./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3467a31f3cd19e731a18eaf7789079f202f3b29e437ef24ddd0458f09610424d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:06:50,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:06:50,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:06:50,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:06:50,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:06:50,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:06:50,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:06:50,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:06:50,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:06:50,889 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:06:50,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:06:50,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:06:50,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:06:50,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:06:50,892 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:06:50,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:06:50,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:06:50,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:06:50,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:06:50,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:06:50,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:06:50,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:06:50,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:06:50,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:06:50,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:06:50,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:06:50,894 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:06:50,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:06:50,894 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:06:50,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:06:50,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:06:50,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:06:50,897 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB 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 ! call(reach_error())) ) 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 -> 3467a31f3cd19e731a18eaf7789079f202f3b29e437ef24ddd0458f09610424d [2024-11-28 02:06:51,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:06:51,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:06:51,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:06:51,247 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:06:51,248 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:06:51,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-new/count_by_nondet.i [2024-11-28 02:06:54,136 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/data/a824a33a1/459f323a11f3458fbd6a219f9659fc49/FLAG6414d89ae [2024-11-28 02:06:54,449 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:06:54,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/sv-benchmarks/c/loop-new/count_by_nondet.i [2024-11-28 02:06:54,459 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/data/a824a33a1/459f323a11f3458fbd6a219f9659fc49/FLAG6414d89ae [2024-11-28 02:06:54,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/data/a824a33a1/459f323a11f3458fbd6a219f9659fc49 [2024-11-28 02:06:54,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:06:54,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:06:54,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:06:54,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:06:54,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ff0f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54, skipping insertion in model container [2024-11-28 02:06:54,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,522 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:06:54,722 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/sv-benchmarks/c/loop-new/count_by_nondet.i[891,904] [2024-11-28 02:06:54,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,752 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:06:54,768 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/sv-benchmarks/c/loop-new/count_by_nondet.i[891,904] [2024-11-28 02:06:54,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,795 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:06:54,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54 WrapperNode [2024-11-28 02:06:54,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:06:54,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:06:54,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,837 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-28 02:06:54,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:06:54,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:06:54,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:06:54,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,859 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:06:54,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,867 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:06:54,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:06:54,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:06:54,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:06:54,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:54,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:06:54,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:06:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:06:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:06:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:06:54,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:06:55,019 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:06:55,023 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:06:55,149 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-28 02:06:55,149 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:06:55,159 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:06:55,159 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:06:55,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55 BoogieIcfgContainer [2024-11-28 02:06:55,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:06:55,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:06:55,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:06:55,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:06:55,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:54" (1/3) ... [2024-11-28 02:06:55,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de9eda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (2/3) ... [2024-11-28 02:06:55,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de9eda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55" (3/3) ... [2024-11-28 02:06:55,172 INFO L128 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i [2024-11-28 02:06:55,191 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:06:55,192 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG count_by_nondet.i that has 1 procedures, 13 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:06:55,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:06:55,300 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=LoopHeads, 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;@5aa0e345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:06:55,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:06:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:06:55,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,314 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:06:55,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:55,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2024-11-28 02:06:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674238412] [2024-11-28 02:06:55,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:55,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674238412] [2024-11-28 02:06:55,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674238412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:55,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:55,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:06:55,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870932674] [2024-11-28 02:06:55,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:55,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:06:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:55,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:06:55,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:06:55,553 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:55,566 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-11-28 02:06:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:06:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 02:06:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:55,575 INFO L225 Difference]: With dead ends: 21 [2024-11-28 02:06:55,576 INFO L226 Difference]: Without dead ends: 9 [2024-11-28 02:06:55,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:06:55,582 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:55,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-28 02:06:55,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-28 02:06:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-28 02:06:55,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2024-11-28 02:06:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:55,624 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-28 02:06:55,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-28 02:06:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:06:55,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:06:55,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:06:55,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:55,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 889669584, now seen corresponding path program 1 times [2024-11-28 02:06:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680619390] [2024-11-28 02:06:55,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:55,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680619390] [2024-11-28 02:06:55,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680619390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:55,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:55,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:06:55,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209789333] [2024-11-28 02:06:55,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:55,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:55,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:55,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:55,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:55,735 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:55,750 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2024-11-28 02:06:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:55,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 02:06:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:55,751 INFO L225 Difference]: With dead ends: 16 [2024-11-28 02:06:55,751 INFO L226 Difference]: Without dead ends: 12 [2024-11-28 02:06:55,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:55,753 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:55,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-28 02:06:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2024-11-28 02:06:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-11-28 02:06:55,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2024-11-28 02:06:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:55,758 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-11-28 02:06:55,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-11-28 02:06:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:06:55,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:55,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:06:55,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:55,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2136196745, now seen corresponding path program 1 times [2024-11-28 02:06:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439563020] [2024-11-28 02:06:55,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:55,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439563020] [2024-11-28 02:06:55,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439563020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:55,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271832477] [2024-11-28 02:06:55,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:55,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:55,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:55,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:06:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:06:55,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271832477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:56,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:56,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 02:06:56,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022447498] [2024-11-28 02:06:56,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:56,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:56,064 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-28 02:06:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,085 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-11-28 02:06:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:06:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 9 [2024-11-28 02:06:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,086 INFO L225 Difference]: With dead ends: 17 [2024-11-28 02:06:56,086 INFO L226 Difference]: Without dead ends: 13 [2024-11-28 02:06:56,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:56,088 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-28 02:06:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-28 02:06:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2024-11-28 02:06:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-11-28 02:06:56,092 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2024-11-28 02:06:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,092 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-11-28 02:06:56,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-28 02:06:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-11-28 02:06:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:06:56,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,093 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:56,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:06:56,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:56,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1348571760, now seen corresponding path program 2 times [2024-11-28 02:06:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81080259] [2024-11-28 02:06:56,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:06:56,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:06:56,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81080259] [2024-11-28 02:06:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81080259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:56,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412983678] [2024-11-28 02:06:56,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:06:56,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:56,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:56,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:06:56,631 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:06:56,632 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:56,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:06:56,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412983678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:56,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:56,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 02:06:56,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185421601] [2024-11-28 02:06:56,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:06:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:06:56,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:06:56,820 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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) [2024-11-28 02:06:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,871 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-28 02:06:56,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:06:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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 12 [2024-11-28 02:06:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,874 INFO L225 Difference]: With dead ends: 34 [2024-11-28 02:06:56,874 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 02:06:56,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:06:56,876 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 02:06:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-28 02:06:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 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) [2024-11-28 02:06:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2024-11-28 02:06:56,886 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 12 [2024-11-28 02:06:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,886 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2024-11-28 02:06:56,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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) [2024-11-28 02:06:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2024-11-28 02:06:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:06:56,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,888 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:56,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:06:57,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:57,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:57,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1935720368, now seen corresponding path program 3 times [2024-11-28 02:06:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070626765] [2024-11-28 02:06:57,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:06:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:57,135 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:06:57,135 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070626765] [2024-11-28 02:06:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070626765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:57,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125480950] [2024-11-28 02:06:57,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:06:57,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:57,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:57,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:57,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:06:57,509 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:06:57,509 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:57,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:06:57,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:57,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125480950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:57,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:57,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-28 02:06:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718512915] [2024-11-28 02:06:57,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:57,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:06:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:57,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:06:57,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:06:57,878 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:57,942 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-11-28 02:06:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:06:57,943 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 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 24 [2024-11-28 02:06:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:57,944 INFO L225 Difference]: With dead ends: 62 [2024-11-28 02:06:57,945 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 02:06:57,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:06:57,947 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:57,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 63 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 02:06:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-28 02:06:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2024-11-28 02:06:57,954 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 24 [2024-11-28 02:06:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:57,955 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2024-11-28 02:06:57,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2024-11-28 02:06:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:06:57,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:57,956 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:57,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:06:58,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,159 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:58,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash 409041456, now seen corresponding path program 4 times [2024-11-28 02:06:58,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167064119] [2024-11-28 02:06:58,161 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:06:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,200 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:06:58,201 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:58,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167064119] [2024-11-28 02:06:58,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167064119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:58,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083790034] [2024-11-28 02:06:58,808 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:06:58,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:58,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:58,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:06:58,903 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:06:58,903 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:58,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:06:58,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083790034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:59,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:59,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 33 [2024-11-28 02:06:59,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93306862] [2024-11-28 02:06:59,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:06:59,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:06:59,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:06:59,741 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 33 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:59,842 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2024-11-28 02:06:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 02:06:59,843 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 33 states have internal predecessors, (93), 0 states have call successors, (0), 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 48 [2024-11-28 02:06:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:59,845 INFO L225 Difference]: With dead ends: 118 [2024-11-28 02:06:59,845 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 02:06:59,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:06:59,849 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:59,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 111 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 02:06:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2024-11-28 02:06:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0104166666666667) internal successors, (97), 96 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2024-11-28 02:06:59,869 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 48 [2024-11-28 02:06:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:59,870 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2024-11-28 02:06:59,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 33 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2024-11-28 02:06:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:06:59,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:59,874 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:07:00,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:07:00,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:00,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1361866544, now seen corresponding path program 5 times [2024-11-28 02:07:00,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:00,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120370447] [2024-11-28 02:07:00,075 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:00,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:00,186 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-28 02:07:00,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120370447] [2024-11-28 02:07:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120370447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966473907] [2024-11-28 02:07:01,523 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:01,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:01,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:01,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:01,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:07:01,661 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-28 02:07:01,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:01,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:07:01,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:01,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:03,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966473907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:03,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:03,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 66 [2024-11-28 02:07:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385717614] [2024-11-28 02:07:03,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:03,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-28 02:07:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:03,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-28 02:07:03,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2021, Invalid=2269, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 02:07:03,932 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 66 states, 66 states have (on average 2.893939393939394) internal successors, (191), 66 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:04,112 INFO L93 Difference]: Finished difference Result 230 states and 261 transitions. [2024-11-28 02:07:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-28 02:07:04,113 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.893939393939394) internal successors, (191), 66 states have internal predecessors, (191), 0 states have call successors, (0), 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 96 [2024-11-28 02:07:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:04,117 INFO L225 Difference]: With dead ends: 230 [2024-11-28 02:07:04,119 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 02:07:04,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2021, Invalid=2269, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 02:07:04,123 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 93 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:04,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 193 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 02:07:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2024-11-28 02:07:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0052083333333333) internal successors, (193), 192 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2024-11-28 02:07:04,152 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 96 [2024-11-28 02:07:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:04,153 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2024-11-28 02:07:04,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.893939393939394) internal successors, (191), 66 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2024-11-28 02:07:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-28 02:07:04,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:04,159 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:04,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:04,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:07:04,364 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:04,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1407736112, now seen corresponding path program 6 times [2024-11-28 02:07:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601742699] [2024-11-28 02:07:04,365 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:07:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:04,555 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2024-11-28 02:07:04,555 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601742699] [2024-11-28 02:07:09,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601742699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56967297] [2024-11-28 02:07:09,332 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:07:09,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:09,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:09,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:07:09,585 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2024-11-28 02:07:09,585 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:09,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 02:07:09,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:10,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56967297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:16,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:16,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 131 [2024-11-28 02:07:16,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115012563] [2024-11-28 02:07:16,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:16,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-11-28 02:07:16,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:16,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-11-28 02:07:16,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8261, Invalid=8769, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 02:07:16,654 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand has 131 states, 131 states have (on average 2.954198473282443) internal successors, (387), 131 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:17,180 INFO L93 Difference]: Finished difference Result 454 states and 517 transitions. [2024-11-28 02:07:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-11-28 02:07:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.954198473282443) internal successors, (387), 131 states have internal predecessors, (387), 0 states have call successors, (0), 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 192 [2024-11-28 02:07:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:17,183 INFO L225 Difference]: With dead ends: 454 [2024-11-28 02:07:17,184 INFO L226 Difference]: Without dead ends: 387 [2024-11-28 02:07:17,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=8261, Invalid=8769, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 02:07:17,188 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 215 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:17,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 351 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-28 02:07:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2024-11-28 02:07:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.0026041666666667) internal successors, (385), 384 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2024-11-28 02:07:17,226 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 192 [2024-11-28 02:07:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:17,229 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2024-11-28 02:07:17,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.954198473282443) internal successors, (387), 131 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2024-11-28 02:07:17,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-28 02:07:17,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:17,240 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:17,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:17,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:07:17,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:17,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:17,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1308110128, now seen corresponding path program 7 times [2024-11-28 02:07:17,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:17,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919761624] [2024-11-28 02:07:17,445 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:07:17,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 23751 backedges. 0 proven. 23751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:30,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919761624] [2024-11-28 02:07:30,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919761624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:30,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446579879] [2024-11-28 02:07:30,600 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:07:30,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:30,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:30,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:07:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:30,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-28 02:07:30,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 23751 backedges. 0 proven. 23751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:31,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 23751 backedges. 0 proven. 23751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446579879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:54,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:54,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 259 [2024-11-28 02:07:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649164146] [2024-11-28 02:07:54,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:54,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 259 states [2024-11-28 02:07:54,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:54,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 259 interpolants. [2024-11-28 02:07:54,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32901, Invalid=33921, Unknown=0, NotChecked=0, Total=66822 [2024-11-28 02:07:54,546 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand has 259 states, 259 states have (on average 2.976833976833977) internal successors, (771), 259 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:57,832 INFO L93 Difference]: Finished difference Result 902 states and 1029 transitions. [2024-11-28 02:07:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2024-11-28 02:07:57,833 INFO L78 Accepts]: Start accepts. Automaton has has 259 states, 259 states have (on average 2.976833976833977) internal successors, (771), 259 states have internal predecessors, (771), 0 states have call successors, (0), 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 384 [2024-11-28 02:07:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:57,839 INFO L225 Difference]: With dead ends: 902 [2024-11-28 02:07:57,839 INFO L226 Difference]: Without dead ends: 771 [2024-11-28 02:07:57,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=32901, Invalid=33921, Unknown=0, NotChecked=0, Total=66822 [2024-11-28 02:07:57,854 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 549 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:57,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 679 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:07:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-11-28 02:07:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 769. [2024-11-28 02:07:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.0013020833333333) internal successors, (769), 768 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 769 transitions. [2024-11-28 02:07:57,923 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 769 transitions. Word has length 384 [2024-11-28 02:07:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:57,926 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 769 transitions. [2024-11-28 02:07:57,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 259 states, 259 states have (on average 2.976833976833977) internal successors, (771), 259 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 769 transitions. [2024-11-28 02:07:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2024-11-28 02:07:57,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:57,955 INFO L218 NwaCegarLoop]: trace histogram [254, 254, 254, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:57,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:07:58,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:58,157 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:58,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1804085968, now seen corresponding path program 8 times [2024-11-28 02:07:58,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:58,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327382406] [2024-11-28 02:07:58,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:58,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:59,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:59,042 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 96647 backedges. 0 proven. 96647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327382406] [2024-11-28 02:08:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327382406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297047493] [2024-11-28 02:08:50,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:08:50,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:50,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:50,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:08:51,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:08:51,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:51,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 2315 conjuncts, 258 conjuncts are in the unsatisfiable core [2024-11-28 02:08:51,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 96647 backedges. 0 proven. 96647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:53,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 96647 backedges. 0 proven. 96647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:10:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297047493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:10:23,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:10:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [258, 258, 258] total 515 [2024-11-28 02:10:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153299951] [2024-11-28 02:10:23,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 515 states [2024-11-28 02:10:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:23,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 515 interpolants. [2024-11-28 02:10:23,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131333, Invalid=133377, Unknown=0, NotChecked=0, Total=264710 [2024-11-28 02:10:23,116 INFO L87 Difference]: Start difference. First operand 769 states and 769 transitions. Second operand has 515 states, 515 states have (on average 2.9883495145631067) internal successors, (1539), 515 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:11:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:09,885 INFO L93 Difference]: Finished difference Result 1798 states and 2053 transitions. [2024-11-28 02:11:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 513 states. [2024-11-28 02:11:09,887 INFO L78 Accepts]: Start accepts. Automaton has has 515 states, 515 states have (on average 2.9883495145631067) internal successors, (1539), 515 states have internal predecessors, (1539), 0 states have call successors, (0), 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 768 [2024-11-28 02:11:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:09,895 INFO L225 Difference]: With dead ends: 1798 [2024-11-28 02:11:09,896 INFO L226 Difference]: Without dead ends: 1539 [2024-11-28 02:11:09,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1792 GetRequests, 1278 SyntacticMatches, 1 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 117.9s TimeCoverageRelationStatistics Valid=131333, Invalid=133377, Unknown=0, NotChecked=0, Total=264710 [2024-11-28 02:11:09,906 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1399 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:09,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 1321 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:11:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2024-11-28 02:11:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1537. [2024-11-28 02:11:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1536 states have (on average 1.0006510416666667) internal successors, (1537), 1536 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:11:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1537 transitions. [2024-11-28 02:11:09,965 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1537 transitions. Word has length 768 [2024-11-28 02:11:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:09,967 INFO L471 AbstractCegarLoop]: Abstraction has 1537 states and 1537 transitions. [2024-11-28 02:11:09,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 515 states, 515 states have (on average 2.9883495145631067) internal successors, (1539), 515 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:11:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1537 transitions. [2024-11-28 02:11:10,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2024-11-28 02:11:10,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:10,039 INFO L218 NwaCegarLoop]: trace histogram [510, 510, 510, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:10,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:11:10,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:11:10,240 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:10,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1794581808, now seen corresponding path program 9 times [2024-11-28 02:11:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809899679] [2024-11-28 02:11:10,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:11:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:20,954 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 511 check-sat command(s) [2024-11-28 02:11:20,954 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:15:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 389895 backedges. 0 proven. 389895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:15:40,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809899679] [2024-11-28 02:15:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809899679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:15:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580581287] [2024-11-28 02:15:40,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:15:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:40,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:40,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:40,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b0b75a-d9ab-4b4b-bd33-6d7270051c11/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:15:46,084 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 511 check-sat command(s) [2024-11-28 02:15:46,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:15:46,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 4619 conjuncts, 514 conjuncts are in the unsatisfiable core [2024-11-28 02:15:46,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 389895 backedges. 0 proven. 389895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:15:48,862 INFO L312 TraceCheckSpWp]: Computing backward predicates...