11-29 03:55:38,197 INFO L125 PetriNetUnfolderBase]: For 1705/1705 co-relation queries the response was YES. [2023-11-29 03:55:38,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369890 conditions, 193163 events. 130050/193163 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 5125. Compared 1642125 event pairs, 43998 based on Foata normal form. 1/192566 useless extension candidates. Maximal degree in co-relation 369877. Up to 60072 conditions per place. [2023-11-29 03:55:39,420 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 320 selfloop transitions, 25 changer transitions 27/412 dead transitions. [2023-11-29 03:55:39,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 412 transitions, 1636 flow [2023-11-29 03:55:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:55:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:55:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1227 transitions. [2023-11-29 03:55:39,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7490842490842491 [2023-11-29 03:55:39,427 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1227 transitions. [2023-11-29 03:55:39,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1227 transitions. [2023-11-29 03:55:39,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:39,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1227 transitions. [2023-11-29 03:55:39,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.64285714285714) internal successors, (1227), 14 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:39,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 117.0) internal successors, (1755), 15 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:39,435 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 117.0) internal successors, (1755), 15 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:39,435 INFO L175 Difference]: Start difference. First operand has 108 places, 94 transitions, 205 flow. Second operand 14 states and 1227 transitions. [2023-11-29 03:55:39,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 412 transitions, 1636 flow [2023-11-29 03:55:39,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 412 transitions, 1635 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:39,441 INFO L231 Difference]: Finished difference. Result has 125 places, 123 transitions, 359 flow [2023-11-29 03:55:39,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=359, PETRI_PLACES=125, PETRI_TRANSITIONS=123} [2023-11-29 03:55:39,442 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2023-11-29 03:55:39,442 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 123 transitions, 359 flow [2023-11-29 03:55:39,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.9090909090909) internal successors, (725), 11 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:39,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:39,443 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:39,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:55:39,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 03:55:39,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash 643719606, now seen corresponding path program 2 times [2023-11-29 03:55:39,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:39,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584905408] [2023-11-29 03:55:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:39,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:40,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584905408] [2023-11-29 03:55:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584905408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:55:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637345381] [2023-11-29 03:55:40,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:40,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:55:40,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:55:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:55:40,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 117 [2023-11-29 03:55:40,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 123 transitions, 359 flow. Second operand has 10 states, 10 states have (on average 62.9) internal successors, (629), 10 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:40,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:40,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 117 [2023-11-29 03:55:40,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand