./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-time-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-time-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbdf820325bad974beb5f3994ba78abc0ad853157d83dd91eac05e8acb05e8a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:01,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:01,946 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:04:01,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:01,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:02,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:02,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:02,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:02,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:02,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:02,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:02,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:02,027 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:02,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:02,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:02,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:02,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:02,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:02,032 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:04:02,033 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:04:02,033 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:04:02,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:02,034 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:04:02,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:02,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:02,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:02,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:02,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:02,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:02,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:02,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:02,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:02,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:02,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:02,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:02,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:02,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:02,043 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:02,043 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_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbdf820325bad974beb5f3994ba78abc0ad853157d83dd91eac05e8acb05e8a2 [2023-11-06 22:04:02,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:02,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:02,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:02,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:02,467 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:02,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2023-11-06 22:04:06,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:06,283 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:06,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2023-11-06 22:04:06,304 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/data/36072204e/2396f149d5fd40c69a53125fe3b2ac29/FLAGa228253d6 [2023-11-06 22:04:06,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/data/36072204e/2396f149d5fd40c69a53125fe3b2ac29 [2023-11-06 22:04:06,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:06,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:06,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:06,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:06,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:06,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f0edde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06, skipping insertion in model container [2023-11-06 22:04:06,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,400 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:06,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:06,636 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:06,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:06,676 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:06,676 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:06,686 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:06,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06 WrapperNode [2023-11-06 22:04:06,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:06,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:06,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:06,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:06,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,753 INFO L138 Inliner]: procedures = 23, calls = 40, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 224 [2023-11-06 22:04:06,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:06,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:06,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:06,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:06,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,817 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:06,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:06,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:06,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:06,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:06,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:06,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:06,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:04:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:04:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:04:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:04:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:04:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:04:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:04:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:04:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:04:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:04:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:04:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:06,932 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:04:07,131 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:07,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:07,850 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:08,363 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:08,363 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:04:08,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:08 BoogieIcfgContainer [2023-11-06 22:04:08,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:08,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:08,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:08,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:08,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:06" (1/3) ... [2023-11-06 22:04:08,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d85af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:08, skipping insertion in model container [2023-11-06 22:04:08,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (2/3) ... [2023-11-06 22:04:08,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d85af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:08, skipping insertion in model container [2023-11-06 22:04:08,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:08" (3/3) ... [2023-11-06 22:04:08,386 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2023-11-06 22:04:08,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:08,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 22:04:08,415 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:04:08,537 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:04:08,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 134 transitions, 289 flow [2023-11-06 22:04:08,725 INFO L124 PetriNetUnfolderBase]: 1/131 cut-off events. [2023-11-06 22:04:08,725 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:04:08,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 1/131 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-06 22:04:08,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 134 transitions, 289 flow [2023-11-06 22:04:08,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 126 transitions, 270 flow [2023-11-06 22:04:08,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:08,773 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 126 transitions, 270 flow [2023-11-06 22:04:08,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 126 transitions, 270 flow [2023-11-06 22:04:08,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 126 transitions, 270 flow [2023-11-06 22:04:08,879 INFO L124 PetriNetUnfolderBase]: 1/126 cut-off events. [2023-11-06 22:04:08,881 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:04:08,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 1/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-06 22:04:08,886 INFO L119 LiptonReduction]: Number of co-enabled transitions 378 [2023-11-06 22:04:18,259 INFO L134 LiptonReduction]: Checked pairs total: 626 [2023-11-06 22:04:18,259 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-11-06 22:04:18,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:18,288 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;@4369e2a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:18,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:04:18,291 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:04:18,291 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:04:18,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:18,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:18,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:04:18,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:18,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 871, now seen corresponding path program 1 times [2023-11-06 22:04:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:18,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589104730] [2023-11-06 22:04:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:18,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:18,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589104730] [2023-11-06 22:04:18,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589104730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:18,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:18,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:04:18,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108204588] [2023-11-06 22:04:18,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:18,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:04:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:04:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:04:18,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 262 [2023-11-06 22:04:18,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 123.5) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:18,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:18,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 262 [2023-11-06 22:04:18,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:18,657 INFO L124 PetriNetUnfolderBase]: 81/164 cut-off events. [2023-11-06 22:04:18,657 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:04:18,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 464 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-11-06 22:04:18,663 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-06 22:04:18,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-11-06 22:04:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:04:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:04:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 275 transitions. [2023-11-06 22:04:18,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248091603053435 [2023-11-06 22:04:18,684 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 275 transitions. [2023-11-06 22:04:18,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 275 transitions. [2023-11-06 22:04:18,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:18,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 275 transitions. [2023-11-06 22:04:18,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:18,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:18,703 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:18,706 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 275 transitions. [2023-11-06 22:04:18,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-11-06 22:04:18,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:04:18,713 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-11-06 22:04:18,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-06 22:04:18,721 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-06 22:04:18,721 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-11-06 22:04:18,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 123.5) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:18,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:18,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:04:18,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:04:18,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:18,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash 857830, now seen corresponding path program 1 times [2023-11-06 22:04:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821725645] [2023-11-06 22:04:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:19,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821725645] [2023-11-06 22:04:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821725645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:19,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:19,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:19,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390797927] [2023-11-06 22:04:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:19,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:19,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:19,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:19,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:19,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 262 [2023-11-06 22:04:19,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:19,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 262 [2023-11-06 22:04:19,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:19,382 INFO L124 PetriNetUnfolderBase]: 76/153 cut-off events. [2023-11-06 22:04:19,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:19,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 421 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-11-06 22:04:19,387 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-06 22:04:19,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-11-06 22:04:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-11-06 22:04:19,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796437659033079 [2023-11-06 22:04:19,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-11-06 22:04:19,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-11-06 22:04:19,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:19,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-11-06 22:04:19,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,416 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 377 transitions. [2023-11-06 22:04:19,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-11-06 22:04:19,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:19,419 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-11-06 22:04:19,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-11-06 22:04:19,421 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-06 22:04:19,422 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-11-06 22:04:19,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:19,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:04:19,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:04:19,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:19,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash 857832, now seen corresponding path program 1 times [2023-11-06 22:04:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963254199] [2023-11-06 22:04:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963254199] [2023-11-06 22:04:19,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963254199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:19,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:19,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:19,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868189841] [2023-11-06 22:04:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:19,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:19,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:19,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 262 [2023-11-06 22:04:19,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:19,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 262 [2023-11-06 22:04:19,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:19,780 INFO L124 PetriNetUnfolderBase]: 71/142 cut-off events. [2023-11-06 22:04:19,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:19,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 384 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-11-06 22:04:19,783 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-06 22:04:19,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-11-06 22:04:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-11-06 22:04:19,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580152671755725 [2023-11-06 22:04:19,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-11-06 22:04:19,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-11-06 22:04:19,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:19,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-11-06 22:04:19,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,794 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 360 transitions. [2023-11-06 22:04:19,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-11-06 22:04:19,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:19,796 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-11-06 22:04:19,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-11-06 22:04:19,798 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-11-06 22:04:19,798 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-11-06 22:04:19,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:19,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:19,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:04:19,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:04:19,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:19,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 824398253, now seen corresponding path program 1 times [2023-11-06 22:04:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934381364] [2023-11-06 22:04:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934381364] [2023-11-06 22:04:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934381364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:19,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:19,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537737484] [2023-11-06 22:04:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:19,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:20,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 262 [2023-11-06 22:04:20,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:20,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 262 [2023-11-06 22:04:20,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:20,172 INFO L124 PetriNetUnfolderBase]: 66/131 cut-off events. [2023-11-06 22:04:20,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:20,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 342 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-11-06 22:04:20,177 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-06 22:04:20,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-11-06 22:04:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:20,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-11-06 22:04:20,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47455470737913485 [2023-11-06 22:04:20,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-11-06 22:04:20,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-11-06 22:04:20,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:20,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-11-06 22:04:20,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,193 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 373 transitions. [2023-11-06 22:04:20,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-11-06 22:04:20,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:20,196 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-11-06 22:04:20,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-11-06 22:04:20,199 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-11-06 22:04:20,199 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-11-06 22:04:20,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:20,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:04:20,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:04:20,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:20,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 824398255, now seen corresponding path program 1 times [2023-11-06 22:04:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194285748] [2023-11-06 22:04:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:20,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194285748] [2023-11-06 22:04:20,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194285748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:20,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192547847] [2023-11-06 22:04:20,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:20,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:20,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:20,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 262 [2023-11-06 22:04:20,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:20,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 262 [2023-11-06 22:04:20,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:20,427 INFO L124 PetriNetUnfolderBase]: 61/120 cut-off events. [2023-11-06 22:04:20,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 298 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-11-06 22:04:20,430 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-11-06 22:04:20,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-11-06 22:04:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-11-06 22:04:20,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529262086513995 [2023-11-06 22:04:20,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-11-06 22:04:20,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-11-06 22:04:20,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:20,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-11-06 22:04:20,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,441 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 356 transitions. [2023-11-06 22:04:20,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-11-06 22:04:20,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:20,444 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-11-06 22:04:20,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-06 22:04:20,447 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 22:04:20,448 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-11-06 22:04:20,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:20,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:20,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:04:20,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:20,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1972762411, now seen corresponding path program 1 times [2023-11-06 22:04:20,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:20,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524099105] [2023-11-06 22:04:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:20,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:20,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524099105] [2023-11-06 22:04:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524099105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:20,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:20,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71287960] [2023-11-06 22:04:20,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:20,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:20,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 262 [2023-11-06 22:04:20,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:20,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 262 [2023-11-06 22:04:20,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:20,925 INFO L124 PetriNetUnfolderBase]: 49/100 cut-off events. [2023-11-06 22:04:20,925 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:20,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-11-06 22:04:20,927 INFO L140 encePairwiseOnDemand]: 260/262 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 22:04:20,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-11-06 22:04:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-11-06 22:04:20,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198473282442748 [2023-11-06 22:04:20,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-11-06 22:04:20,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-11-06 22:04:20,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:20,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-11-06 22:04:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,939 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 330 transitions. [2023-11-06 22:04:20,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-11-06 22:04:20,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:20,941 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-11-06 22:04:20,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-11-06 22:04:20,945 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 22:04:20,950 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-11-06 22:04:20,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:20,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:20,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:04:20,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:20,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1972762409, now seen corresponding path program 1 times [2023-11-06 22:04:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540369409] [2023-11-06 22:04:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540369409] [2023-11-06 22:04:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540369409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:21,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:04:21,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596535314] [2023-11-06 22:04:21,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:21,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:21,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:21,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 262 [2023-11-06 22:04:21,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:21,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:21,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 262 [2023-11-06 22:04:21,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:21,440 INFO L124 PetriNetUnfolderBase]: 37/80 cut-off events. [2023-11-06 22:04:21,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:21,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-11-06 22:04:21,441 INFO L140 encePairwiseOnDemand]: 260/262 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-11-06 22:04:21,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-11-06 22:04:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-11-06 22:04:21,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43765903307888043 [2023-11-06 22:04:21,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-11-06 22:04:21,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-11-06 22:04:21,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:21,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-11-06 22:04:21,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:21,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:21,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:21,449 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 344 transitions. [2023-11-06 22:04:21,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-11-06 22:04:21,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:21,451 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-11-06 22:04:21,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-11-06 22:04:21,452 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 22:04:21,452 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-11-06 22:04:21,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:21,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:21,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:21,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:04:21,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:21,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:21,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1294004031, now seen corresponding path program 1 times [2023-11-06 22:04:21,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:21,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799443570] [2023-11-06 22:04:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:22,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:22,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799443570] [2023-11-06 22:04:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799443570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:22,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:22,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:22,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56616861] [2023-11-06 22:04:22,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:22,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 262 [2023-11-06 22:04:22,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:22,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:22,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 262 [2023-11-06 22:04:22,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:23,207 INFO L124 PetriNetUnfolderBase]: 40/106 cut-off events. [2023-11-06 22:04:23,208 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:04:23,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 342 event pairs, 7 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-11-06 22:04:23,209 INFO L140 encePairwiseOnDemand]: 258/262 looper letters, 28 selfloop transitions, 2 changer transitions 9/39 dead transitions. [2023-11-06 22:04:23,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 178 flow [2023-11-06 22:04:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 565 transitions. [2023-11-06 22:04:23,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312977099236641 [2023-11-06 22:04:23,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 565 transitions. [2023-11-06 22:04:23,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 565 transitions. [2023-11-06 22:04:23,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:23,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 565 transitions. [2023-11-06 22:04:23,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:23,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:23,222 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:23,223 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 5 states and 565 transitions. [2023-11-06 22:04:23,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 178 flow [2023-11-06 22:04:23,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:23,225 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 59 flow [2023-11-06 22:04:23,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2023-11-06 22:04:23,234 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-11-06 22:04:23,234 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 59 flow [2023-11-06 22:04:23,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:23,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:23,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:23,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:04:23,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:23,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1867755111, now seen corresponding path program 2 times [2023-11-06 22:04:23,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:23,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232002530] [2023-11-06 22:04:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:23,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:25,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232002530] [2023-11-06 22:04:25,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232002530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:25,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:25,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:25,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018351188] [2023-11-06 22:04:25,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:25,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:25,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:25,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:25,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:25,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 262 [2023-11-06 22:04:25,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:25,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:25,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 262 [2023-11-06 22:04:25,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:26,127 INFO L124 PetriNetUnfolderBase]: 34/110 cut-off events. [2023-11-06 22:04:26,128 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-06 22:04:26,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 110 events. 34/110 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 381 event pairs, 11 based on Foata normal form. 1/111 useless extension candidates. Maximal degree in co-relation 293. Up to 54 conditions per place. [2023-11-06 22:04:26,129 INFO L140 encePairwiseOnDemand]: 258/262 looper letters, 28 selfloop transitions, 3 changer transitions 7/38 dead transitions. [2023-11-06 22:04:26,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 195 flow [2023-11-06 22:04:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:26,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 563 transitions. [2023-11-06 22:04:26,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297709923664122 [2023-11-06 22:04:26,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 563 transitions. [2023-11-06 22:04:26,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 563 transitions. [2023-11-06 22:04:26,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:26,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 563 transitions. [2023-11-06 22:04:26,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:26,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:26,141 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:26,141 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 59 flow. Second operand 5 states and 563 transitions. [2023-11-06 22:04:26,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 195 flow [2023-11-06 22:04:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 188 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:26,145 INFO L231 Difference]: Finished difference. Result has 38 places, 18 transitions, 76 flow [2023-11-06 22:04:26,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=18} [2023-11-06 22:04:26,146 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-11-06 22:04:26,146 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 18 transitions, 76 flow [2023-11-06 22:04:26,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:26,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:26,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:26,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:04:26,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:26,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:26,148 INFO L85 PathProgramCache]: Analyzing trace with hash 641232231, now seen corresponding path program 3 times [2023-11-06 22:04:26,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:26,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932496874] [2023-11-06 22:04:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:26,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:27,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932496874] [2023-11-06 22:04:27,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932496874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:27,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:27,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:27,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601177957] [2023-11-06 22:04:27,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:27,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:04:27,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:04:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:04:27,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 262 [2023-11-06 22:04:27,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 18 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:27,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:27,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 262 [2023-11-06 22:04:27,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:28,157 INFO L124 PetriNetUnfolderBase]: 35/115 cut-off events. [2023-11-06 22:04:28,157 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2023-11-06 22:04:28,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 115 events. 35/115 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 435 event pairs, 10 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 365. Up to 62 conditions per place. [2023-11-06 22:04:28,159 INFO L140 encePairwiseOnDemand]: 257/262 looper letters, 25 selfloop transitions, 3 changer transitions 11/39 dead transitions. [2023-11-06 22:04:28,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 223 flow [2023-11-06 22:04:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:04:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:04:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 644 transitions. [2023-11-06 22:04:28,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40966921119592875 [2023-11-06 22:04:28,187 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 644 transitions. [2023-11-06 22:04:28,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 644 transitions. [2023-11-06 22:04:28,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:28,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 644 transitions. [2023-11-06 22:04:28,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:28,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:28,212 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:28,212 INFO L175 Difference]: Start difference. First operand has 38 places, 18 transitions, 76 flow. Second operand 6 states and 644 transitions. [2023-11-06 22:04:28,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 223 flow [2023-11-06 22:04:28,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 212 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:28,221 INFO L231 Difference]: Finished difference. Result has 43 places, 18 transitions, 85 flow [2023-11-06 22:04:28,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=18} [2023-11-06 22:04:28,224 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-06 22:04:28,224 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 18 transitions, 85 flow [2023-11-06 22:04:28,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:28,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:28,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:28,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:04:28,231 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:28,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:28,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1243470475, now seen corresponding path program 4 times [2023-11-06 22:04:28,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:28,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644127666] [2023-11-06 22:04:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:28,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:29,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644127666] [2023-11-06 22:04:29,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644127666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:29,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999111384] [2023-11-06 22:04:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:29,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:29,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 262 [2023-11-06 22:04:29,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 18 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:29,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:29,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 262 [2023-11-06 22:04:29,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:30,380 INFO L124 PetriNetUnfolderBase]: 28/94 cut-off events. [2023-11-06 22:04:30,381 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2023-11-06 22:04:30,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 94 events. 28/94 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 275 event pairs, 16 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 333. Up to 52 conditions per place. [2023-11-06 22:04:30,382 INFO L140 encePairwiseOnDemand]: 258/262 looper letters, 28 selfloop transitions, 3 changer transitions 9/40 dead transitions. [2023-11-06 22:04:30,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 245 flow [2023-11-06 22:04:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 563 transitions. [2023-11-06 22:04:30,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297709923664122 [2023-11-06 22:04:30,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 563 transitions. [2023-11-06 22:04:30,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 563 transitions. [2023-11-06 22:04:30,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:30,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 563 transitions. [2023-11-06 22:04:30,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:30,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:30,394 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:30,394 INFO L175 Difference]: Start difference. First operand has 43 places, 18 transitions, 85 flow. Second operand 5 states and 563 transitions. [2023-11-06 22:04:30,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 245 flow [2023-11-06 22:04:30,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 224 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-06 22:04:30,400 INFO L231 Difference]: Finished difference. Result has 44 places, 18 transitions, 90 flow [2023-11-06 22:04:30,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=18} [2023-11-06 22:04:30,401 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-11-06 22:04:30,401 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 18 transitions, 90 flow [2023-11-06 22:04:30,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:30,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:30,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:30,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:04:30,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:30,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 690186889, now seen corresponding path program 5 times [2023-11-06 22:04:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:30,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923743635] [2023-11-06 22:04:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:30,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:31,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923743635] [2023-11-06 22:04:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923743635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140246692] [2023-11-06 22:04:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:32,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 262 [2023-11-06 22:04:32,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 18 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:32,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 262 [2023-11-06 22:04:32,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:32,388 INFO L124 PetriNetUnfolderBase]: 21/69 cut-off events. [2023-11-06 22:04:32,389 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2023-11-06 22:04:32,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 69 events. 21/69 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 7 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 262. Up to 29 conditions per place. [2023-11-06 22:04:32,390 INFO L140 encePairwiseOnDemand]: 258/262 looper letters, 18 selfloop transitions, 1 changer transitions 18/37 dead transitions. [2023-11-06 22:04:32,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 216 flow [2023-11-06 22:04:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2023-11-06 22:04:32,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42900763358778626 [2023-11-06 22:04:32,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2023-11-06 22:04:32,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2023-11-06 22:04:32,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:32,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2023-11-06 22:04:32,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,401 INFO L175 Difference]: Start difference. First operand has 44 places, 18 transitions, 90 flow. Second operand 5 states and 562 transitions. [2023-11-06 22:04:32,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 216 flow [2023-11-06 22:04:32,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 204 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:04:32,404 INFO L231 Difference]: Finished difference. Result has 45 places, 16 transitions, 69 flow [2023-11-06 22:04:32,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=69, PETRI_PLACES=45, PETRI_TRANSITIONS=16} [2023-11-06 22:04:32,405 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-11-06 22:04:32,405 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 16 transitions, 69 flow [2023-11-06 22:04:32,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:32,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:32,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:32,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:04:32,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:04:32,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1380191543, now seen corresponding path program 6 times [2023-11-06 22:04:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:32,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3977061] [2023-11-06 22:04:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:32,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3977061] [2023-11-06 22:04:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3977061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:33,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:33,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:33,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153232730] [2023-11-06 22:04:33,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:33,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:33,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:33,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 262 [2023-11-06 22:04:33,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 16 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:33,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:33,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 262 [2023-11-06 22:04:33,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:33,743 INFO L124 PetriNetUnfolderBase]: 10/38 cut-off events. [2023-11-06 22:04:33,744 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-06 22:04:33,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 38 events. 10/38 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 5 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 141. Up to 21 conditions per place. [2023-11-06 22:04:33,744 INFO L140 encePairwiseOnDemand]: 258/262 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-11-06 22:04:33,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 23 transitions, 135 flow [2023-11-06 22:04:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2023-11-06 22:04:33,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41908396946564885 [2023-11-06 22:04:33,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2023-11-06 22:04:33,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2023-11-06 22:04:33,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:33,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2023-11-06 22:04:33,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:33,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:33,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:33,756 INFO L175 Difference]: Start difference. First operand has 45 places, 16 transitions, 69 flow. Second operand 5 states and 549 transitions. [2023-11-06 22:04:33,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 23 transitions, 135 flow [2023-11-06 22:04:33,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 117 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-06 22:04:33,758 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-11-06 22:04:33,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-11-06 22:04:33,761 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-11-06 22:04:33,761 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-11-06 22:04:33,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:33,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-06 22:04:33,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-06 22:04:33,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-06 22:04:33,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-06 22:04:33,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-06 22:04:33,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-06 22:04:33,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-06 22:04:33,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-06 22:04:33,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-06 22:04:33,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-06 22:04:33,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-06 22:04:33,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-06 22:04:33,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-06 22:04:33,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-06 22:04:33,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-06 22:04:33,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-06 22:04:33,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-06 22:04:33,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:04:33,770 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:33,774 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:04:33,774 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:04:33,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:04:33 BasicIcfg [2023-11-06 22:04:33,781 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:04:33,782 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:04:33,782 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:04:33,782 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:04:33,783 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:08" (3/4) ... [2023-11-06 22:04:33,785 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:04:33,789 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:04:33,789 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:04:33,789 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:04:33,799 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 22:04:33,799 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:04:33,800 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:04:33,800 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:04:33,872 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:04:33,872 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:04:33,873 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:04:33,873 INFO L158 Benchmark]: Toolchain (without parser) took 27533.03ms. Allocated memory was 130.0MB in the beginning and 408.9MB in the end (delta: 278.9MB). Free memory was 86.2MB in the beginning and 252.1MB in the end (delta: -165.8MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. [2023-11-06 22:04:33,874 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 130.0MB. Free memory was 102.2MB in the beginning and 102.0MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:04:33,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.89ms. Allocated memory is still 130.0MB. Free memory was 86.0MB in the beginning and 74.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:04:33,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.22ms. Allocated memory is still 130.0MB. Free memory was 74.6MB in the beginning and 72.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:04:33,875 INFO L158 Benchmark]: Boogie Preprocessor took 62.09ms. Allocated memory is still 130.0MB. Free memory was 72.0MB in the beginning and 70.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:04:33,876 INFO L158 Benchmark]: RCFGBuilder took 1549.55ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 69.9MB in the beginning and 115.5MB in the end (delta: -45.5MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2023-11-06 22:04:33,877 INFO L158 Benchmark]: TraceAbstraction took 25407.35ms. Allocated memory was 195.0MB in the beginning and 408.9MB in the end (delta: 213.9MB). Free memory was 114.4MB in the beginning and 256.2MB in the end (delta: -141.8MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2023-11-06 22:04:33,877 INFO L158 Benchmark]: Witness Printer took 91.04ms. Allocated memory is still 408.9MB. Free memory was 256.2MB in the beginning and 252.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:04:33,881 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 130.0MB. Free memory was 102.2MB in the beginning and 102.0MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.89ms. Allocated memory is still 130.0MB. Free memory was 86.0MB in the beginning and 74.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.22ms. Allocated memory is still 130.0MB. Free memory was 74.6MB in the beginning and 72.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.09ms. Allocated memory is still 130.0MB. Free memory was 72.0MB in the beginning and 70.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1549.55ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 69.9MB in the beginning and 115.5MB in the end (delta: -45.5MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. * TraceAbstraction took 25407.35ms. Allocated memory was 195.0MB in the beginning and 408.9MB in the end (delta: 213.9MB). Free memory was 114.4MB in the beginning and 256.2MB in the end (delta: -141.8MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. * Witness Printer took 91.04ms. Allocated memory is still 408.9MB. Free memory was 256.2MB in the beginning and 252.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5s, 135 PlacesBefore, 39 PlacesAfterwards, 126 TransitionsBefore, 29 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 7 FixpointIterations, 90 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 128 TotalNumberOfCompositions, 626 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 626, independent: 626, independent conditional: 0, independent unconditional: 626, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 225, independent: 225, independent conditional: 0, independent unconditional: 225, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 626, independent: 401, independent conditional: 0, independent unconditional: 401, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 225, unknown conditional: 0, unknown unconditional: 225] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 957 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 536 mSDsluCounter, 281 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1482 IncrementalHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 133 mSDtfsCounter, 1482 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=11, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3615 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:04:33,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dd71a5-ac3f-44f0-b702-aee3521c86d5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE