./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.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_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/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_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/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_78789dc9-4a77-48e8-916b-3e5a278d6ca6/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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:04:13,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:04:13,879 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 16:04:13,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:04:13,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:04:13,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:04:13,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:04:13,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:04:13,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:04:13,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:04:13,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:04:13,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:04:13,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:04:13,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:04:13,924 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:04:13,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:04:13,924 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:04:13,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:04:13,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:04:13,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:04:13,926 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:04:13,926 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:04:13,927 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:04:13,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:04:13,927 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:04:13,928 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:04:13,928 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:04:13,928 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:04:13,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:04:13,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:04:13,929 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:04:13,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:04:13,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:04:13,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:13,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:04:13,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:04:13,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:04:13,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:04:13,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:04:13,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:04:13,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:04:13,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:04:13,934 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_78789dc9-4a77-48e8-916b-3e5a278d6ca6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2024-11-08 16:04:14,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:04:14,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:04:14,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:04:14,267 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:04:14,268 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:04:14,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i Unable to find full path for "g++" [2024-11-08 16:04:16,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:04:16,550 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:04:16,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2024-11-08 16:04:16,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/data/2fc83e7d8/cefa29fbf0ba4d92b14aad1625e78696/FLAG35972d8e7 [2024-11-08 16:04:16,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/data/2fc83e7d8/cefa29fbf0ba4d92b14aad1625e78696 [2024-11-08 16:04:16,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:04:16,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:04:16,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:16,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:04:16,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:04:16,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5800477c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16, skipping insertion in model container [2024-11-08 16:04:16,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:04:16,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:16,900 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:04:16,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:16,952 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:04:16,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16 WrapperNode [2024-11-08 16:04:16,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:16,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:16,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:04:16,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:04:16,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,005 INFO L138 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2024-11-08 16:04:17,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:17,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:04:17,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:04:17,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:04:17,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,060 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-08 16:04:17,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:04:17,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:04:17,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:04:17,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:04:17,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:17,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:17,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:04:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:04:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:04:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:04:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:04:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:04:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:04:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:04:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:04:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:04:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:04:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:04:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:04:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:04:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:04:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 16:04:17,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 16:04:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:04:17,296 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:04:17,299 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:04:17,764 INFO L? ?]: Removed 98 outVars from TransFormulas that were not future-live. [2024-11-08 16:04:17,764 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:04:17,783 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:04:17,783 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:04:17,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:17 BoogieIcfgContainer [2024-11-08 16:04:17,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:04:17,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:04:17,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:04:17,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:04:17,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:04:16" (1/3) ... [2024-11-08 16:04:17,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18099e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:17, skipping insertion in model container [2024-11-08 16:04:17,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (2/3) ... [2024-11-08 16:04:17,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18099e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:17, skipping insertion in model container [2024-11-08 16:04:17,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:17" (3/3) ... [2024-11-08 16:04:17,795 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2024-11-08 16:04:17,815 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:04:17,816 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-08 16:04:17,860 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:04:17,867 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;@597ae53c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:04:17,867 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-08 16:04:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 66 states have (on average 1.7575757575757576) internal successors, (116), 92 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:04:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-08 16:04:17,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:17,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-08 16:04:17,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:17,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 28694853, now seen corresponding path program 1 times [2024-11-08 16:04:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982378917] [2024-11-08 16:04:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:18,202 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 16:04:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982378917] [2024-11-08 16:04:18,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982378917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:18,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:18,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139491038] [2024-11-08 16:04:18,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:18,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:18,256 INFO L87 Difference]: Start difference. First operand has 97 states, 66 states have (on average 1.7575757575757576) internal successors, (116), 92 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 16:04:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:18,413 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2024-11-08 16:04:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-08 16:04:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:18,425 INFO L225 Difference]: With dead ends: 89 [2024-11-08 16:04:18,425 INFO L226 Difference]: Without dead ends: 87 [2024-11-08 16:04:18,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:18,430 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 83 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:18,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 92 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:18,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-08 16:04:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-08 16:04:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.625) internal successors, (104), 82 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:04:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2024-11-08 16:04:18,502 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 5 [2024-11-08 16:04:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:18,502 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2024-11-08 16:04:18,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 16:04:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2024-11-08 16:04:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-08 16:04:18,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:18,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-08 16:04:18,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:04:18,506 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:18,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2024-11-08 16:04:18,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:18,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353084596] [2024-11-08 16:04:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:18,755 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 16:04:18,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:18,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353084596] [2024-11-08 16:04:18,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353084596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:18,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:18,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034397718] [2024-11-08 16:04:18,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:18,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:18,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:18,761 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 16:04:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:18,924 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2024-11-08 16:04:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:18,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-08 16:04:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:18,927 INFO L225 Difference]: With dead ends: 91 [2024-11-08 16:04:18,927 INFO L226 Difference]: Without dead ends: 91 [2024-11-08 16:04:18,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:18,929 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 1 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:18,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 163 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-08 16:04:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2024-11-08 16:04:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 85 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:04:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2024-11-08 16:04:18,946 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 5 [2024-11-08 16:04:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:18,946 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2024-11-08 16:04:18,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 16:04:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2024-11-08 16:04:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 16:04:18,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:18,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-08 16:04:18,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:04:18,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:18,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash 350650558, now seen corresponding path program 1 times [2024-11-08 16:04:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:18,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096821208] [2024-11-08 16:04:18,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:18,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:19,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096821208] [2024-11-08 16:04:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096821208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661641093] [2024-11-08 16:04:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:19,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:19,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:19,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:19,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:04:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:19,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:04:19,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:19,373 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 16:04:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:19,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:19,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661641093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:19,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-08 16:04:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200127459] [2024-11-08 16:04:19,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:19,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:04:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:04:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:04:19,645 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 16:04:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:20,027 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2024-11-08 16:04:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:04:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 16:04:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:20,031 INFO L225 Difference]: With dead ends: 111 [2024-11-08 16:04:20,031 INFO L226 Difference]: Without dead ends: 111 [2024-11-08 16:04:20,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:04:20,032 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 28 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:20,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 313 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:04:20,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-08 16:04:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-11-08 16:04:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 103 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:04:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 136 transitions. [2024-11-08 16:04:20,052 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 136 transitions. Word has length 9 [2024-11-08 16:04:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:20,052 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 136 transitions. [2024-11-08 16:04:20,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 16:04:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 136 transitions. [2024-11-08 16:04:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 16:04:20,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:20,053 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:20,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:04:20,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:20,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:20,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash 166934516, now seen corresponding path program 1 times [2024-11-08 16:04:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458675272] [2024-11-08 16:04:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:20,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:04:20,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:20,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458675272] [2024-11-08 16:04:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458675272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:20,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805376640] [2024-11-08 16:04:20,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:20,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:20,402 INFO L87 Difference]: Start difference. First operand 108 states and 136 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:04:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:20,453 INFO L93 Difference]: Finished difference Result 105 states and 133 transitions. [2024-11-08 16:04:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:20,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-08 16:04:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:20,456 INFO L225 Difference]: With dead ends: 105 [2024-11-08 16:04:20,458 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 16:04:20,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:20,459 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 62 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:20,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 116 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:04:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 16:04:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-08 16:04:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 100 states have internal predecessors, (127), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:04:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2024-11-08 16:04:20,477 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 25 [2024-11-08 16:04:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:20,477 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2024-11-08 16:04:20,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:04:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2024-11-08 16:04:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 16:04:20,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:20,479 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:20,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:04:20,480 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:20,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash 166934517, now seen corresponding path program 1 times [2024-11-08 16:04:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:20,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325234579] [2024-11-08 16:04:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:20,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325234579] [2024-11-08 16:04:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325234579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124435062] [2024-11-08 16:04:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:20,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:20,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:20,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:04:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:20,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:04:20,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:20,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:20,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124435062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:20,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:20,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-08 16:04:20,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875629311] [2024-11-08 16:04:20,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:20,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:04:20,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:20,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:04:20,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:04:20,974 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 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 16:04:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:21,498 INFO L93 Difference]: Finished difference Result 519 states and 787 transitions. [2024-11-08 16:04:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:04:21,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-08 16:04:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:21,502 INFO L225 Difference]: With dead ends: 519 [2024-11-08 16:04:21,502 INFO L226 Difference]: Without dead ends: 519 [2024-11-08 16:04:21,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:04:21,504 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 646 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:21,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 528 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:04:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-08 16:04:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 129. [2024-11-08 16:04:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.3727272727272728) internal successors, (151), 124 states have internal predecessors, (151), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:04:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 157 transitions. [2024-11-08 16:04:21,523 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 157 transitions. Word has length 25 [2024-11-08 16:04:21,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:21,524 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 157 transitions. [2024-11-08 16:04:21,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 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 16:04:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 157 transitions. [2024-11-08 16:04:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:04:21,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:21,525 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:21,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:04:21,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:21,730 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:21,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1160030011, now seen corresponding path program 2 times [2024-11-08 16:04:21,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:21,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135596063] [2024-11-08 16:04:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:21,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:22,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135596063] [2024-11-08 16:04:22,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135596063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705984072] [2024-11-08 16:04:22,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:04:22,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:22,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:22,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:22,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:04:22,114 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:04:22,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:22,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:04:22,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:22,159 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 16:04:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 16:04:22,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:04:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705984072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:22,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:04:22,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 14 [2024-11-08 16:04:22,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388411525] [2024-11-08 16:04:22,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:22,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:22,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:04:22,214 INFO L87 Difference]: Start difference. First operand 129 states and 157 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:04:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:22,290 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2024-11-08 16:04:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:22,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 16:04:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:22,292 INFO L225 Difference]: With dead ends: 133 [2024-11-08 16:04:22,292 INFO L226 Difference]: Without dead ends: 133 [2024-11-08 16:04:22,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:04:22,295 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:22,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 168 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:22,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-08 16:04:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-11-08 16:04:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 127 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:04:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2024-11-08 16:04:22,307 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 49 [2024-11-08 16:04:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:22,308 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2024-11-08 16:04:22,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:04:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2024-11-08 16:04:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:04:22,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:22,309 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:22,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:04:22,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 16:04:22,512 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:22,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1186658199, now seen corresponding path program 1 times [2024-11-08 16:04:22,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:22,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787612009] [2024-11-08 16:04:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:22,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 16:04:22,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787612009] [2024-11-08 16:04:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787612009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:22,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:22,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:04:22,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024322330] [2024-11-08 16:04:22,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:22,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:04:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:22,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:04:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:04:22,740 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:04:22,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:22,846 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2024-11-08 16:04:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:04:22,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 16:04:22,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:22,848 INFO L225 Difference]: With dead ends: 141 [2024-11-08 16:04:22,848 INFO L226 Difference]: Without dead ends: 141 [2024-11-08 16:04:22,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:04:22,849 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 37 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:22,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 190 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-08 16:04:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2024-11-08 16:04:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 119 states have (on average 1.3529411764705883) internal successors, (161), 131 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 16:04:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 165 transitions. [2024-11-08 16:04:22,859 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 165 transitions. Word has length 49 [2024-11-08 16:04:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:22,860 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 165 transitions. [2024-11-08 16:04:22,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:04:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 165 transitions. [2024-11-08 16:04:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 16:04:22,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:22,863 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:22,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:04:22,864 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:22,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1203102339, now seen corresponding path program 1 times [2024-11-08 16:04:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228667740] [2024-11-08 16:04:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:04:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228667740] [2024-11-08 16:04:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228667740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:23,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540432378] [2024-11-08 16:04:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:23,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:23,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:23,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:23,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:04:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:23,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 16:04:23,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:04:23,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:04:23,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540432378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:23,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:23,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-08 16:04:23,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824461877] [2024-11-08 16:04:23,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:23,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 16:04:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 16:04:23,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 16:04:23,765 INFO L87 Difference]: Start difference. First operand 135 states and 165 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 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 16:04:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:24,657 INFO L93 Difference]: Finished difference Result 755 states and 1137 transitions. [2024-11-08 16:04:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:04:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-08 16:04:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:24,666 INFO L225 Difference]: With dead ends: 755 [2024-11-08 16:04:24,667 INFO L226 Difference]: Without dead ends: 755 [2024-11-08 16:04:24,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 16:04:24,668 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 1034 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:24,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 652 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:04:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-08 16:04:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 183. [2024-11-08 16:04:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 167 states have (on average 1.251497005988024) internal successors, (209), 179 states have internal predecessors, (209), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 16:04:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 213 transitions. [2024-11-08 16:04:24,712 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 213 transitions. Word has length 53 [2024-11-08 16:04:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:24,712 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 213 transitions. [2024-11-08 16:04:24,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 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 16:04:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 213 transitions. [2024-11-08 16:04:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 16:04:24,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:24,715 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:24,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 16:04:24,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:24,916 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:24,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1384890595, now seen corresponding path program 2 times [2024-11-08 16:04:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:24,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155313427] [2024-11-08 16:04:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:24,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:04:25,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155313427] [2024-11-08 16:04:25,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155313427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246377564] [2024-11-08 16:04:25,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:04:25,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:25,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:25,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:25,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:04:26,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:04:26,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:26,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 16:04:26,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:04:26,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:04:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246377564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:27,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-08 16:04:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324200] [2024-11-08 16:04:27,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:27,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 16:04:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:27,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 16:04:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 16:04:27,422 INFO L87 Difference]: Start difference. First operand 183 states and 213 transitions. Second operand has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 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 16:04:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:29,586 INFO L93 Difference]: Finished difference Result 1475 states and 2241 transitions. [2024-11-08 16:04:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 16:04:29,587 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 16:04:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:29,593 INFO L225 Difference]: With dead ends: 1475 [2024-11-08 16:04:29,593 INFO L226 Difference]: Without dead ends: 1475 [2024-11-08 16:04:29,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 16:04:29,596 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 2491 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:29,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2583 Valid, 1058 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 16:04:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2024-11-08 16:04:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 279. [2024-11-08 16:04:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 263 states have (on average 1.1596958174904943) internal successors, (305), 275 states have internal predecessors, (305), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 16:04:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 309 transitions. [2024-11-08 16:04:29,637 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 309 transitions. Word has length 101 [2024-11-08 16:04:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:29,638 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 309 transitions. [2024-11-08 16:04:29,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 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 16:04:29,638 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 309 transitions. [2024-11-08 16:04:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-08 16:04:29,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:29,640 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:29,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:04:29,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:29,841 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:29,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1188512349, now seen corresponding path program 3 times [2024-11-08 16:04:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:29,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110966037] [2024-11-08 16:04:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:29,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4189 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:04:32,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:32,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110966037] [2024-11-08 16:04:32,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110966037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:32,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17897747] [2024-11-08 16:04:32,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:04:32,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:32,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:32,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:32,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:04:33,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 16:04:33,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:33,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:04:33,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:33,063 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 16:04:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-08 16:04:33,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:04:33,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17897747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:33,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:04:33,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [49] total 52 [2024-11-08 16:04:33,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186841283] [2024-11-08 16:04:33,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:33,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:04:33,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:04:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 16:04:33,259 INFO L87 Difference]: Start difference. First operand 279 states and 309 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 16:04:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:33,343 INFO L93 Difference]: Finished difference Result 279 states and 308 transitions. [2024-11-08 16:04:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:04:33,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2024-11-08 16:04:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:33,345 INFO L225 Difference]: With dead ends: 279 [2024-11-08 16:04:33,345 INFO L226 Difference]: Without dead ends: 279 [2024-11-08 16:04:33,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 16:04:33,347 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:33,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 195 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-08 16:04:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2024-11-08 16:04:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 261 states have (on average 1.1532567049808429) internal successors, (301), 272 states have internal predecessors, (301), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 16:04:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 305 transitions. [2024-11-08 16:04:33,355 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 305 transitions. Word has length 197 [2024-11-08 16:04:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:33,356 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 305 transitions. [2024-11-08 16:04:33,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 16:04:33,356 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 305 transitions. [2024-11-08 16:04:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-08 16:04:33,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:33,359 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:33,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:04:33,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:33,563 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:04:33,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash -290525108, now seen corresponding path program 1 times [2024-11-08 16:04:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:33,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489923763] [2024-11-08 16:04:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-08 16:04:33,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:33,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489923763] [2024-11-08 16:04:33,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489923763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:33,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036291088] [2024-11-08 16:04:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:33,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:33,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:33,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:04:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:34,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 16:04:34,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:04:35,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:04:38,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036291088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:38,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:38,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 49, 49] total 98 [2024-11-08 16:04:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687324579] [2024-11-08 16:04:38,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:38,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-08 16:04:38,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-08 16:04:39,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4565, Invalid=4941, Unknown=0, NotChecked=0, Total=9506 [2024-11-08 16:04:39,001 INFO L87 Difference]: Start difference. First operand 276 states and 305 transitions. Second operand has 98 states, 98 states have (on average 4.071428571428571) internal successors, (399), 98 states have internal predecessors, (399), 0 states have call successors, (0), 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 16:05:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:05:16,868 INFO L93 Difference]: Finished difference Result 5452 states and 8522 transitions. [2024-11-08 16:05:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-11-08 16:05:16,870 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.071428571428571) internal successors, (399), 98 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2024-11-08 16:05:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:05:16,898 INFO L225 Difference]: With dead ends: 5452 [2024-11-08 16:05:16,898 INFO L226 Difference]: Without dead ends: 5452 [2024-11-08 16:05:16,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19742 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=27360, Invalid=54150, Unknown=0, NotChecked=0, Total=81510 [2024-11-08 16:05:16,915 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 15947 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 1945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16137 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1945 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:05:16,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16137 Valid, 1852 Invalid, 3582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1945 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 16:05:16,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5452 states. [2024-11-08 16:05:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5452 to 509. [2024-11-08 16:05:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 493 states have (on average 1.1176470588235294) internal successors, (551), 504 states have internal predecessors, (551), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:05:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 557 transitions. [2024-11-08 16:05:17,034 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 557 transitions. Word has length 199 [2024-11-08 16:05:17,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:05:17,035 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 557 transitions. [2024-11-08 16:05:17,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.071428571428571) internal successors, (399), 98 states have internal predecessors, (399), 0 states have call successors, (0), 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 16:05:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 557 transitions. [2024-11-08 16:05:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-08 16:05:17,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:05:17,043 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:05:17,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:05:17,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:05:17,244 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:05:17,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:05:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1879703164, now seen corresponding path program 2 times [2024-11-08 16:05:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:05:17,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226586285] [2024-11-08 16:05:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:17,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:05:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17579 trivial. 0 not checked. [2024-11-08 16:05:17,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:05:17,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226586285] [2024-11-08 16:05:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226586285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:05:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857999757] [2024-11-08 16:05:17,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:05:17,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:05:17,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:05:17,944 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:05:17,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:05:18,186 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:05:18,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:05:18,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:05:18,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:05:18,216 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 16:05:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-08 16:05:18,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:05:18,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857999757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:05:18,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:05:18,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 16:05:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682043406] [2024-11-08 16:05:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:05:18,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:05:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:05:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:05:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:05:18,291 INFO L87 Difference]: Start difference. First operand 509 states and 557 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 16:05:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:05:18,375 INFO L93 Difference]: Finished difference Result 515 states and 555 transitions. [2024-11-08 16:05:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:05:18,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2024-11-08 16:05:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:05:18,378 INFO L225 Difference]: With dead ends: 515 [2024-11-08 16:05:18,378 INFO L226 Difference]: Without dead ends: 515 [2024-11-08 16:05:18,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:05:18,379 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 98 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:05:18,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 130 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:05:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-08 16:05:18,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 509. [2024-11-08 16:05:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 493 states have (on average 1.1135902636916837) internal successors, (549), 504 states have internal predecessors, (549), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:05:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 555 transitions. [2024-11-08 16:05:18,390 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 555 transitions. Word has length 395 [2024-11-08 16:05:18,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:05:18,390 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 555 transitions. [2024-11-08 16:05:18,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 16:05:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 555 transitions. [2024-11-08 16:05:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-08 16:05:18,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:05:18,397 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:05:18,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:05:18,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:05:18,602 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:05:18,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:05:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1168343704, now seen corresponding path program 1 times [2024-11-08 16:05:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:05:18,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009426247] [2024-11-08 16:05:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:05:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-08 16:05:19,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:05:19,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009426247] [2024-11-08 16:05:19,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009426247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:05:19,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:05:19,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:05:19,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268870441] [2024-11-08 16:05:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:05:19,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:05:19,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:05:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:05:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:05:19,243 INFO L87 Difference]: Start difference. First operand 509 states and 555 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 16:05:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:05:19,290 INFO L93 Difference]: Finished difference Result 507 states and 542 transitions. [2024-11-08 16:05:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:05:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 399 [2024-11-08 16:05:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:05:19,293 INFO L225 Difference]: With dead ends: 507 [2024-11-08 16:05:19,293 INFO L226 Difference]: Without dead ends: 507 [2024-11-08 16:05:19,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:05:19,295 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 15 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:05:19,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 211 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:05:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-08 16:05:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 503. [2024-11-08 16:05:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 487 states have (on average 1.0944558521560575) internal successors, (533), 498 states have internal predecessors, (533), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:05:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 539 transitions. [2024-11-08 16:05:19,307 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 539 transitions. Word has length 399 [2024-11-08 16:05:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:05:19,308 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 539 transitions. [2024-11-08 16:05:19,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 16:05:19,308 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 539 transitions. [2024-11-08 16:05:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-08 16:05:19,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:05:19,315 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:05:19,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:05:19,315 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:05:19,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:05:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1113815866, now seen corresponding path program 1 times [2024-11-08 16:05:19,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:05:19,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65267505] [2024-11-08 16:05:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:05:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-08 16:05:19,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:05:19,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65267505] [2024-11-08 16:05:19,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65267505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:05:19,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:05:19,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:05:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050692461] [2024-11-08 16:05:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:05:19,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:05:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:05:19,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:05:19,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:05:19,710 INFO L87 Difference]: Start difference. First operand 503 states and 539 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 16:05:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:05:19,718 INFO L93 Difference]: Finished difference Result 422 states and 425 transitions. [2024-11-08 16:05:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:05:19,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2024-11-08 16:05:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:05:19,720 INFO L225 Difference]: With dead ends: 422 [2024-11-08 16:05:19,721 INFO L226 Difference]: Without dead ends: 422 [2024-11-08 16:05:19,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:05:19,721 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:05:19,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:05:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-08 16:05:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-11-08 16:05:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.0119047619047619) internal successors, (425), 421 states have internal predecessors, (425), 0 states have call successors, (0), 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 16:05:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 425 transitions. [2024-11-08 16:05:19,729 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 425 transitions. Word has length 403 [2024-11-08 16:05:19,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:05:19,730 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 425 transitions. [2024-11-08 16:05:19,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 16:05:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 425 transitions. [2024-11-08 16:05:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-08 16:05:19,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:05:19,737 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:05:19,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:05:19,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:05:19,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:05:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1243536402, now seen corresponding path program 1 times [2024-11-08 16:05:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:05:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863694568] [2024-11-08 16:05:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:05:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17587 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:05:28,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:05:28,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863694568] [2024-11-08 16:05:28,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863694568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:05:28,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452758396] [2024-11-08 16:05:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:28,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:05:28,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:05:28,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:05:28,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:05:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:29,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-08 16:05:29,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:05:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17587 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:05:29,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:05:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17587 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:05:42,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452758396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:05:42,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:05:42,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-08 16:05:42,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92601545] [2024-11-08 16:05:42,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:05:42,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-08 16:05:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:05:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-08 16:05:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-08 16:05:42,020 INFO L87 Difference]: Start difference. First operand 422 states and 425 transitions. Second operand has 193 states, 193 states have (on average 4.05699481865285) internal successors, (783), 193 states have internal predecessors, (783), 0 states have call successors, (0), 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 16:05:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:05:44,361 INFO L93 Difference]: Finished difference Result 806 states and 809 transitions. [2024-11-08 16:05:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-08 16:05:44,362 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.05699481865285) internal successors, (783), 193 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 406 [2024-11-08 16:05:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:05:44,365 INFO L225 Difference]: With dead ends: 806 [2024-11-08 16:05:44,366 INFO L226 Difference]: Without dead ends: 806 [2024-11-08 16:05:44,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-08 16:05:44,373 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:05:44,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 181 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:05:44,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-08 16:05:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-11-08 16:05:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.006218905472637) internal successors, (809), 805 states have internal predecessors, (809), 0 states have call successors, (0), 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 16:05:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 809 transitions. [2024-11-08 16:05:44,393 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 809 transitions. Word has length 406 [2024-11-08 16:05:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:05:44,394 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 809 transitions. [2024-11-08 16:05:44,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.05699481865285) internal successors, (783), 193 states have internal predecessors, (783), 0 states have call successors, (0), 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 16:05:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 809 transitions. [2024-11-08 16:05:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2024-11-08 16:05:44,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:05:44,425 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:05:44,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:05:44,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 16:05:44,626 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:05:44,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:05:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1231843090, now seen corresponding path program 2 times [2024-11-08 16:05:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:05:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468543786] [2024-11-08 16:05:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:44,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:05:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 72019 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:06:16,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:16,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468543786] [2024-11-08 16:06:16,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468543786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:06:16,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13127832] [2024-11-08 16:06:16,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:06:16,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:16,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:16,373 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:06:16,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:06:17,136 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:06:17,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:06:17,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-08 16:06:17,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:06:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 72019 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:06:18,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:07:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 72019 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:07:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13127832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:07:06,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:07:06,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2024-11-08 16:07:06,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129856326] [2024-11-08 16:07:06,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:07:06,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-11-08 16:07:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-11-08 16:07:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-08 16:07:06,548 INFO L87 Difference]: Start difference. First operand 806 states and 809 transitions. Second operand has 385 states, 385 states have (on average 4.0285714285714285) internal successors, (1551), 385 states have internal predecessors, (1551), 0 states have call successors, (0), 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 16:07:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:19,207 INFO L93 Difference]: Finished difference Result 1574 states and 1577 transitions. [2024-11-08 16:07:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-08 16:07:19,209 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 4.0285714285714285) internal successors, (1551), 385 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 790 [2024-11-08 16:07:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:19,214 INFO L225 Difference]: With dead ends: 1574 [2024-11-08 16:07:19,214 INFO L226 Difference]: Without dead ends: 1574 [2024-11-08 16:07:19,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1771 GetRequests, 1388 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 62.6s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-08 16:07:19,229 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:19,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 16:07:19,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2024-11-08 16:07:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1574. [2024-11-08 16:07:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1572 states have (on average 1.0031806615776082) internal successors, (1577), 1573 states have internal predecessors, (1577), 0 states have call successors, (0), 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 16:07:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 1577 transitions. [2024-11-08 16:07:19,259 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 1577 transitions. Word has length 790 [2024-11-08 16:07:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:19,260 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 1577 transitions. [2024-11-08 16:07:19,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 4.0285714285714285) internal successors, (1551), 385 states have internal predecessors, (1551), 0 states have call successors, (0), 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 16:07:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 1577 transitions. [2024-11-08 16:07:19,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2024-11-08 16:07:19,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:19,363 INFO L215 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:19,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 16:07:19,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 16:07:19,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:07:19,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1168665326, now seen corresponding path program 3 times [2024-11-08 16:07:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:19,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450607824] [2024-11-08 16:07:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 291475 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:10:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:03,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450607824] [2024-11-08 16:10:03,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450607824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:03,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334122864] [2024-11-08 16:10:03,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:10:03,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:03,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:03,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:03,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:10:03,727 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 16:10:03,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:10:03,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:10:03,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:03,780 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 16:10:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 291475 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 291472 trivial. 0 not checked. [2024-11-08 16:10:04,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:10:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334122864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:10:04,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [385] total 389 [2024-11-08 16:10:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62165987] [2024-11-08 16:10:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:04,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:10:04,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:10:04,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73934, Invalid=76998, Unknown=0, NotChecked=0, Total=150932 [2024-11-08 16:10:04,752 INFO L87 Difference]: Start difference. First operand 1574 states and 1577 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:10:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:04,795 INFO L93 Difference]: Finished difference Result 1573 states and 1575 transitions. [2024-11-08 16:10:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:10:04,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1558 [2024-11-08 16:10:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:04,801 INFO L225 Difference]: With dead ends: 1573 [2024-11-08 16:10:04,802 INFO L226 Difference]: Without dead ends: 1573 [2024-11-08 16:10:04,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1942 GetRequests, 1555 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 61.7s TimeCoverageRelationStatistics Valid=73934, Invalid=76998, Unknown=0, NotChecked=0, Total=150932 [2024-11-08 16:10:04,816 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:04,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:10:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2024-11-08 16:10:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1572. [2024-11-08 16:10:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 1.0019096117122852) internal successors, (1574), 1571 states have internal predecessors, (1574), 0 states have call successors, (0), 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 16:10:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 1574 transitions. [2024-11-08 16:10:04,841 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 1574 transitions. Word has length 1558 [2024-11-08 16:10:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:04,843 INFO L471 AbstractCegarLoop]: Abstraction has 1572 states and 1574 transitions. [2024-11-08 16:10:04,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:10:04,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 1574 transitions. [2024-11-08 16:10:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1572 [2024-11-08 16:10:04,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:04,862 INFO L215 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:04,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 16:10:05,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 16:10:05,064 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:10:05,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1639452696, now seen corresponding path program 1 times [2024-11-08 16:10:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182645200] [2024-11-08 16:10:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 291485 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 16:12:50,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:50,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182645200] [2024-11-08 16:12:50,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182645200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:50,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572460277] [2024-11-08 16:12:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:50,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:50,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:50,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:12:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:52,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 5523 conjuncts, 384 conjuncts are in the unsatisfiable core [2024-11-08 16:12:52,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 291485 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 16:12:54,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:16:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 291485 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 16:16:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572460277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:16:10,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:16:10,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 769 [2024-11-08 16:16:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40122810] [2024-11-08 16:16:10,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:16:10,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2024-11-08 16:16:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:16:10,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2024-11-08 16:16:10,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-11-08 16:16:10,126 INFO L87 Difference]: Start difference. First operand 1572 states and 1574 transitions. Second operand has 769 states, 769 states have (on average 4.019505851755526) internal successors, (3091), 769 states have internal predecessors, (3091), 0 states have call successors, (0), 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 16:17:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:17:05,818 INFO L93 Difference]: Finished difference Result 3108 states and 3110 transitions. [2024-11-08 16:17:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2024-11-08 16:17:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 4.019505851755526) internal successors, (3091), 769 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1571 [2024-11-08 16:17:05,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:17:05,829 INFO L225 Difference]: With dead ends: 3108 [2024-11-08 16:17:05,829 INFO L226 Difference]: Without dead ends: 3108 [2024-11-08 16:17:05,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3525 GetRequests, 2758 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 257.3s TimeCoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-11-08 16:17:05,871 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:17:05,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 225 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3112 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 16:17:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2024-11-08 16:17:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 3108. [2024-11-08 16:17:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 1.0009655616350177) internal successors, (3110), 3107 states have internal predecessors, (3110), 0 states have call successors, (0), 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 16:17:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 3110 transitions. [2024-11-08 16:17:05,968 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 3110 transitions. Word has length 1571 [2024-11-08 16:17:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:17:05,970 INFO L471 AbstractCegarLoop]: Abstraction has 3108 states and 3110 transitions. [2024-11-08 16:17:05,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 4.019505851755526) internal successors, (3091), 769 states have internal predecessors, (3091), 0 states have call successors, (0), 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 16:17:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 3110 transitions. [2024-11-08 16:17:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3108 [2024-11-08 16:17:06,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:17:06,040 INFO L215 NwaCegarLoop]: trace histogram [766, 766, 766, 766, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:17:06,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 16:17:06,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78789dc9-4a77-48e8-916b-3e5a278d6ca6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 16:17:06,244 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-08 16:17:06,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:17:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1036172264, now seen corresponding path program 2 times [2024-11-08 16:17:06,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:17:06,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541141162] [2024-11-08 16:17:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:17:06,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:17:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat