./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:19:57,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:19:57,762 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:19:57,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:19:57,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:19:57,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:19:57,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:19:57,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:19:57,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:19:57,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:19:57,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:19:57,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:19:57,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:19:57,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:19:57,814 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:19:57,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:19:57,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:19:57,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:19:57,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:19:57,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:19:57,822 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:19:57,822 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:19:57,822 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:19:57,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:19:57,823 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:19:57,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:19:57,823 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:19:57,824 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:19:57,824 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:19:57,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:19:57,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:19:57,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:19:57,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:19:57,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:19:57,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:19:57,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:19:57,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:19:57,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:19:57,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:19:57,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:19:57,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:19:57,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:19:57,831 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_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 [2024-11-08 17:19:58,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:19:58,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:19:58,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:19:58,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:19:58,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:19:58,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i Unable to find full path for "g++" [2024-11-08 17:20:00,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:20:00,510 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:20:00,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i [2024-11-08 17:20:00,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/data/974281d95/d500e77a608b45d1a58c3ee9b5e1b98e/FLAG29932d85f [2024-11-08 17:20:00,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/data/974281d95/d500e77a608b45d1a58c3ee9b5e1b98e [2024-11-08 17:20:00,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:20:00,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:20:00,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:20:00,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:20:00,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:20:00,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:00" (1/1) ... [2024-11-08 17:20:00,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca2038c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:00, skipping insertion in model container [2024-11-08 17:20:00,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:00" (1/1) ... [2024-11-08 17:20:00,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:20:01,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:20:01,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:20:01,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:20:01,481 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:20:01,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01 WrapperNode [2024-11-08 17:20:01,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:20:01,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:20:01,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:20:01,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:20:01,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,578 INFO L138 Inliner]: procedures = 370, calls = 86, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 177 [2024-11-08 17:20:01,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:20:01,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:20:01,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:20:01,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:20:01,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,601 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,643 INFO L175 MemorySlicer]: Split 78 memory accesses to 3 slices as follows [50, 14, 14]. 64 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [50, 10, 0]. The 11 writes are split as follows [0, 1, 10]. [2024-11-08 17:20:01,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:20:01,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:20:01,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:20:01,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:20:01,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (1/1) ... [2024-11-08 17:20:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:20:01,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:01,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:20:01,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:20:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:20:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:20:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:20:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 17:20:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 17:20:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 17:20:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:20:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:20:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:20:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:20:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:20:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:20:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:20:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:20:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:20:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:20:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:20:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:20:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:20:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 17:20:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 17:20:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:20:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:20:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:20:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:20:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:20:01,813 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:20:01,986 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:20:01,988 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:20:02,541 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:20:02,544 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:20:02,919 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:20:02,920 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:20:02,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:02 BoogieIcfgContainer [2024-11-08 17:20:02,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:20:02,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:20:02,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:20:02,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:20:02,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:20:00" (1/3) ... [2024-11-08 17:20:02,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2909a07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:02, skipping insertion in model container [2024-11-08 17:20:02,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:01" (2/3) ... [2024-11-08 17:20:02,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2909a07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:02, skipping insertion in model container [2024-11-08 17:20:02,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:02" (3/3) ... [2024-11-08 17:20:02,932 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2024-11-08 17:20:02,951 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:20:02,951 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-11-08 17:20:02,951 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:20:03,043 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:20:03,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 84 transitions, 172 flow [2024-11-08 17:20:03,150 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2024-11-08 17:20:03,151 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:20:03,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 83 events. 6/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 259 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-08 17:20:03,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 84 transitions, 172 flow [2024-11-08 17:20:03,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 83 transitions, 169 flow [2024-11-08 17:20:03,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:20:03,185 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@f39f2b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:20:03,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-08 17:20:03,194 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:20:03,195 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 17:20:03,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:20:03,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:03,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:20:03,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:03,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash 15077628, now seen corresponding path program 1 times [2024-11-08 17:20:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275865591] [2024-11-08 17:20:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:03,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:03,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:03,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275865591] [2024-11-08 17:20:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275865591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:03,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:20:03,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:20:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014019322] [2024-11-08 17:20:03,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:03,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:20:03,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:03,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:20:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:20:03,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 84 [2024-11-08 17:20:03,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:03,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:03,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 84 [2024-11-08 17:20:03,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:04,129 INFO L124 PetriNetUnfolderBase]: 138/524 cut-off events. [2024-11-08 17:20:04,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:20:04,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 524 events. 138/524 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3198 event pairs, 90 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 770. Up to 226 conditions per place. [2024-11-08 17:20:04,139 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 36 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-08 17:20:04,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 261 flow [2024-11-08 17:20:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:20:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:20:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-08 17:20:04,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7698412698412699 [2024-11-08 17:20:04,157 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 169 flow. Second operand 3 states and 194 transitions. [2024-11-08 17:20:04,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 261 flow [2024-11-08 17:20:04,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:20:04,168 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 168 flow [2024-11-08 17:20:04,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-11-08 17:20:04,177 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-11-08 17:20:04,177 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 168 flow [2024-11-08 17:20:04,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:04,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:04,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:20:04,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:20:04,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:04,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash 15077629, now seen corresponding path program 1 times [2024-11-08 17:20:04,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:04,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551592059] [2024-11-08 17:20:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551592059] [2024-11-08 17:20:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551592059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:04,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:20:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:20:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907438497] [2024-11-08 17:20:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:04,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:20:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:20:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:20:04,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 84 [2024-11-08 17:20:04,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:04,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:04,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 84 [2024-11-08 17:20:04,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:04,694 INFO L124 PetriNetUnfolderBase]: 128/492 cut-off events. [2024-11-08 17:20:04,695 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-08 17:20:04,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 492 events. 128/492 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2962 event pairs, 90 based on Foata normal form. 22/381 useless extension candidates. Maximal degree in co-relation 740. Up to 226 conditions per place. [2024-11-08 17:20:04,703 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 34 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2024-11-08 17:20:04,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 256 flow [2024-11-08 17:20:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:20:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:20:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-11-08 17:20:04,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2024-11-08 17:20:04,707 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 168 flow. Second operand 3 states and 198 transitions. [2024-11-08 17:20:04,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 256 flow [2024-11-08 17:20:04,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:20:04,712 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 160 flow [2024-11-08 17:20:04,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-11-08 17:20:04,713 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2024-11-08 17:20:04,713 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 160 flow [2024-11-08 17:20:04,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:04,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:04,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:20:04,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:20:04,717 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:04,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1604712861, now seen corresponding path program 1 times [2024-11-08 17:20:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:04,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610750072] [2024-11-08 17:20:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:04,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:04,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610750072] [2024-11-08 17:20:04,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610750072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:04,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:20:04,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:20:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326074462] [2024-11-08 17:20:04,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:04,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:20:04,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:20:04,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:20:05,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2024-11-08 17:20:05,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:05,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:05,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2024-11-08 17:20:05,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:05,378 INFO L124 PetriNetUnfolderBase]: 148/511 cut-off events. [2024-11-08 17:20:05,378 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-08 17:20:05,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 511 events. 148/511 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2978 event pairs, 117 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 800. Up to 287 conditions per place. [2024-11-08 17:20:05,382 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 30 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2024-11-08 17:20:05,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 214 flow [2024-11-08 17:20:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:20:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:20:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-11-08 17:20:05,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-11-08 17:20:05,384 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 160 flow. Second operand 3 states and 182 transitions. [2024-11-08 17:20:05,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 214 flow [2024-11-08 17:20:05,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:20:05,387 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 146 flow [2024-11-08 17:20:05,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-11-08 17:20:05,387 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -11 predicate places. [2024-11-08 17:20:05,388 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 146 flow [2024-11-08 17:20:05,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:05,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:05,388 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:20:05,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:20:05,389 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:05,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1604712862, now seen corresponding path program 1 times [2024-11-08 17:20:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93340612] [2024-11-08 17:20:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93340612] [2024-11-08 17:20:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93340612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:20:05,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:20:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604492052] [2024-11-08 17:20:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:05,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:20:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:20:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:20:05,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 84 [2024-11-08 17:20:05,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:05,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:05,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 84 [2024-11-08 17:20:05,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:06,129 INFO L124 PetriNetUnfolderBase]: 164/545 cut-off events. [2024-11-08 17:20:06,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:20:06,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 545 events. 164/545 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3152 event pairs, 126 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 867. Up to 320 conditions per place. [2024-11-08 17:20:06,135 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 34 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-08 17:20:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 228 flow [2024-11-08 17:20:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:20:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:20:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-11-08 17:20:06,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6101190476190477 [2024-11-08 17:20:06,139 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 146 flow. Second operand 4 states and 205 transitions. [2024-11-08 17:20:06,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 228 flow [2024-11-08 17:20:06,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:20:06,144 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 177 flow [2024-11-08 17:20:06,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-08 17:20:06,148 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2024-11-08 17:20:06,148 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 177 flow [2024-11-08 17:20:06,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:06,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:06,149 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2024-11-08 17:20:06,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:20:06,149 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:06,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1325430007, now seen corresponding path program 1 times [2024-11-08 17:20:06,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:06,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811523388] [2024-11-08 17:20:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:06,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811523388] [2024-11-08 17:20:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811523388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257665482] [2024-11-08 17:20:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:06,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:06,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:06,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:06,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:20:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:06,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:20:06,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:20:06,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:20:07,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:20:07,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:20:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:07,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:20:07,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:07,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:20:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257665482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:20:07,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:20:07,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-11-08 17:20:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542918902] [2024-11-08 17:20:07,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:20:07,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:20:07,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:20:07,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:20:09,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-08 17:20:09,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 177 flow. Second operand has 15 states, 15 states have (on average 41.4) internal successors, (621), 15 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:09,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:09,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-08 17:20:09,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:10,444 INFO L124 PetriNetUnfolderBase]: 190/649 cut-off events. [2024-11-08 17:20:10,445 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-08 17:20:10,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 649 events. 190/649 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3929 event pairs, 48 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 1057. Up to 200 conditions per place. [2024-11-08 17:20:10,449 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 66 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-11-08 17:20:10,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 437 flow [2024-11-08 17:20:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:20:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:20:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 363 transitions. [2024-11-08 17:20:10,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6173469387755102 [2024-11-08 17:20:10,452 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 177 flow. Second operand 7 states and 363 transitions. [2024-11-08 17:20:10,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 437 flow [2024-11-08 17:20:10,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 112 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:20:10,455 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 251 flow [2024-11-08 17:20:10,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-11-08 17:20:10,456 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-11-08 17:20:10,456 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 251 flow [2024-11-08 17:20:10,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 41.4) internal successors, (621), 15 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:10,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:10,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:10,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:20:10,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:10,661 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:10,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1820461618, now seen corresponding path program 1 times [2024-11-08 17:20:10,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:10,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759887663] [2024-11-08 17:20:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:10,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 17:20:10,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:10,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759887663] [2024-11-08 17:20:10,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759887663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:10,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:20:10,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:20:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13455217] [2024-11-08 17:20:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:10,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:20:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:20:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:20:10,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 84 [2024-11-08 17:20:10,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:10,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:10,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 84 [2024-11-08 17:20:10,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:10,986 INFO L124 PetriNetUnfolderBase]: 272/956 cut-off events. [2024-11-08 17:20:10,987 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-08 17:20:10,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 956 events. 272/956 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5756 event pairs, 108 based on Foata normal form. 20/804 useless extension candidates. Maximal degree in co-relation 1659. Up to 316 conditions per place. [2024-11-08 17:20:10,993 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 56 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-08 17:20:10,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 421 flow [2024-11-08 17:20:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:20:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:20:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-08 17:20:10,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2024-11-08 17:20:10,995 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 251 flow. Second operand 3 states and 213 transitions. [2024-11-08 17:20:10,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 421 flow [2024-11-08 17:20:10,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 413 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-08 17:20:11,038 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 272 flow [2024-11-08 17:20:11,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-11-08 17:20:11,041 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2024-11-08 17:20:11,041 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 272 flow [2024-11-08 17:20:11,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:11,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:11,042 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:11,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:20:11,043 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:11,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash 175109872, now seen corresponding path program 1 times [2024-11-08 17:20:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737654603] [2024-11-08 17:20:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:11,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 17:20:11,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:11,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737654603] [2024-11-08 17:20:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737654603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:11,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:20:11,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:20:11,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703932102] [2024-11-08 17:20:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:11,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:20:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:20:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:20:11,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 84 [2024-11-08 17:20:11,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:11,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:11,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 84 [2024-11-08 17:20:11,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:11,483 INFO L124 PetriNetUnfolderBase]: 285/973 cut-off events. [2024-11-08 17:20:11,483 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-08 17:20:11,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1798 conditions, 973 events. 285/973 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5839 event pairs, 168 based on Foata normal form. 0/828 useless extension candidates. Maximal degree in co-relation 1782. Up to 455 conditions per place. [2024-11-08 17:20:11,490 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 53 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-11-08 17:20:11,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 94 transitions, 439 flow [2024-11-08 17:20:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:20:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:20:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-11-08 17:20:11,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8015873015873016 [2024-11-08 17:20:11,492 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 272 flow. Second operand 3 states and 202 transitions. [2024-11-08 17:20:11,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 94 transitions, 439 flow [2024-11-08 17:20:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:20:11,496 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 266 flow [2024-11-08 17:20:11,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-11-08 17:20:11,496 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-08 17:20:11,497 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 266 flow [2024-11-08 17:20:11,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:11,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:11,497 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:11,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:20:11,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:11,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash 175109873, now seen corresponding path program 1 times [2024-11-08 17:20:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66114938] [2024-11-08 17:20:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66114938] [2024-11-08 17:20:11,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66114938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083703559] [2024-11-08 17:20:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:11,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:11,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:11,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:11,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:20:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:11,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:20:11,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:11,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:20:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083703559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:20:11,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:20:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 17:20:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612179696] [2024-11-08 17:20:11,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:20:11,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:20:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:20:11,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:20:11,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2024-11-08 17:20:11,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 52.333333333333336) internal successors, (471), 9 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:11,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:11,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2024-11-08 17:20:11,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:12,926 INFO L124 PetriNetUnfolderBase]: 763/2443 cut-off events. [2024-11-08 17:20:12,927 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-08 17:20:12,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4479 conditions, 2443 events. 763/2443 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 14101 event pairs, 27 based on Foata normal form. 104/2174 useless extension candidates. Maximal degree in co-relation 4463. Up to 255 conditions per place. [2024-11-08 17:20:12,943 INFO L140 encePairwiseOnDemand]: 74/84 looper letters, 159 selfloop transitions, 16 changer transitions 0/208 dead transitions. [2024-11-08 17:20:12,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 208 transitions, 945 flow [2024-11-08 17:20:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:20:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:20:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 585 transitions. [2024-11-08 17:20:12,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8705357142857143 [2024-11-08 17:20:12,946 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 266 flow. Second operand 8 states and 585 transitions. [2024-11-08 17:20:12,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 208 transitions, 945 flow [2024-11-08 17:20:12,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 208 transitions, 915 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:20:12,952 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 356 flow [2024-11-08 17:20:12,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=356, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2024-11-08 17:20:12,955 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2024-11-08 17:20:12,956 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 356 flow [2024-11-08 17:20:12,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 52.333333333333336) internal successors, (471), 9 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:12,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:12,957 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1] [2024-11-08 17:20:12,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:20:13,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:13,158 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:13,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 128464734, now seen corresponding path program 2 times [2024-11-08 17:20:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:13,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704951160] [2024-11-08 17:20:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:14,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:14,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704951160] [2024-11-08 17:20:14,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704951160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:14,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691763690] [2024-11-08 17:20:14,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:20:14,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:14,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:14,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:14,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:20:14,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:20:14,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:20:14,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 17:20:14,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:14,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:20:14,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:20:14,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:20:14,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:20:14,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:20:14,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:20:14,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:20:14,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:20:14,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:20:14,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:20:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:15,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:20:15,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:15,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:20:15,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:15,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:20:15,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:15,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:20:16,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:16,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:20:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691763690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:20:16,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:20:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-11-08 17:20:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020726527] [2024-11-08 17:20:16,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:20:16,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 17:20:16,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 17:20:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 17:20:25,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-08 17:20:25,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 356 flow. Second operand has 33 states, 33 states have (on average 41.45454545454545) internal successors, (1368), 33 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:25,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:25,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-08 17:20:25,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:27,699 INFO L124 PetriNetUnfolderBase]: 807/2754 cut-off events. [2024-11-08 17:20:27,700 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2024-11-08 17:20:27,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 2754 events. 807/2754 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 17266 event pairs, 256 based on Foata normal form. 6/2231 useless extension candidates. Maximal degree in co-relation 5146. Up to 856 conditions per place. [2024-11-08 17:20:27,720 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 100 selfloop transitions, 24 changer transitions 0/159 dead transitions. [2024-11-08 17:20:27,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 159 transitions, 938 flow [2024-11-08 17:20:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:20:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:20:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 645 transitions. [2024-11-08 17:20:27,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906593406593407 [2024-11-08 17:20:27,722 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 356 flow. Second operand 13 states and 645 transitions. [2024-11-08 17:20:27,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 159 transitions, 938 flow [2024-11-08 17:20:27,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 159 transitions, 920 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-08 17:20:27,729 INFO L231 Difference]: Finished difference. Result has 112 places, 93 transitions, 523 flow [2024-11-08 17:20:27,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=523, PETRI_PLACES=112, PETRI_TRANSITIONS=93} [2024-11-08 17:20:27,730 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 31 predicate places. [2024-11-08 17:20:27,731 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 93 transitions, 523 flow [2024-11-08 17:20:27,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 41.45454545454545) internal successors, (1368), 33 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:27,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:27,732 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:27,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:20:27,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:27,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:27,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 869475505, now seen corresponding path program 2 times [2024-11-08 17:20:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004855341] [2024-11-08 17:20:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004855341] [2024-11-08 17:20:28,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004855341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:28,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158081320] [2024-11-08 17:20:28,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:20:28,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:28,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:28,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:28,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:20:28,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:20:28,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:20:28,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:20:28,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:28,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:20:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 17:20:28,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:20:28,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158081320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:28,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:20:28,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-11-08 17:20:28,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473852723] [2024-11-08 17:20:28,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:28,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:20:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:20:28,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:20:28,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 84 [2024-11-08 17:20:28,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 93 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:28,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:28,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 84 [2024-11-08 17:20:28,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:29,072 INFO L124 PetriNetUnfolderBase]: 680/2430 cut-off events. [2024-11-08 17:20:29,072 INFO L125 PetriNetUnfolderBase]: For 1494/1494 co-relation queries the response was YES. [2024-11-08 17:20:29,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 2430 events. 680/2430 cut-off events. For 1494/1494 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14465 event pairs, 496 based on Foata normal form. 67/2128 useless extension candidates. Maximal degree in co-relation 4786. Up to 1242 conditions per place. [2024-11-08 17:20:29,095 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 72 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-11-08 17:20:29,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 809 flow [2024-11-08 17:20:29,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:20:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:20:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2024-11-08 17:20:29,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2024-11-08 17:20:29,097 INFO L175 Difference]: Start difference. First operand has 112 places, 93 transitions, 523 flow. Second operand 3 states and 204 transitions. [2024-11-08 17:20:29,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 809 flow [2024-11-08 17:20:29,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 765 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-08 17:20:29,106 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 486 flow [2024-11-08 17:20:29,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2024-11-08 17:20:29,107 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 27 predicate places. [2024-11-08 17:20:29,108 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 486 flow [2024-11-08 17:20:29,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:29,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:29,108 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:29,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:20:29,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:20:29,309 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:29,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1952647311, now seen corresponding path program 1 times [2024-11-08 17:20:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:29,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007976030] [2024-11-08 17:20:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007976030] [2024-11-08 17:20:29,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007976030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:29,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099360807] [2024-11-08 17:20:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:29,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:29,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:29,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:29,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:20:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:29,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:20:29,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:29,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:20:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099360807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:20:30,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:20:30,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-08 17:20:30,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829075255] [2024-11-08 17:20:30,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:20:30,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:20:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:20:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:20:30,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2024-11-08 17:20:30,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 486 flow. Second operand has 13 states, 13 states have (on average 52.92307692307692) internal successors, (688), 13 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:30,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:30,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2024-11-08 17:20:30,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:31,664 INFO L124 PetriNetUnfolderBase]: 1243/3982 cut-off events. [2024-11-08 17:20:31,665 INFO L125 PetriNetUnfolderBase]: For 2032/2032 co-relation queries the response was YES. [2024-11-08 17:20:31,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7884 conditions, 3982 events. 1243/3982 cut-off events. For 2032/2032 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 23040 event pairs, 27 based on Foata normal form. 44/3415 useless extension candidates. Maximal degree in co-relation 7853. Up to 257 conditions per place. [2024-11-08 17:20:31,702 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 255 selfloop transitions, 25 changer transitions 0/311 dead transitions. [2024-11-08 17:20:31,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 311 transitions, 1703 flow [2024-11-08 17:20:31,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:20:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:20:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 875 transitions. [2024-11-08 17:20:31,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8680555555555556 [2024-11-08 17:20:31,705 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 486 flow. Second operand 12 states and 875 transitions. [2024-11-08 17:20:31,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 311 transitions, 1703 flow [2024-11-08 17:20:31,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 311 transitions, 1657 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:20:31,716 INFO L231 Difference]: Finished difference. Result has 122 places, 93 transitions, 596 flow [2024-11-08 17:20:31,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=596, PETRI_PLACES=122, PETRI_TRANSITIONS=93} [2024-11-08 17:20:31,717 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 41 predicate places. [2024-11-08 17:20:31,717 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 596 flow [2024-11-08 17:20:31,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.92307692307692) internal successors, (688), 13 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:31,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:31,718 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1] [2024-11-08 17:20:31,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:20:31,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:20:31,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:20:31,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash 184475646, now seen corresponding path program 3 times [2024-11-08 17:20:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:31,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851852231] [2024-11-08 17:20:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:31,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 229 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:32,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:32,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851852231] [2024-11-08 17:20:32,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851852231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:32,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606801991] [2024-11-08 17:20:32,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:20:32,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:32,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:32,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:21:13,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 17:21:13,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:21:13,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:21:13,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:13,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606801991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:13,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:13,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 13 [2024-11-08 17:21:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154834969] [2024-11-08 17:21:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:13,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:21:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:21:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:21:13,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2024-11-08 17:21:13,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 93 transitions, 596 flow. Second operand has 13 states, 13 states have (on average 52.38461538461539) internal successors, (681), 13 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:13,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:21:13,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2024-11-08 17:21:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:21:15,302 INFO L124 PetriNetUnfolderBase]: 1233/3970 cut-off events. [2024-11-08 17:21:15,303 INFO L125 PetriNetUnfolderBase]: For 2319/2319 co-relation queries the response was YES. [2024-11-08 17:21:15,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7826 conditions, 3970 events. 1233/3970 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 23048 event pairs, 18 based on Foata normal form. 11/3367 useless extension candidates. Maximal degree in co-relation 7789. Up to 248 conditions per place. [2024-11-08 17:21:15,340 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 263 selfloop transitions, 23 changer transitions 1/317 dead transitions. [2024-11-08 17:21:15,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 317 transitions, 1743 flow [2024-11-08 17:21:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:21:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:21:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 926 transitions. [2024-11-08 17:21:15,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.847985347985348 [2024-11-08 17:21:15,344 INFO L175 Difference]: Start difference. First operand has 122 places, 93 transitions, 596 flow. Second operand 13 states and 926 transitions. [2024-11-08 17:21:15,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 317 transitions, 1743 flow [2024-11-08 17:21:15,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 317 transitions, 1643 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-11-08 17:21:15,354 INFO L231 Difference]: Finished difference. Result has 119 places, 89 transitions, 513 flow [2024-11-08 17:21:15,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=513, PETRI_PLACES=119, PETRI_TRANSITIONS=89} [2024-11-08 17:21:15,355 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2024-11-08 17:21:15,355 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 89 transitions, 513 flow [2024-11-08 17:21:15,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.38461538461539) internal successors, (681), 13 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:15,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:21:15,356 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:15,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:21:15,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:21:15,556 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:21:15,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1553063578, now seen corresponding path program 1 times [2024-11-08 17:21:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082557977] [2024-11-08 17:21:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 180 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082557977] [2024-11-08 17:21:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082557977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694780609] [2024-11-08 17:21:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:16,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:16,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:16,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:16,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:21:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:16,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:21:16,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:17,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:17,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 17:21:17,101 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:21:17,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:21:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 225 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:17,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:21:17,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-08 17:21:17,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:21:17,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2024-11-08 17:21:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 225 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694780609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:21:17,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:21:17,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-08 17:21:17,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274292375] [2024-11-08 17:21:17,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:21:17,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 17:21:17,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 17:21:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=493, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:21:19,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-08 17:21:19,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 89 transitions, 513 flow. Second operand has 28 states, 28 states have (on average 46.857142857142854) internal successors, (1312), 28 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:19,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:21:19,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-08 17:21:19,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:21:22,061 INFO L124 PetriNetUnfolderBase]: 1212/3986 cut-off events. [2024-11-08 17:21:22,061 INFO L125 PetriNetUnfolderBase]: For 1669/1669 co-relation queries the response was YES. [2024-11-08 17:21:22,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 3986 events. 1212/3986 cut-off events. For 1669/1669 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 23325 event pairs, 126 based on Foata normal form. 20/3363 useless extension candidates. Maximal degree in co-relation 7494. Up to 295 conditions per place. [2024-11-08 17:21:22,090 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 298 selfloop transitions, 46 changer transitions 1/378 dead transitions. [2024-11-08 17:21:22,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 378 transitions, 1871 flow [2024-11-08 17:21:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 17:21:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 17:21:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1271 transitions. [2024-11-08 17:21:22,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7205215419501134 [2024-11-08 17:21:22,094 INFO L175 Difference]: Start difference. First operand has 119 places, 89 transitions, 513 flow. Second operand 21 states and 1271 transitions. [2024-11-08 17:21:22,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 378 transitions, 1871 flow [2024-11-08 17:21:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 378 transitions, 1825 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-08 17:21:22,106 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 663 flow [2024-11-08 17:21:22,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=663, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-11-08 17:21:22,107 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 46 predicate places. [2024-11-08 17:21:22,107 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 663 flow [2024-11-08 17:21:22,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 46.857142857142854) internal successors, (1312), 28 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:22,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:21:22,108 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:22,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:21:22,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:22,309 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:21:22,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:22,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1780263631, now seen corresponding path program 2 times [2024-11-08 17:21:22,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:22,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959951466] [2024-11-08 17:21:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:22,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 180 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:23,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:23,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959951466] [2024-11-08 17:21:23,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959951466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:23,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759911026] [2024-11-08 17:21:23,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:21:23,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:23,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:23,152 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:23,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:21:23,547 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:21:23,547 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:21:23,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:21:23,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:23,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 17:21:23,802 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:21:23,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:21:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 225 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:23,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:21:24,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-08 17:21:24,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:21:24,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2024-11-08 17:21:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 225 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:24,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759911026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:21:24,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:21:24,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-08 17:21:24,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218035691] [2024-11-08 17:21:24,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:21:24,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 17:21:24,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:24,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 17:21:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:21:25,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-08 17:21:25,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 663 flow. Second operand has 28 states, 28 states have (on average 46.857142857142854) internal successors, (1312), 28 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:25,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:21:25,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-08 17:21:25,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:21:30,286 INFO L124 PetriNetUnfolderBase]: 3167/10029 cut-off events. [2024-11-08 17:21:30,286 INFO L125 PetriNetUnfolderBase]: For 4898/4915 co-relation queries the response was YES. [2024-11-08 17:21:30,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19128 conditions, 10029 events. 3167/10029 cut-off events. For 4898/4915 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 74985 event pairs, 161 based on Foata normal form. 228/8580 useless extension candidates. Maximal degree in co-relation 19099. Up to 456 conditions per place. [2024-11-08 17:21:30,353 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 588 selfloop transitions, 87 changer transitions 6/719 dead transitions. [2024-11-08 17:21:30,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 719 transitions, 3613 flow [2024-11-08 17:21:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 17:21:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-08 17:21:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2265 transitions. [2024-11-08 17:21:30,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7704081632653061 [2024-11-08 17:21:30,360 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 663 flow. Second operand 35 states and 2265 transitions. [2024-11-08 17:21:30,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 719 transitions, 3613 flow [2024-11-08 17:21:30,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 719 transitions, 3388 flow, removed 26 selfloop flow, removed 14 redundant places. [2024-11-08 17:21:30,385 INFO L231 Difference]: Finished difference. Result has 180 places, 175 transitions, 1243 flow [2024-11-08 17:21:30,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1243, PETRI_PLACES=180, PETRI_TRANSITIONS=175} [2024-11-08 17:21:30,386 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 99 predicate places. [2024-11-08 17:21:30,386 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 175 transitions, 1243 flow [2024-11-08 17:21:30,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 46.857142857142854) internal successors, (1312), 28 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:30,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:21:30,387 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:30,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:21:30,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 17:21:30,588 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:21:30,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash 646402854, now seen corresponding path program 1 times [2024-11-08 17:21:30,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:30,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526002796] [2024-11-08 17:21:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:30,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 125 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:37,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:37,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526002796] [2024-11-08 17:21:37,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526002796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:37,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017565674] [2024-11-08 17:21:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:37,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:37,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:37,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:37,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce933da7-f41a-470a-a260-4bcdcf6a003b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:21:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:37,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-08 17:21:37,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:37,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:21:37,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:21:37,713 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2024-11-08 17:21:37,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2024-11-08 17:21:37,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:37,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2024-11-08 17:21:37,938 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-08 17:21:37,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-08 17:21:38,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:38,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2024-11-08 17:21:38,272 INFO L349 Elim1Store]: treesize reduction 66, result has 35.3 percent of original size [2024-11-08 17:21:38,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 53 [2024-11-08 17:21:38,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:38,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2024-11-08 17:21:38,741 INFO L349 Elim1Store]: treesize reduction 92, result has 32.8 percent of original size [2024-11-08 17:21:38,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 60 [2024-11-08 17:21:38,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:38,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2024-11-08 17:21:39,205 INFO L349 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2024-11-08 17:21:39,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 42 [2024-11-08 17:21:39,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:39,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2024-11-08 17:21:39,653 INFO L349 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2024-11-08 17:21:39,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 42 [2024-11-08 17:21:39,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:39,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2024-11-08 17:21:40,095 INFO L349 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2024-11-08 17:21:40,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 42 [2024-11-08 17:21:40,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:40,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2024-11-08 17:21:40,535 INFO L349 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2024-11-08 17:21:40,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 42 [2024-11-08 17:21:40,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:40,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2024-11-08 17:21:40,980 INFO L349 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2024-11-08 17:21:40,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 42 [2024-11-08 17:21:41,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:21:41,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2024-11-08 17:21:41,730 INFO L349 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2024-11-08 17:21:41,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 42 [2024-11-08 17:21:41,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2024-11-08 17:21:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 180 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:42,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:21:58,316 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_201| Int) (v_ArrVal_3007 Int) (v_ArrVal_3004 Int)) (or (= (select |c_#valid| (select (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |c_ULTIMATE.start_main_~j~0#1| 1)))) is different from false [2024-11-08 17:22:00,447 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_201| Int) (v_ArrVal_3007 Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_new_~p~0#1.base_111| Int) (v_ArrVal_3004 Int) (v_ArrVal_3001 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |v_ULTIMATE.start_main_~j~0#1_202| 1)) (= (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_111| 1) (select (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_3001) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |c_ULTIMATE.start_main_~j~0#1| 1)))) is different from false [2024-11-08 17:22:02,928 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_201| Int) (v_ArrVal_3007 Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_new_~p~0#1.base_112| Int) (|v_ULTIMATE.start_new_~p~0#1.base_111| Int) (v_ArrVal_3004 Int) (v_ArrVal_3001 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |v_ULTIMATE.start_main_~j~0#1_202| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (= (select (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_112| 1) |v_ULTIMATE.start_new_~p~0#1.base_111| 1) (select (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_3001) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1))) is different from false [2024-11-08 17:22:05,559 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_201| Int) (v_ArrVal_3007 Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_new_~p~0#1.base_112| Int) (|v_ULTIMATE.start_new_~p~0#1.base_111| Int) (v_ArrVal_3004 Int) (v_ArrVal_3001 Int) (v_ArrVal_2998 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |v_ULTIMATE.start_main_~j~0#1_202| 1)) (= (select (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_112| 1) |v_ULTIMATE.start_new_~p~0#1.base_111| 1) (select (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_2998) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) v_ArrVal_3001) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)))) is different from false [2024-11-08 17:22:08,522 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_201| Int) (v_ArrVal_3007 Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_new_~p~0#1.base_112| Int) (|v_ULTIMATE.start_new_~p~0#1.base_111| Int) (v_ArrVal_3004 Int) (v_ArrVal_3001 Int) (v_ArrVal_2998 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |v_ULTIMATE.start_main_~j~0#1_202| 1)) (= (select (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_113| 1) |v_ULTIMATE.start_new_~p~0#1.base_112| 1) |v_ULTIMATE.start_new_~p~0#1.base_111| 1) (select (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_2998) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) v_ArrVal_3001) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)))) is different from false [2024-11-08 17:22:11,611 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3007 Int) (|v_ULTIMATE.start_new_~p~0#1.base_111| Int) (v_ArrVal_3004 Int) (v_ArrVal_3001 Int) (|v_ULTIMATE.start_main_~j~0#1_201| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_new_~p~0#1.base_112| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (v_ArrVal_2996 Int) (v_ArrVal_2998 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |v_ULTIMATE.start_main_~j~0#1_202| 1)) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (= (select (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_113| 1) |v_ULTIMATE.start_new_~p~0#1.base_112| 1) |v_ULTIMATE.start_new_~p~0#1.base_111| 1) (select (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_2996) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) v_ArrVal_2998) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) v_ArrVal_3001) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)))) is different from false [2024-11-08 17:22:15,282 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3007 Int) (|v_ULTIMATE.start_new_~p~0#1.base_111| Int) (v_ArrVal_3004 Int) (v_ArrVal_3001 Int) (|v_ULTIMATE.start_main_~j~0#1_201| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_new_~p~0#1.base_112| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (v_ArrVal_2996 Int) (v_ArrVal_2998 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |v_ULTIMATE.start_main_~j~0#1_202| 1)) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)) (= (select (store (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) |v_ULTIMATE.start_new_~p~0#1.base_112| 1) |v_ULTIMATE.start_new_~p~0#1.base_111| 1) (select (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_2996) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) v_ArrVal_2998) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) v_ArrVal_3001) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1))) is different from false [2024-11-08 17:22:19,089 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3007 Int) (|v_ULTIMATE.start_new_~p~0#1.base_111| Int) (v_ArrVal_3004 Int) (v_ArrVal_3001 Int) (|v_ULTIMATE.start_main_~j~0#1_201| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (v_ArrVal_2992 Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_new_~p~0#1.base_112| Int) (|v_ULTIMATE.start_main_~j~0#1_205| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (v_ArrVal_2996 Int) (v_ArrVal_2998 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_201| (+ |v_ULTIMATE.start_main_~j~0#1_202| 1)) (= (select (store (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) |v_ULTIMATE.start_new_~p~0#1.base_112| 1) |v_ULTIMATE.start_new_~p~0#1.base_111| 1) (select (store (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_2992) (+ (* |v_ULTIMATE.start_main_~j~0#1_205| 4) |c_~#slot~0.offset|) v_ArrVal_2996) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) v_ArrVal_2998) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) v_ArrVal_3001) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) v_ArrVal_3004) (+ (* |v_ULTIMATE.start_main_~j~0#1_201| 4) |c_~#slot~0.offset|) v_ArrVal_3007) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)) (< |v_ULTIMATE.start_main_~j~0#1_205| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |v_ULTIMATE.start_main_~j~0#1_205| 1)))) is different from false [2024-11-08 17:24:05,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 101